Will surface finishing change my part dimensions?

Yes. Some finishes add material, while others remove or alter the surface. For precision parts, final dimensions should be reviewed together with the required surface finish tolerance.

Should coating thickness be included in my CAD dimensions?

For tight-tolerance features, yes. Critical bores, fits, threads, and sealing surfaces should be defined with the final finished condition in mind.

Can threads and precision holes be masked before anodizing or powder coating?

Yes. Threads, bores, electrical contacts, and mating surfaces can often be masked or plugged to prevent unwanted coating build.

Can TigerHubs match Pantone or RAL colors?

Pantone or RAL references can be specified for applicable painting and powder coating projects. Final color availability should be confirmed before production.

Why can anodized aluminum show slight color variation between batches?

Anodizing color can vary because of alloy composition, surface condition, part geometry, anodizing parameters, and dye batch. For cosmetic parts, batch consistency requirements should be defined in advance.

What finish is best for aluminum CNC parts?

Common aluminum surface finishes include anodizing, hard anodizing, bead blasting, chemical conversion coating, powder coating, and polishing. The best option depends on appearance, wear, corrosion protection, and dimensional requirements.

What surface finish is best for stainless steel?

Common stainless steel surface finishes include passivation, electropolishing, brushing, polishing, and bead blasting. Selection depends on whether the priority is cleanliness, appearance, corrosion resistance, or surface smoothness.

Can prototype and production parts maintain the same finish?

Yes, when the same finish specification, material, surface preparation, color standard, and process controls are maintained. For cosmetic parts, approving a reference sample before production is recommended.

Can different surface finishes be applied to different areas of one part?

Yes. Different areas can often be selectively finished or masked, depending on geometry and process compatibility. These zones should be clearly identified on the engineering drawing.

What information should I include on my engineering drawing?

Include the surface finish type, coating thickness, color, gloss, texture, masking areas, critical dimensions, threads, and cosmetic surfaces where applicable. Clear drawing requirements help reduce production ambiguity.

Can surface finishing be included with part manufacturing?

Yes. TigerHubs can coordinate CNC machining surface finishing, sheet metal finishing, die casting finishing, sand casting finishing, metal 3D printing finishing, and injection molding surface finishes within one production workflow.

Surface Treatment Services

TigerHubs provides integrated surface finishing services for custom metal and plastic parts, supporting projects from rapid prototypes to repeat production.

Our custom surface finishing capabilities can be coordinated with CNC machining, sheet metal fabrication, die casting, sand casting, metal 3D printing, and injection molding—helping you move from part manufacturing to the final finished component through one managed workflow.

20+ Surface Finish Options
Metal & Plastic Parts
Prototype to Production

Start Your Surface Treatment Project

Surface Finishing Options We Offer

Choose from mechanical finishing, anodizing, conversion treatments, plating, protective coatings, and molded-part textures for custom metal and plastic parts. TigerHubs coordinates surface finishing services with CNC machining, sheet metal fabrication, die casting, sand casting, metal 3D printing, and injection molding, helping you receive parts with the required final appearance and surface condition without managing multiple production suppliers.

Handling Your Parts

Name	Describe	Best For	Applicable Materials	Compatible Services	Typical Finish
As Machined	A clean machined surface that retains the natural tool pattern from CNC milling or turning, with no additional cosmetic finishing operation.	Precision mechanical parts, internal components, prototypes, fixtures	Aluminum, stainless steel, steel, brass, copper, titanium, engineering plastics	CNC Machining	Approximately Ra 3.2 μm standard machining reference; finer finishes available by process control
Deburring	Removes sharp edges, loose burrs, and machining residue while preserving the primary geometry of the component.	Machined edges, drilled holes, laser-cut parts, stamped components	Aluminum, steel, stainless steel, brass, copper and other machinable metals	CNC Machining, Sheet Metal Fabrication, Die Casting	Edge break or burr removal according to drawing requirements
Bead Blasting	Uses fine media to create a uniform matte or satin surface while reducing visible machining marks and minor surface variation.	Housings, covers, consumer-facing CNC parts, aluminum enclosures	Aluminum, stainless steel, steel, titanium and selected alloys	CNC Machining, Die Casting, Metal 3D Printing, Sheet Metal Fabrication	Uniform matte to satin appearance; no defined coating thickness
Sand Blasting	Uses abrasive media to clean and texture metal surfaces, producing a stronger surface profile than fine cosmetic bead blasting.	Castings, fabricated frames, large metal components, coating preparation	Steel, stainless steel, aluminum, cast iron and other metals	Sand Casting, Die Casting, Sheet Metal Fabrication	Textured matte surface; surface profile depends on abrasive media and pressure
Tumbling	Bulk finishing smooths edges and surfaces by processing parts together with abrasive media, making it efficient for batches of small components.	Small CNC parts, stamped parts, hardware, brackets and mass-produced metal components	Aluminum, steel, stainless steel, brass, copper and selected alloys	CNC Machining, Sheet Metal Fabrication, Die Casting	Deburred, softened and more uniform surface; final texture depends on media
Brushed Finish	Produces directional linear grain using abrasive belts or brushes for a controlled technical or decorative appearance.	Panels, faceplates, covers, appliances, electronic housings	Stainless steel, aluminum, brass and selected metals	CNC Machining, Sheet Metal Fabrication	Directional satin grain; grit and brushing direction can be drawing-specified
Polishing	Progressively refines the surface to reduce visible scratches and create a smoother, brighter appearance.	Cosmetic components, stainless steel parts, decorative hardware and exposed metal surfaces	Stainless steel, aluminum, brass, copper and selected alloys	CNC Machining, Sheet Metal Fabrication, Die Casting, Metal 3D Printing	Satin to high-gloss; roughness depends on polishing grade and substrate condition
Type II Anodizing	Creates a controlled oxide layer on aluminum and can be supplied in natural or dyed colors for finished CNC and fabricated components.	Aluminum housings, brackets, covers, electronic components and cosmetic parts	Aluminum and suitable aluminum alloys	CNC Machining, Sheet Metal Fabrication, Die Casting	Approximately 5–25 μm, depending on alloy, color and specification.
Type III Hard Anodizing	Produces a thicker, denser anodic oxide layer than standard anodizing for engineering components that require a more substantial functional surface.	Sliding components, machine parts, fixtures, automation components and wear surfaces	Suitable aluminum alloys	CNC Machining, Die Casting	Common engineering range approximately 25–75 μm, with around 40–60 μm frequently specified for hard-anodized engineering parts.
Chromate Conversion Coating / Alodine	A thin chemical conversion treatment for aluminum that changes the surface chemistry without creating the heavy build associated with thicker coatings.	Aluminum components requiring minimal dimensional change, electrical enclosures and pre-paint surfaces	Aluminum and aluminum alloys	CNC Machining, Sheet Metal Fabrication, Die Casting	Thin conversion layer with minimal dimensional build; clear to yellow/gold appearance depending on process
Black Oxide	Forms a very thin black conversion layer on ferrous metals, producing a dark technical finish with minimal dimensional change	Fasteners, tools, fixtures, gears and precision steel components	Carbon steel, alloy steel and compatible ferrous materials	CNC Machining, Sheet Metal Fabrication	Generally sub-micron to around 1 μm for conventional black oxide systems
Passivation	Chemically cleans stainless steel surfaces and supports formation of the naturally protective chromium-rich passive layer without applying a conventional coating.	Stainless steel machined parts, fittings, laboratory components and precision hardware	Stainless steel	CNC Machining, Sheet Metal Fabrication, Metal 3D Printing	No meaningful coating build; passive surface layer is only nanometers thick, so dimensional change is normally negligible.
Zinc Plating	Deposits a thin zinc layer onto steel components to provide a controlled metallic surface suitable for a broad range of industrial parts	Fasteners, brackets, stamped parts, steel hardware and mechanical components	Carbon steel and compatible ferrous alloys	CNC Machining, Sheet Metal Fabrication, Metal Stamping	Common engineering specifications typically use thin micron-level deposits; required thickness should be defined on the drawing according to service environment
Nickel Plating	Electrolytically deposits nickel onto a conductive substrate to create a bright or technical metallic surface	Hardware, decorative components, electrical parts and metal housings	Steel, stainless steel, copper, brass and suitably prepared aluminum	CNC Machining, Sheet Metal Fabrication, Die Casting	Bright to satin metallic nickel; thickness selected according to the required plating specification
Electroless Nickel Plating	Chemically deposits a nickel-phosphorus layer without electrical current, allowing comparatively uniform coverage across complex features and recesses	Precision machined components, bores, valve parts, complex housings and engineering components	Steel, stainless steel, aluminum, copper alloys and selected metals with proper pretreatment	CNC Machining, Die Casting	Common functional coatings are approximately 5–50 μm, with roughly 12–25 μm frequently used for general engineering applications
Chrome Plating	Deposits chromium onto metal parts for either decorative appearance or engineering applications; the required process must be defined according to the intended use	Shafts, tooling, wear components, decorative hardware and selected precision surfaces	Steel and other properly prepared metallic substrates	CNC Machining, Die Casting	Engineering hard chrome can range from approximately 10–250 μm for many functional applications, while decorative chrome is substantially thinner
Powder Coating	Applies electrostatically charged powder followed by thermal curing to form a continuous colored coating on metal components	Enclosures, frames, cabinets, brackets, panels and fabricated products	Steel, stainless steel, aluminum and other heat-compatible conductive substrates	Sheet Metal Fabrication, Die Casting, Sand Casting, CNC Machining	Approximately 60–120 μm for many general industrial applications
Liquid Painting	Applies liquid coating systems to achieve specified colors and appearances across metal and selected plastic components	Housings, castings, covers, prototypes, branded components and large fabricated parts	Metals and selected plastics with suitable preparation and primer systems	CNC Machining, Sheet Metal Fabrication, Die Casting, Sand Casting, Injection Molding	Matte, satin or gloss; dry-film thickness depends on primer, paint chemistry and coating system
E-Coating / Electrophoretic Coating	Uses an electrically driven immersion process to deposit a comparatively uniform coating over conductive metal components, including complex geometries	Automotive-style components, brackets, frames, stamped parts and production metal assemblies	Steel and other conductive metals with appropriate pretreatment	Sheet Metal Fabrication, Die Casting, CNC Machining	Thin, uniform protective film; final thickness depends on coating chemistry and specified performance
PTFE / Teflon Coating	Applies a fluoropolymer-based coating to create a smooth functional surface for components requiring controlled surface behavior	Fixtures, sliding components, release surfaces and industrial processing parts	Steel, stainless steel, aluminum and compatible metal substrates	CNC Machining, Sheet Metal Fabrication	Industrial PTFE coating systems commonly fall around 25–75 μm, depending on the coating system and application
SPI Mold Finish	Creates a defined mold-cavity surface using polishing or abrasive preparation so the required appearance is transferred directly to injection-molded plastic parts	Consumer housings, optical-style surfaces, polished plastic covers and production molded components	Injection-moldable thermoplastics; final appearance depends on resin	Injection Molding	SPI grades from high-gloss polished surfaces through progressively matte textured finishes
VDI Mold Texture	Creates standardized textured mold surfaces that transfer repeatable matte or grain patterns directly to molded plastic components	Handles, electronics housings, industrial controls, automotive-style interiors and textured plastic covers	Injection-moldable thermoplastics	Injection Molding	Defined VDI texture grade selected according to required surface appearance and molded-part geometry
Vapor Smoothing	Uses a controlled vapor process to soften and reflow the outer surface of compatible polymer parts, reducing visible layer lines and creating a more continuous finish	Additive-manufactured polymer housings, prototypes, ducts and appearance-sensitive 3D printed parts	Selected thermoplastics compatible with the smoothing chemistry	Plastic 3D Printing	Smooth satin to glossy surface; no universal coating thickness because the existing polymer surface is reflowed rather than coated

One Manufacturing Partner From Part Production to Final Finish

TigerHubs connects part manufacturing and surface finishing within one coordinated production workflow. Instead of managing separate machining, casting, molding, fabrication, and finishing suppliers, you can move from raw part production to a finished component through one manufacturing partner. Our finishing support is integrated with CNC machining, sheet metal fabrication, die casting, sand casting, metal 3D printing, and injection molding, helping reduce supplier handoffs, simplify communication, and keep production requirements aligned from the first operation through final finishing.

CNC Machining Surface Finishing

Machining → Deburring → Blasting → Anodizing / Plating / Passivation / Polishing Complete CNC machining surface finishing within the same production workflow. Machined aluminum, stainless steel, steel, brass, and other metal parts can move directly from machining and deburring into the specified finishing process.

Best for: precision housings, brackets, mechanical components, fixtures, covers, and appearance-critical CNC parts.

Sheet Metal Finishing

Laser Cutting → Bending → Welding → Powder Coating / Painting / Plating TigerHubs combines fabrication operations with sheet metal finishing, allowing formed and welded components to proceed into protective or cosmetic finishing without requiring a separate finishing supplier.

Best for: enclosures, chassis, panels, cabinets, frames, brackets, and fabricated assemblies.

Die Casting Surface Finishing

Casting → Trimming → CNC Machining → Blasting → Anodizing / Powder Coating / Plating Our die casting surface finishing workflow connects casting, secondary machining, and finishing so critical machined areas and finished exterior surfaces can be planned as part of the same production route.

Best for: aluminum and zinc housings, structural parts, covers, heat-management components, and production-volume cast components.

Sand Casting Surface Finishing

Casting → CNC Machining → Grinding → Blasting → Painting / Powder Coating Large and complex cast parts can move from casting and machining into coordinated sand casting finishing operations, reducing the need to transfer heavy or oversized components between multiple suppliers.

Best for: large housings, machine bases, industrial components, pump bodies, structural castings, and low- to medium-volume metal parts.

Metal 3D Printing Finishing

Metal Printing → Heat Treatment → Support Removal → Blasting → Polishing / CNC Machining TigerHubs integrates metal 3D printing finishing with post-processing operations required to turn printed components into functional end-use parts. Secondary machining and surface finishing can be planned according to the part's final application.

Best for: complex lightweight parts, internal-channel components, functional prototypes, aerospace-style geometries, and low-volume production parts.

Injection Molding Surface Finish

Tool Texture → SPI / VDI Finish → Molding → Painting / Coating / Printing For plastic components, the required injection molding surface finish can be considered from mold preparation through final appearance treatment. Mold texture and secondary cosmetic processes can therefore be coordinated with the molded part specification.

Best for: consumer housings, electronic enclosures, control panels, handles, covers, and appearance-sensitive plastic components.

Our Surface Treatment Specifications

Surface finishing can change more than the appearance of a part. Depending on the process, a finish may add material, remove material, alter surface roughness, or change the effective size of precision features. For parts with tight fits, threaded features, sealing surfaces, bearing seats, or mating interfaces, surface finish thickness and dimensional impact should be considered before manufacturing begins.

Upload Your Drawing for Finish Review

Surface Finish	Typical Engineering Reference	What to Consider
As Machined	Ra 3.2 μm	Surface roughness depends on machining parameters, tool condition, and geometry
Fine / Micro Finish	Ra 0.4 μm	Final dimensions should account for grinding, polishing, or precision finishing allowance
Type II Anodizing	5–25 μm	Anodic layer affects finished dimensions and should be considered on precision bores and mating features
Type III Hard Anodizing	25–100 μm	Particularly important for close fits, sliding surfaces, threads, and precision diameters
Powder Coating	60–120 μm	Thick coating build can affect holes, threads, edges, mating surfaces, and assembly clearance
E-Coating	15–35 μm	Relatively uniform coverage should still be included in dimensional planning for precision features
Zinc Plating	5–25 μm	Plating thickness should be controlled on threads, fasteners, bores, and fitted components
Electroless Nickel Plating	5–50 μm	Relatively uniform deposition makes coating thickness especially important on precision geometries
Chromate Conversion Coating	Sub-micron to a few μm	Suitable where very small dimensional change is preferred
Liquid Painting	25–50 μm	Primer, number of coats, paint chemistry, and appearance specification affect total dry-film thickness

Ready to Finish Your Parts?

Upload your CAD files, drawings, and surface finish requirements to TigerHubs for a combined manufacturing and finishing review.Our team can evaluate your part geometry, material, manufacturing process, finish specification, critical dimensions, masking areas, cosmetic requirements, and production quantity before quoting.

Surface Finishing Options We Offer

Name

Describe

Best For

Applicable Materials

Compatible Services

Typical Finish

As Machined

A clean machined surface that retains the natural tool pattern from CNC milling or turning, with no additional cosmetic finishing operation.

Precision mechanical parts, internal components, prototypes, fixtures

Aluminum, stainless steel, steel, brass, copper, titanium, engineering plastics

CNC Machining

Approximately Ra 3.2 μm standard machining reference; finer finishes available by process control

Deburring

Removes sharp edges, loose burrs, and machining residue while preserving the primary geometry of the component.

Machined edges, drilled holes, laser-cut parts, stamped components

Aluminum, steel, stainless steel, brass, copper and other machinable metals

CNC Machining, Sheet Metal Fabrication, Die Casting

Edge break or burr removal according to drawing requirements

Bead Blasting

Uses fine media to create a uniform matte or satin surface while reducing visible machining marks and minor surface variation.

Housings, covers, consumer-facing CNC parts, aluminum enclosures

Aluminum, stainless steel, steel, titanium and selected alloys

CNC Machining, Die Casting, Metal 3D Printing, Sheet Metal Fabrication

Uniform matte to satin appearance; no defined coating thickness

Sand Blasting

Uses abrasive media to clean and texture metal surfaces, producing a stronger surface profile than fine cosmetic bead blasting.

Castings, fabricated frames, large metal components, coating preparation

Steel, stainless steel, aluminum, cast iron and other metals

Sand Casting, Die Casting, Sheet Metal Fabrication

Textured matte surface; surface profile depends on abrasive media and pressure

Tumbling

Bulk finishing smooths edges and surfaces by processing parts together with abrasive media, making it efficient for batches of small components.

Small CNC parts, stamped parts, hardware, brackets and mass-produced metal components

Aluminum, steel, stainless steel, brass, copper and selected alloys

CNC Machining, Sheet Metal Fabrication, Die Casting

Deburred, softened and more uniform surface; final texture depends on media

Brushed Finish

Produces directional linear grain using abrasive belts or brushes for a controlled technical or decorative appearance.

Panels, faceplates, covers, appliances, electronic housings

Stainless steel, aluminum, brass and selected metals

CNC Machining, Sheet Metal Fabrication

Directional satin grain; grit and brushing direction can be drawing-specified

Polishing

Progressively refines the surface to reduce visible scratches and create a smoother, brighter appearance.

Cosmetic components, stainless steel parts, decorative hardware and exposed metal surfaces

Stainless steel, aluminum, brass, copper and selected alloys

CNC Machining, Sheet Metal Fabrication, Die Casting, Metal 3D Printing

Satin to high-gloss; roughness depends on polishing grade and substrate condition

Type II Anodizing

Creates a controlled oxide layer on aluminum and can be supplied in natural or dyed colors for finished CNC and fabricated components.

Aluminum housings, brackets, covers, electronic components and cosmetic parts

Aluminum and suitable aluminum alloys

CNC Machining, Sheet Metal Fabrication, Die Casting

Approximately 5–25 μm, depending on alloy, color and specification.

Type III Hard Anodizing

Produces a thicker, denser anodic oxide layer than standard anodizing for engineering components that require a more substantial functional surface.

Sliding components, machine parts, fixtures, automation components and wear surfaces

Suitable aluminum alloys

CNC Machining, Die Casting

Common engineering range approximately 25–75 μm, with around 40–60 μm frequently specified for hard-anodized engineering parts.

Chromate Conversion Coating / Alodine

A thin chemical conversion treatment for aluminum that changes the surface chemistry without creating the heavy build associated with thicker coatings.

Aluminum components requiring minimal dimensional change, electrical enclosures and pre-paint surfaces

Aluminum and aluminum alloys

CNC Machining, Sheet Metal Fabrication, Die Casting

Thin conversion layer with minimal dimensional build; clear to yellow/gold appearance depending on process

Black Oxide

Forms a very thin black conversion layer on ferrous metals, producing a dark technical finish with minimal dimensional change

Fasteners, tools, fixtures, gears and precision steel components

Carbon steel, alloy steel and compatible ferrous materials

CNC Machining, Sheet Metal Fabrication

Generally sub-micron to around 1 μm for conventional black oxide systems

Passivation

Chemically cleans stainless steel surfaces and supports formation of the naturally protective chromium-rich passive layer without applying a conventional coating.

Stainless steel machined parts, fittings, laboratory components and precision hardware

Stainless steel

CNC Machining, Sheet Metal Fabrication, Metal 3D Printing

No meaningful coating build; passive surface layer is only nanometers thick, so dimensional change is normally negligible.

Zinc Plating

Deposits a thin zinc layer onto steel components to provide a controlled metallic surface suitable for a broad range of industrial parts

Fasteners, brackets, stamped parts, steel hardware and mechanical components

Carbon steel and compatible ferrous alloys

CNC Machining, Sheet Metal Fabrication, Metal Stamping

Common engineering specifications typically use thin micron-level deposits; required thickness should be defined on the drawing according to service environment

Nickel Plating

Electrolytically deposits nickel onto a conductive substrate to create a bright or technical metallic surface

Hardware, decorative components, electrical parts and metal housings

Steel, stainless steel, copper, brass and suitably prepared aluminum

CNC Machining, Sheet Metal Fabrication, Die Casting

Bright to satin metallic nickel; thickness selected according to the required plating specification

Electroless Nickel Plating

Chemically deposits a nickel-phosphorus layer without electrical current, allowing comparatively uniform coverage across complex features and recesses

Precision machined components, bores, valve parts, complex housings and engineering components

Steel, stainless steel, aluminum, copper alloys and selected metals with proper pretreatment

CNC Machining, Die Casting

Common functional coatings are approximately 5–50 μm, with roughly 12–25 μm frequently used for general engineering applications

Chrome Plating

Deposits chromium onto metal parts for either decorative appearance or engineering applications; the required process must be defined according to the intended use

Shafts, tooling, wear components, decorative hardware and selected precision surfaces

Steel and other properly prepared metallic substrates

CNC Machining, Die Casting

Engineering hard chrome can range from approximately 10–250 μm for many functional applications, while decorative chrome is substantially thinner

Powder Coating

Applies electrostatically charged powder followed by thermal curing to form a continuous colored coating on metal components

Enclosures, frames, cabinets, brackets, panels and fabricated products

Steel, stainless steel, aluminum and other heat-compatible conductive substrates

Sheet Metal Fabrication, Die Casting, Sand Casting, CNC Machining

Approximately 60–120 μm for many general industrial applications

Liquid Painting

Applies liquid coating systems to achieve specified colors and appearances across metal and selected plastic components

Housings, castings, covers, prototypes, branded components and large fabricated parts

Metals and selected plastics with suitable preparation and primer systems

CNC Machining, Sheet Metal Fabrication, Die Casting, Sand Casting, Injection Molding

Matte, satin or gloss; dry-film thickness depends on primer, paint chemistry and coating system

E-Coating / Electrophoretic Coating

Uses an electrically driven immersion process to deposit a comparatively uniform coating over conductive metal components, including complex geometries

Automotive-style components, brackets, frames, stamped parts and production metal assemblies

Steel and other conductive metals with appropriate pretreatment

Sheet Metal Fabrication, Die Casting, CNC Machining

Thin, uniform protective film; final thickness depends on coating chemistry and specified performance

PTFE / Teflon Coating

Applies a fluoropolymer-based coating to create a smooth functional surface for components requiring controlled surface behavior

Fixtures, sliding components, release surfaces and industrial processing parts

Steel, stainless steel, aluminum and compatible metal substrates

CNC Machining, Sheet Metal Fabrication

Industrial PTFE coating systems commonly fall around 25–75 μm, depending on the coating system and application

SPI Mold Finish

Creates a defined mold-cavity surface using polishing or abrasive preparation so the required appearance is transferred directly to injection-molded plastic parts

Consumer housings, optical-style surfaces, polished plastic covers and production molded components

Injection-moldable thermoplastics; final appearance depends on resin

Injection Molding

SPI grades from high-gloss polished surfaces through progressively matte textured finishes

VDI Mold Texture

Creates standardized textured mold surfaces that transfer repeatable matte or grain patterns directly to molded plastic components

Handles, electronics housings, industrial controls, automotive-style interiors and textured plastic covers

Injection-moldable thermoplastics

Injection Molding

Defined VDI texture grade selected according to required surface appearance and molded-part geometry

Vapor Smoothing

Uses a controlled vapor process to soften and reflow the outer surface of compatible polymer parts, reducing visible layer lines and creating a more continuous finish

Additive-manufactured polymer housings, prototypes, ducts and appearance-sensitive 3D printed parts

Selected thermoplastics compatible with the smoothing chemistry

Plastic 3D Printing

Smooth satin to glossy surface; no universal coating thickness because the existing polymer surface is reflowed rather than coated

One Manufacturing Partner From Part Production to Final Finish

Our Surface Treatment Specifications

Surface Finish

Typical Engineering Reference

What to Consider

As Machined

Ra 3.2 μm

Surface roughness depends on machining parameters, tool condition, and geometry

Fine / Micro Finish

Ra 0.4 μm

Final dimensions should account for grinding, polishing, or precision finishing allowance

Type II Anodizing

5–25 μm

Anodic layer affects finished dimensions and should be considered on precision bores and mating features

Type III Hard Anodizing

25–100 μm

Particularly important for close fits, sliding surfaces, threads, and precision diameters

Powder Coating

60–120 μm

Thick coating build can affect holes, threads, edges, mating surfaces, and assembly clearance

E-Coating

15–35 μm

Relatively uniform coverage should still be included in dimensional planning for precision features

Zinc Plating

5–25 μm

Plating thickness should be controlled on threads, fasteners, bores, and fitted components

Electroless Nickel Plating

5–50 μm

Relatively uniform deposition makes coating thickness especially important on precision geometries

Chromate Conversion Coating

Sub-micron to a few μm

Suitable where very small dimensional change is preferred

Liquid Painting

25–50 μm

Primer, number of coats, paint chemistry, and appearance specification affect total dry-film thickness

Ready to Finish Your Parts?

Surface Treatment Services

Surface Finishing Options We Offer

One Manufacturing Partner From Part Production to Final Finish

CNC Machining Surface Finishing

Sheet Metal Finishing

Die Casting Surface Finishing

Sand Casting Surface Finishing

Metal 3D Printing Finishing

Injection Molding Surface Finish

Our Surface Treatment Specifications

Frequently Asked Questions

Ready to Finish Your Parts?

Surface Finishing Options We Offer

One Manufacturing Partner From Part Production to Final Finish

CNC Machining Surface Finishing

Sheet Metal Finishing

Die Casting Surface Finishing

Sand Casting Surface Finishing

Metal 3D Printing Finishing

Injection Molding Surface Finish

Our Surface Treatment Specifications

Frequently Asked Questions

Ready to Finish Your Parts?