PVD Coating for Custom Metal Parts
Thin, hard PVD coatings for custom metal parts, supporting wear resistance, surface durability and decorative metallic finishes.
Thin, Hard PVD Coatings for Precision Metal Components
Physical Vapor Deposition (PVD) forms a thin coating on a prepared metal surface under controlled vacuum conditions. The process is widely used where surface hardness, wear resistance and a refined metallic appearance are required.
Because the deposited film is very thin, PVD is especially suitable for precision components where the underlying geometry, machining quality and surface finish must remain clearly defined.
Thin Functional Film
PVD deposits a comparatively thin surface film, allowing detailed geometry and precision-machined features to remain clearly defined after coating.
Wear & Surface Durability
Selected PVD systems can improve surface hardness and wear behavior on tools, moving components and other metal parts exposed to repeated contact or abrasion.
Metallic Finish Options
PVD coatings can produce gold, bronze, gray, black and other metallic appearances while preserving the underlying texture and character of the prepared surface.
Substrate & Geometry Review
Base material, heat sensitivity, surface condition, masking areas and critical dimensions should be reviewed before the coating system and process route are confirmed.
PVD does not normally hide machining marks, scratches or an uneven substrate finish. A polished surface will remain visually different from a bead-blasted or machined surface after coating, so the required base finish should be defined before PVD processing.
Compare PVD Coatings by Performance — Not Color Alone
PVD coating systems can differ significantly in hardness, friction, film thickness and heat resistance even when the finished parts have a similar metallic appearance.
These characteristics should be reviewed together with the substrate material, contact conditions, operating temperature and intended service life of the component.
Film Thickness
Many hard PVD coatings in our current process range are applied in thin films of approximately 2–4 μm, while selected carbon-based coatings may use thinner films.
Surface Hardness
Representative coating systems in the available range extend from approximately 1800 HV to 3500 HV, depending on coating chemistry and process selection.
Friction Behavior
Coefficient of friction varies by coating system. Low-friction carbon-based coatings can provide substantially lower friction than conventional hard nitride coatings.
Heat Resistance
Different PVD systems provide different temperature capability. High-temperature nitride coatings may be selected for tooling and forming applications exposed to elevated operating temperatures.
Representative PVD Coating Data
Reference values from our current coating capability range. Final specifications should be confirmed for the actual part, substrate and service conditions.
| Coating | Typical Color | Film Thickness | Hardness | Heat Resistance | Friction |
|---|---|---|---|---|---|
| TiN | Gold | 2–3 μm | 2200 HV | 500°C | 0.30 |
| TiCN | Silver Gray | 2–3 μm | 2500 HV | 400°C | 0.20 |
| CrN | Silver White | 2–3 μm | 1800 HV | 600°C | 0.25 |
| TiAlN | Violet Red | 2–3 μm | 2500 HV | 1000°C | 0.30 |
| AlCrN | Black | 3–4 μm | 2800 HV | >1000°C | 0.35 |
| DLC | Black | 0.5–1.5 μm | 2500 HV | 300°C | 0.10 |
Higher Hardness Is Not Automatically the Better Coating
Coating selection should balance hardness, friction, heat resistance, substrate compatibility and the actual wear mechanism. A lower-friction coating may be more appropriate for a sliding component, while a high-temperature hard coating may be better suited to cutting or forming tools.
From Machined Metal Part to Finished PVD-Coated Component
PVD coating should be coordinated with the machining, surface preparation and inspection requirements of the component. The base finish, masking areas and functional surfaces should be confirmed before the part enters the vacuum coating process.
Part Manufacturing
Components are machined, turned, milled, formed or otherwise produced according to the drawing, material specification and dimensional requirements.
Surface Preparation & Masking
The required machined, polished, brushed or blasted base surface is prepared, while threads, fits and other specified areas can be masked where coating is not required.
Vacuum PVD Deposition
Cleaned parts are fixtured inside the vacuum coating system and processed with the selected PVD coating according to the required coating chemistry and process specification.
Inspection & Final Handling
Finished parts are reviewed for coating condition, appearance, critical surfaces and agreed acceptance requirements before controlled handling, packing and shipment.
Base Surface Condition Directly Affects the Final PVD Finish
PVD is a thin-film coating and does not normally conceal scratches, machining marks or an inconsistent base texture. Polished, brushed, blasted and machined surfaces will retain different visual characteristics after coating, so the required substrate finish should be confirmed before PVD processing.
Key Details to Review Before PVD Coating
PVD coating should be specified together with the substrate material, base surface condition, geometry and functional requirements of the component.
Early review helps coordinate machining, polishing or blasting, masking, coating selection and inspection before the part enters the vacuum coating process.
Substrate Material
Confirm the base material and any heat-treatment condition before coating. Substrate properties can influence coating selection, adhesion and process temperature limits.
Base Surface Finish
Polished, brushed, bead-blasted and machined surfaces produce different final appearances because the thin PVD film generally follows the underlying texture.
Critical Dimensions & Masking
Threads, fits, bores, sealing surfaces and other critical interfaces should be identified before coating so masking and dimensional allowance can be reviewed.
Geometry & Coverage
Deep recesses, narrow cavities and shielded areas may require additional review because PVD deposition coverage can be influenced by component geometry and fixturing orientation.
Heat Sensitivity
The coating process should be compatible with the substrate, hardness condition and any previous heat treatment so the required properties of the component are maintained.
Inspection Requirements
Coating appearance, critical surfaces, specified thickness and other project-specific acceptance requirements should be agreed before repeat production.
Define the Base Finish and Coated Areas Before Production
Where appearance or dimensional control is important, identify the required polished, brushed, blasted or machined base finish together with coated and uncoated surfaces on the drawing or approved process document.
Typical Metal Parts for PVD Coating
PVD coatings are used on precision metal parts where the surface must provide wear resistance, hardness, friction control, heat resistance or a durable metallic appearance.
Coating selection should follow the actual wear mechanism, service temperature, substrate material and functional requirements of the component.
Cutting Tools
Drills, milling tools, taps and other cutting components where hardness, wear resistance and elevated-temperature performance may be required.
Molds & Dies
Injection molds, forming dies and tooling components requiring improved wear behavior, release performance or longer service life.
Sliding & Mechanical Parts
Pins, guides, inserts and other contacting components where friction behavior and surface durability influence mechanical performance.
Custom Machined Components
CNC-machined parts requiring selective hard coating while retaining specified dimensions, surface details and uncoated interfaces.
Precision Hardware
Fasteners, fixtures and other metal hardware where the coating is selected for wear resistance, appearance or functional surface improvement.
Decorative Metal Components
Metal components requiring gold, bronze, gray, black or other metallic appearances while preserving a thin and well-defined surface finish.
Need PVD Coating for a Custom Metal Part?
Send us your drawing, base material and required surface performance. We can review the manufacturing route, base finish, coating option, masking areas and inspection requirements before quotation.
Custom metal manufacturing, surface preparation and PVD coating can be coordinated within one sourcing workflow.
What Helps Us Review Your Project
Drawing or CAD File PDF, STEP or other available part drawing with dimensions, tolerances and critical surfaces.
Base Material Tool steel, stainless steel, alloy steel or other specified substrate material and heat-treatment condition.
Coating Requirement TiN, TiCN, CrN, TiAlN, AlCrN, AlTiN, DLC or another required coating specification where known.
Required Performance Wear resistance, hardness, low friction, heat resistance, metallic appearance or other functional requirement.
Base Finish & Masking Identify polished, brushed, blasted or machined surfaces together with any areas that must remain uncoated.
Quantity & Service Conditions Include production quantity, contact conditions, operating temperature and other relevant application information where available.