Materials overview
Its surface oxide film is hard and blocks corrosion and wear together. It is the base material for coating, electrode and surface treatment parts.
Its hardness is among the highest of any metal, and it forms a dense oxide film on the surface that blocks corrosion.
It is the element that gives stainless steel its corrosion resistance, and it is widely used as a surface treatment and hard coating material.
Key Property Values
These are the values engineers check first at the design stage. Actual delivery specifications follow the per-lot test report.
| Item | Value | Description |
|---|---|---|
| Melting point | 1907 °C | Mid-to-high temperature range |
| Density g/cm³ | 7.19 | Close to steel |
| Thermal conductivity W/m·K | 93 | Upper-middle |
| Thermal expansion µm/m·K | 4.9 | Relatively low |
| Corrosion environment | Air | Self-protecting through an oxide film |
| Supply grade | 1 | Pure Cr 99.9% |
Figures are representative values. The thermal expansion coefficient is taken from published literature and needs review before release.
Key Advantages
How these figures translate into advantages in actual processes.
Among the highest hardness there is
The base material for wear-resistant coatings and hard chrome plating.
A self-protecting oxide film
A thin, dense Cr₂O₃ film protects the material underneath. It is the basis of stainless steel's corrosion resistance.
High-temperature oxidation resistance
The film holds at high temperature, which makes it an essential alloying element in heat-resistant alloys.
Supply Forms · Machining Options
| Form | Specification |
|---|---|
| Wire · Rod stock | On request |
| Sheet · Plate | On request |
| Rod · Bar | On request |
| Custom machined parts | To drawing |
Custom Machining Capability
- Cutting to drawing dimensions · CNC / MCT machining
- Wire EDM · laser machining · welded assemblies
- Forming (bending · deep drawing) and surface treatment
- The same tolerances from a single prototype to full production
