Surface finish
Phosphating for CNC & Molded Parts
Phosphating converts the steel surface into a phosphate layer. It is a great base for paint and gives light corrosion resistance.
- Excellent paint base and lubrication.
- Adds mild rust protection.
Surface finish
Phosphating converts the steel surface into a phosphate layer. It is a great base for paint and gives light corrosion resistance.
What it is
Phosphating is a chemical conversion coating. Steel or zinc parts are dipped in a phosphate solution. A crystalline phosphate layer grows on the surface. It improves paint adhesion, adds lubrication for forming, and gives light corrosion resistance.
How it works
Clean & degrease
We remove oil and soil from the surface.
Phosphate bath
The part soaks and a phosphate crystal layer grows.
Rinse
We rinse and sometimes apply a seal or oil.
Dry & inspect
The part is dried and checked.
Why choose it
Top coating bonds far better.
Slows rust in indoor use.
Manganese phosphate aids sliding and forming.
Crystalline layer carries oil.
Typical specs
| Specification | Typical range / value | Notes |
|---|---|---|
| Types | Iron, zinc, manganese phosphate | |
| Coating weight | 1 – 15 g/m² by type | |
| Color | Grey, black, or olive | |
| Base materials | Steel, galvanized steel, zinc |
Best applications
Paint base for car panels.
Lubricated, corrosion-resistant bolts.
Primed white goods frames.
Wear and lube surfaces.
Materials
We apply Phosphating to the materials below. Not sure if your material qualifies? Our engineers will confirm it for free.
Our solution
We phosphate steel parts as a paint base or wear/lube layer. We help choose iron, zinc, or manganese phosphate for your need.
Design tips
Zinc for paint, manganese for wear.
Crystals can build in holes.
Bare phosphate is best indoors.
FAQ