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Tool Steel
Tool Steel P21
Principle Design Features
This alloy is one of the common Mold steels available in the market.
Known Forms
Disc
Drill Rod
Flat Bar
Plate
Precision Ground Bar
Ring
Round Bar
Sheet
Square Bar
Additional Data
Specifications
A681,T51621Chemical Elements
| Aluminum | 1.05 - 1.25 |
| Carbon | 0.18 - 0.22 |
| Chromium | 0.2 - 0.3 |
| Iron | Balance |
| Manganese | 0.2 - 0.4 |
| Nickel | 4 - 4.25 |
| Phosphorus | 0.03 max |
| Silicon | 0.2 - 0.4 |
| Sulphur | 0.03 max |
| Vanadium | 0.15 - 0.25 |
Physical Properties
Density: 0.283lb/in³