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Tool Steel
Tool Steel A4
Principle Design Features
This alloy is one of the Cold Work, Medium Air Hardening type tool steels.
Known Forms
Disc
Drill Rod
Flat Bar
Plate
Precision Ground Bar
Ring
Round Bar
Sheet
Square Bar
Additional Data
Specifications
A681 (A-4),T30104Chemical Elements
| Carbon | 0.95 - 1.05 |
| Chromium | 0.9 - 2.2 |
| Iron | Balance |
| Manganese | 1.8 - 2.2 |
| Molybdenum | 0.9 - 1.4 |
| Phosphorus | 0.03 max |
| Silicon | 0.5 max |
| Sulphur | 0.03 max |
Physical Properties
Density: 0.283lb/in³