Aisi A4 Cold Rolled Tool Steel Bar High Pressure Steel Pipe For Producing
AISI A4 Steel is a high quality, High carbon, high manganese, chrome, molybdenum alloy Cold work tool steel. Oil Quenched & Tempered Hardenss is 28-34 HRc. AISI A4 steel Annealing delivery hardenss less than 250HB.
Chemical composition
| C(％) | 0.95～1.05 | Si(％) | 0.10～0.50 | Mn(％) | 1.80～2.20 | P(％) | ≤0.030 |
| S(％) | ≤0.040 | Cr(％) | 0.90～1.20 | Mo (％) | 0.90～1.40 | V(％) | / |
The mechanical properties of A4 tool steels
| Bulk modulus (typical for steels) | Machinability (based on carbon tool steel) | Shear modulus | Poisson’s ratio | Elastic modulus) | Thermal expansion | |
| GPa | GPa | GPa | 20-100℃ | |||
| 140 | 65% | 78 | 0.27-0.30 | 190-210 | 10.7 x 10-6/ºC | |
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