With help of consistent efforts and dedication of our experts, we have been able to manufacture and supply a wide range of 40NiCrMo84 Alloy Steel to our esteemed clients. It is a medium carbon, low alloy steel. This alloy steel is utilized in all metal cutting tools for roughing and finishing including twist drills, thread dies, reamers, broaches, and woodworking tools. Apart from this, 40NiCrMo84 Alloy Steel is highly admired for its great cutting edge retention and high toughness. Also, it is obtainable at very budget-friendly prices to access a large number of people.
Technical Specification
Grade | C | Mn | P | S | Si | Ni | Cr | Mo |
4340 | 0.38-0.43 | 0.60-0.80 | 0.035 max | 0.040 max | 0.15-0.35 | 1.65-2.00 | 0.70-0.90 | 0.20-0.30 |
Physical Properties
Thermal Conductivity at °C | W / (m*K) |
20 | 40.5 |
350 | 32.5 |
700 | 25.5 |
Heat Treatment
Soft Annealing °C | 650-700 |
Cooling | Slowly |
Hardness HB | max. 280 |
Stress-relief Annealing °C | 630-650 |
Cooling | Furnace |
1st Pre-Heating °C | up to approx. 400 in an air-circulating furnace |
2nd and 3rd | 780 and 1000 |
Hardening °C | 1190-1230 |
Quenching | at least 520°C Oil, Air |
Tempering °C | at least twice 530-560 |
Hardness after Temperature HRC | 64-66 |
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