15CrMo steel chemical composition and heat treatment process

15CrMo steel is a low alloy steel, its chemical composition mainly includes:

- Carbon (C) : 0.12-0.18%
Silicon (Si) : 0.17-0.37%
- Manganese (Mn) : 0.40-0.70%
- Phosphorus (P) : ≤0.035%
- Sulfur (S) : ≤0.035%
- Chromium (Cr) : 0.80-1.10%
Molybdenum (Mo) : 0.40-0.55%

15CrMo steel is usually quenched and tempered during heat treatment. The following is a common heat treatment process:

1. Quenching: Heating to the right temperature (usually 860-900 degrees Celsius) and then rapidly cooling to room temperature or lower temperature. This allows 15CrMo steel to achieve high hardness and strength.

2. Tempering: After quenching, the 15CrMo steel is reheated to a lower temperature (usually 540-680 degrees Celsius) and kept for a period of time, and then cooled again. The purpose of tempering is to reduce the hardness of steel and improve its toughness and machinability.

Specific heat treatment process parameters and steps may vary according to specific applications and requirements, so in practical applications, it is best to perform specific operations according to relevant standards, specifications or process guidance.

Pre: Performance characteristics and application fields of 15CrMo steel

Next: 15CrMo steel mechanical properties