60Si2Mn spring steel is widely used silicon manganese spring steel, strength, elasticity and hardenability is slightly higher than 55Si2Mn. 60Si2Mn spring steel is suitable for the production of flat spring or coil spring with line diameter below 30mm in the railway vehicle and automobile tractor industry, and it is also suitable for the production of heat-resistant spring in non-corrosive medium with working temperature below 250 ℃, as well as large and important coil spring under alternating load and working under high stress and automobile shock absorption system.
Heat treatment correlation
Annealed 60SI2MN spring steel
Slowly heat to 740-770 ° C, and keep enough time to allow the steel to heat fully, and then slowly cool in the furnace. The maximum hardness of 60SI2MN tool steel is 250HB (Brinell hardness).
Quenching treatment of 60SI2MN spring steel
60SI2MN steel should be uniformly heated to 830-860°C (1526-1580°F) until fully heated. Every 25 mm chisel section should be provided for about 30 min, and then the steel should be quenched in oil immediately. Hardness 61 minutes.
Tempering of 60SI2MN spring steel
The tempering temperature of 60SI2MN steel is 480-530°C, and it is fully soaked at the selected temperature for at least one hour per 25 mm total thickness. Hardness value HRC at different temperatures after tempering :150°C-61HRc, 200°C-60HRC, 300°C-56HRC, 400°C-51HRC, 500°C-43HRC, 550°C-38HRC, 600°C-33HRC, 650°C-29HRC.
60Si2Mn spring steel is suitable for the production of flat spring or coil spring with line diameter below 30mm in the railway vehicle and automobile tractor industry, and it is also suitable for the production of heat-resistant spring in non-corrosive medium with working temperature below 250 ℃, as well as large and important coil spring under alternating load and working under high stress and automobile shock absorption system.
