How high can you heat treat 4140?
How high can you heat treat 4140? Tempering. AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has a lower tempering temperature. CAN 4140 steel be heat treated? For 4140 steel, the recommended heat […]