HARDNESS : Generally material in this grade is stocked in fully annealed form with a hardness of 200 – 220 HV / VPN. Also as per customer’s request different hardness range such as half-hard or full hard can be achieved.

ANNEALING : Heat slowly to 820-840°C, soak well. Cool slowly in the furnace.

HARDENING : Heat slowly to 650-700°C and thoroughly soak. Continue to heat the steel to the final hardening temperature of 830-860°C and allow the component to be heated through. Quench in oil.

TEMPERING: Temper the 50CRV4 spring steel component immediately after quenching whilst tools are still hand warm. Re-heat to the tempering temperature then soak for one hour per 25 millimetre of total thickness (2 hours minimum) Cool in air. For most applications tempering of this grade will be between 400-600°C.

HEAT TREATMENT: Heat treatment temperatures, including rate of heating, cooling and soaking times etc. will vary due to factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of 50CRV4.

FORGING: Preheat the steel carefully, then raise temperature to 1050°C for forging. Do not forge below 840°C. After forging 50CRV4 spring steel cool slowly, preferably in a furnace.

WELDING: We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding 50CRV4 chrome vanadium spring steel.

GROUND FLAT STOCK: Precision ground flat stock / gauge plate can be produced using 50CRV4 steel. Subject to size suitability and availability of raw material pieces can be produced in approximately 2 to 3 weeks. Standard and non-standard sizes are available.