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AISI S7 Forged Tool Steel Bar

AISI S7 Forged Tool Steel Bar

S7 is an air or oil hardening shock resisting (cold work) tool steel offering a unique combination of toughness and wear resistance. This material is primarily used in applications that require resistance to shock and/or impact.

AISI S7 Forged Tool Steel Bar

S7 is an air or oil hardening shock resisting (cold work) tool steel offering a unique combination of toughness and wear resistance. This material is primarily used in applications that require resistance to shock and/or impact.

Chemical Composition

Standard Grade Chemical composition (%)
    C Si Mn Cr Mo V P    S
AISI S7 0.45-0.55 0.20-1.00 0.20-0.90 3.00-3.50 1.30-1.80 ≤0.35 ≤0.030 ≤0.030

Available Size

Forged steel round bar: dia100mm-dia1500mm

Forged flat bar: thickness20mm-400mm, width80mm-1000mm

Forged steel block: 100mm*100mm-1000mm*1000mm

Available Heat Treatment

Annealing/Normalizing/Hardening/Tempering/Quenching

Hardness after annealing ≤HBS: 229

Hardness after cold drawn ≤HBS: 255

Preheating temperature:677°C

Quenching temperature: (1)salt bath furnace: 941 °C (2)controlled atmosphere furnace: 954 °C

Soaking temperature: 5-15min

Cooling medium: Air cooling

Tempering temperature: 204 °C

Hardness after tempering≥HRC: 56

Characteristics

1. Good resistance to softening at moderately high temperatures

2. Good deformation resistance

3. S7 tool steel can be used successfully for both cold and hot work

Application

Blanking Dies, Brake Dies, Chisels, Die Casting Dies, Forming Dies, Gripper Dies, cold and warm header dies, shears, compression dies, hobbed dies, high hardness plastic molds, zinc die casting dies, etc.

Delivery Condition

Forged, black surface/ turned surface with customers’ required heat treatment

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