S7 Tool Steel
High impact toughness, good hardenability, strong resistance to thermal softening, and small quenching deformation – suitable for stamping tools, shearing blades, punches, hammering tools, and mold parts that require shock resistance and wear resistance.At FCS Tool Steel, we offer S7 Tool Steel in multiple supply conditions:
Supply Condition:Annealed,Machined
Available Forms:Round bars,Plates / Flat bars,Custom-cut pieces
Processing Services:Sawing,Rough machining,Custom heat treatment.
Standard Size Range (Availability varies by stock):
- Diameter (Round bar): Φ10 mm – Φ65 mm / Φ70 mm – Φ400 mm / Φ500 mm / Φ600 mm / Φ700 mm.
- Plate/Flat Thickness: 8 – 45 mm / 50 – 500 mm.
- Width: 50 – 1000 mm / 50 – 1500 mm.
- Forged Discs: Up to Ø1200 mm.
Forming Methods:Hot Rolled,Hot Forged.
Surface Finish Options:Black,Grinded,Sandblasted,Turned/Machined/Milled/Bright.
What is S7 Tool Steel?
S7 is an impact-resistant air-quenched tool steel, renowned for its excellent impact toughness. It is suitable for cold and warm working tools and die parts that are subject to repeated impacts, drops or alternating loads.
S7 Tool Steel:Product Specification
S7 Tool Steel:Chemical Composition
S7 Tool Steel:International and grade comparison
S7 Tool Steel:Surface Condition
S7 Tool Steel:Milled plate
S7 Tool Steel:Turned and Peeled Round Steel
S7 Tool Steel:Sandblasted Round Bar
Comparison with common tool steels
- S7 VS D2 (High carbon and high chromium) : D2 is more wear-resistant but has higher brittleness; S7 is more impact-resistant and has better crack resistance.
- S7 VS A2 (universal for air quenching) : A2 has better hardness and wear resistance, while S7 is more reliable under impact conditions.
- S7 VS H13 (Hot Working) : H13 is specifically designed for high-temperature hot working, while S7 can be used in some hot conditions but the temperature must not be too high (approximately ≤ 538 °C/1000 °F).
Quick Questions and Answers (FAQ)
Q: Is S7 suitable for high-temperature hot working dies?
A: S7 can be used in certain temperature-constrained thermal applications (short-term operating temperature ≤≈538 °C /1000 °F); If working at high temperatures for a long time, H-series hot work steel should be given priority.Q: Is S7 prone to deformation after quenching?
A: S7 can be quenched by air or oil. Compared with many steel grades, the quenching deformation is smaller, which is convenient for heat treatment of precision parts.
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