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Carpenter S7 Alloy Tool Steel (AISI S7)

Category	Metal , Ferrous Metal , Tool Steel , Air-Hardening Steel , Hot Work Steel
Manufacturer	Carpenter Technology Corporation (Cartech)
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Carpenter S7 Alloy Tool Steel (AISI S7).pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Carpenter S7 is a general purpose air hardening tool steel having high impact and shock resistance. It has good resistance to softening at moderately high temperatures. This combination of properties makes it suitable for many hot-work and cold-work applications. It is available as a DeCarb-Free product. DCF bars have been cold finished in the mill, eliminating the need for bar bark removal. Both Carpenter S7 and Bearcat, a trademark of Bethlehem Steel Corp., have the same AISI tool steel designation . . . S7.Information provided by Carpenter Technology Corporation.

Physical Properties	Metric	English	Comments
Specific Gravity	7.83 g/cc	7.83 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	37 - 40	37 - 40	Tempered at 1200°F
	59 - 61	59 - 61	As hardened
Tensile Strength, Ultimate	2025 MPa	293700 psi	when tempered at 400°F
Tensile Strength, Yield	1520 MPa @Strain 0.200 %	220000 psi @Strain 0.200 %	when tempered at 400°F
Elongation at Break	10 %	10 %	when tempered at 400°F
Reduction of Area	28 %	28 %	when tempered at 400°F

Thermal Properties	Metric	English	Comments
CTE, linear	12.59 µm/m-°C @Temperature 25.0 - 200 °C	6.994 µin/in-°F @Temperature 77.0 - 392 °F
	13.33 µm/m-°C @Temperature 25.0 - 400 °C	7.406 µin/in-°F @Temperature 77.0 - 752 °F
	14.27 µm/m-°C @Temperature 25.0 - 700 °C	7.928 µin/in-°F @Temperature 77.0 - 1290 °F
Transformation Temperature	785 °C	1450 °F	Ac<sub>1</sub>

Component Elements Properties	Metric	English	Comments
Carbon, C	0.50 %	0.50 %
Chromium, Cr	3.25 %	3.25 %
Iron, Fe	93.85 %	93.85 %	As Balance
Manganese, Mn	0.70 %	0.70 %
Molybdenum, Mo	1.4 %	1.4 %
Silicon, Si	0.30 %	0.30 %

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