SAE-AISI S7 (T41907) Shock-Resisting Steel
Tool Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength670 to 2030MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0.45 to 0.55%
CR
3.0 to 3.5%
MO
1.3 to 1.8%
MN
0.2 to 0.9%
SI
0.2 to 1.0%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
0 to 0.3%
FE
91.6 to 94.9%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Poisson's Ratio
0.29
Shear Modulus
74 GPa
Tensile Strength: Ultimate (UTS)
670 to 2030 MPa
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
40 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
22 to 66 points
Electrical
Electrical Conductivity: Equal Volume
7.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.0 % IACS
Calculated
PREN (Pitting Resistance)
8.4
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
24 to 72 points
Strength to Weight: Bending
22 to 46 points
Environmental
Base Metal Price
5.0 % relative
Embodied Carbon
2.3 kg CO 2 /kg material
Embodied Energy
31 MJ/kg
Embodied Energy
31 MJ/kg 13 x 10 3 BTU/lb
Embodied Water
65 L/kg
Embodied Water
65 L/kg 7.8 gal/lb
Registered Designations & Aliases
SAE-AISI S7 (T41907) Shock-Resisting SteelT41907
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy Tool Steels, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016