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SAE-AISI T8 Steel vs. EN 1.6957 Steel

Both SAE-AISI T8 steel and EN 1.6957 steel are iron alloys. They have 75% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
930

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1730
1460
Melting Onset (Solidus), °C 1670
1420
Specific Heat Capacity, J/kg-K 420
470
Thermal Conductivity, W/m-K 18
47
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
5.0
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 10
2.1
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 120
60

Common Calculations

PREN (Pitting Resistance) 30
2.7
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 66
33
Strength to Weight: Bending, points 21 to 41
27
Thermal Diffusivity, mm2/s 4.8
13
Thermal Shock Resistance, points 24 to 66
27

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.22 to 0.32
Chromium (Cr), % 3.8 to 4.5
1.2 to 1.8
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
92.7 to 94.7
Manganese (Mn), % 0.2 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 0.4 to 1.0
0.25 to 0.45
Nickel (Ni), % 0 to 0.3
3.4 to 4.0
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.2 to 0.4
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.0070
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0.050 to 0.15