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EN 1.6957 Steel vs. SAE-AISI T4 Steel

Both EN 1.6957 steel and SAE-AISI T4 steel are iron alloys. They have 72% 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 EN 1.6957 steel and the bottom bar is SAE-AISI T4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 930
800 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1460
1810
Melting Onset (Solidus), °C 1420
1750
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 47
21
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
55
Density, g/cm3 7.9
9.4
Embodied Carbon, kg CO2/kg material 2.1
8.5
Embodied Energy, MJ/kg 29
130
Embodied Water, L/kg 60
120

Common Calculations

PREN (Pitting Resistance) 2.7
37
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 33
24 to 64
Strength to Weight: Bending, points 27
20 to 39
Thermal Diffusivity, mm2/s 13
5.4
Thermal Shock Resistance, points 27
24 to 64

Alloy Composition

Carbon (C), % 0.22 to 0.32
0.7 to 0.8
Chromium (Cr), % 1.2 to 1.8
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 92.7 to 94.7
66.3 to 72.3
Manganese (Mn), % 0.15 to 0.4
0.1 to 0.4
Molybdenum (Mo), % 0.25 to 0.45
0.4 to 1.0
Nickel (Ni), % 3.4 to 4.0
0 to 0.3
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.15
0.2 to 0.4
Sulfur (S), % 0 to 0.0070
0 to 0.030
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0.050 to 0.15
0.8 to 1.2