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SAE-AISI M7 Steel vs. EN 1.7380 Steel

Both SAE-AISI M7 steel and EN 1.7380 steel are iron alloys. They have 86% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M7 steel and the bottom bar is EN 1.7380 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 77
74
Tensile Strength: Ultimate (UTS), MPa 760 to 2210
540 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1560
1470
Melting Onset (Solidus), °C 1510
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 28
39
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 18
3.8
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 8.9
1.8
Embodied Energy, MJ/kg 130
23
Embodied Water, L/kg 100
59

Common Calculations

PREN (Pitting Resistance) 35
5.6
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 76
19 to 20
Strength to Weight: Bending, points 23 to 47
19
Thermal Diffusivity, mm2/s 7.8
11
Thermal Shock Resistance, points 24 to 69
15 to 16

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.080 to 0.14
Chromium (Cr), % 3.5 to 4.0
2.0 to 2.5
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 79.8 to 83.8
94.6 to 96.6
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.8
Molybdenum (Mo), % 8.2 to 9.2
0.9 to 1.1
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.55
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.8 to 2.3
0