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SAE-AISI M2 Steel vs. EN 1.4901 Stainless Steel

Both SAE-AISI M2 steel and EN 1.4901 stainless steel are iron alloys. They have 88% 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 M2 steel and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
740

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1610
1490
Melting Onset (Solidus), °C 1570
1450
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 22
26
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
11
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.8
2.8
Embodied Energy, MJ/kg 130
40
Embodied Water, L/kg 98
89

Common Calculations

PREN (Pitting Resistance) 31
14
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25 to 71
26
Strength to Weight: Bending, points 22 to 44
23
Thermal Diffusivity, mm2/s 5.9
6.9
Thermal Shock Resistance, points 27 to 76
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.78 to 1.1
0.070 to 0.13
Chromium (Cr), % 3.8 to 4.5
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 78.5 to 83.4
85.8 to 89.1
Manganese (Mn), % 0.15 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 4.5 to 5.5
0.3 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 5.5 to 6.8
1.5 to 2.0
Vanadium (V), % 1.8 to 2.2
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010