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EN 1.4901 Stainless Steel vs. SAE-AISI M2 Steel

Both EN 1.4901 stainless steel and SAE-AISI M2 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 EN 1.4901 stainless steel and the bottom bar is SAE-AISI M2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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