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SAE-AISI M2 Steel vs. EN 1.4958 Stainless Steel

Both SAE-AISI M2 steel and EN 1.4958 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
630

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1570
1350
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
30
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.8
5.3
Embodied Energy, MJ/kg 130
75
Embodied Water, L/kg 98
200

Common Calculations

PREN (Pitting Resistance) 31
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25 to 71
22
Strength to Weight: Bending, points 22 to 44
20
Thermal Diffusivity, mm2/s 5.9
3.2
Thermal Shock Resistance, points 27 to 76
15

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.5
Carbon (C), % 0.78 to 1.1
0.030 to 0.080
Chromium (Cr), % 3.8 to 4.5
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 78.5 to 83.4
41.1 to 50.6
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.45
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.2 to 0.5
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0