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S38815 Stainless Steel vs. SAE-AISI M2 Steel

Both S38815 stainless steel and SAE-AISI M2 steel are iron alloys. They have 68% of their average alloy composition in common. There are 20 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 S38815 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 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 610
760 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Melting Completion (Liquidus), °C 1360
1610
Melting Onset (Solidus), °C 1310
1570
Specific Heat Capacity, J/kg-K 500
440
Thermal Expansion, µm/m-K 15
10

Otherwise Unclassified Properties

Base Metal Price, % relative 19
24
Density, g/cm3 7.5
8.4
Embodied Carbon, kg CO2/kg material 3.8
8.8
Embodied Energy, MJ/kg 54
130
Embodied Water, L/kg 140
98

Common Calculations

PREN (Pitting Resistance) 18
31
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 22
25 to 71
Strength to Weight: Bending, points 21
22 to 44
Thermal Shock Resistance, points 15
27 to 76

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0.78 to 1.1
Chromium (Cr), % 13 to 15
3.8 to 4.5
Copper (Cu), % 0.75 to 1.5
0 to 0.25
Iron (Fe), % 56.1 to 67
78.5 to 83.4
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0.75 to 1.5
4.5 to 5.5
Nickel (Ni), % 13 to 17
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 5.5 to 6.5
0.2 to 0.45
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2