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S38815 Stainless Steel vs. SAE-AISI S2 Steel

Both S38815 stainless steel and SAE-AISI S2 steel are iron alloys. They have 64% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (14, 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 S2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
72
Tensile Strength: Ultimate (UTS), MPa 610
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.6
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.1
Embodied Energy, MJ/kg 54
30
Embodied Water, L/kg 140
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
24 to 69
Strength to Weight: Bending, points 21
22 to 44
Thermal Shock Resistance, points 15
23 to 68

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0.4 to 0.55
Chromium (Cr), % 13 to 15
0
Copper (Cu), % 0.75 to 1.5
0 to 0.25
Iron (Fe), % 56.1 to 67
96 to 98.1
Manganese (Mn), % 0 to 2.0
0.3 to 0.5
Molybdenum (Mo), % 0.75 to 1.5
0.3 to 0.6
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
0.9 to 1.2
Sulfur (S), % 0 to 0.020
0 to 0.030
Vanadium (V), % 0
0 to 0.5