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SAE-AISI S7 Steel vs. N08135 Stainless Steel

Both SAE-AISI S7 steel and N08135 stainless steel are iron alloys. They have 42% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S7 steel and the bottom bar is N08135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 670 to 2030
570

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
39
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.3
6.8
Embodied Energy, MJ/kg 31
94
Embodied Water, L/kg 65
220

Common Calculations

PREN (Pitting Resistance) 8.4
38
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 72
19
Strength to Weight: Bending, points 22 to 46
19
Thermal Shock Resistance, points 22 to 66
13

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.030
Chromium (Cr), % 3.0 to 3.5
20.5 to 23.5
Copper (Cu), % 0 to 0.25
0 to 0.7
Iron (Fe), % 91.6 to 94.9
30.2 to 42.3
Manganese (Mn), % 0.2 to 0.9
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
4.0 to 5.0
Nickel (Ni), % 0
33 to 38
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0.2 to 0.8
Vanadium (V), % 0 to 0.3
0