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SAE-AISI H12 Steel vs. N08135 Stainless Steel

Both SAE-AISI H12 steel and N08135 stainless steel are iron alloys. They have 44% 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 H12 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 75
80
Tensile Strength: Ultimate (UTS), MPa 690 to 1850
570

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1440
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
39
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 2.9
6.8
Embodied Energy, MJ/kg 41
94
Embodied Water, L/kg 76
220

Common Calculations

PREN (Pitting Resistance) 12
38
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 65
19
Strength to Weight: Bending, points 22 to 42
19
Thermal Shock Resistance, points 22 to 60
13

Alloy Composition

Carbon (C), % 0.3 to 0.4
0 to 0.030
Chromium (Cr), % 4.8 to 5.5
20.5 to 23.5
Copper (Cu), % 0 to 0.25
0 to 0.7
Iron (Fe), % 87.8 to 91.7
30.2 to 42.3
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
33 to 38
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.8 to 1.2
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.0 to 1.7
0.2 to 0.8
Vanadium (V), % 0 to 0.5
0