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SAE-AISI H42 Steel vs. S30815 Stainless Steel

Both SAE-AISI H42 steel and S30815 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H42 steel and the bottom bar is S30815 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 700 to 1980
680

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1620
1400
Melting Onset (Solidus), °C 1570
1360
Specific Heat Capacity, J/kg-K 440
490
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
17
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.8
3.3
Embodied Energy, MJ/kg 130
47
Embodied Water, L/kg 98
160

Common Calculations

PREN (Pitting Resistance) 31
24
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 23 to 65
25
Strength to Weight: Bending, points 21 to 42
22
Thermal Diffusivity, mm2/s 6.5
4.0
Thermal Shock Resistance, points 20 to 57
15

Alloy Composition

Carbon (C), % 0.55 to 0.7
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 3.8 to 4.5
20 to 22
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.3 to 83.8
62.8 to 68.4
Manganese (Mn), % 0.15 to 0.4
0 to 0.8
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
10 to 12
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0
1.4 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0