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SAE-AISI H43 Steel vs. S30815 Stainless Steel

Both SAE-AISI H43 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 H43 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 710 to 2140
680

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1530
1400
Melting Onset (Solidus), °C 1480
1360
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 30
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 14
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 8.2
3.3
Embodied Energy, MJ/kg 120
47
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 31
24
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 75
25
Strength to Weight: Bending, points 22 to 46
22
Thermal Diffusivity, mm2/s 8.3
4.0
Thermal Shock Resistance, points 21 to 62
15

Alloy Composition

Carbon (C), % 0.5 to 0.65
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 3.8 to 4.5
20 to 22
Iron (Fe), % 83.2 to 85.9
62.8 to 68.4
Manganese (Mn), % 0.15 to 0.4
0 to 0.8
Molybdenum (Mo), % 7.8 to 8.5
0
Nickel (Ni), % 0
10 to 12
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
1.4 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 1.8 to 2.2
0