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S31730 Stainless Steel vs. SAE-AISI H43 Steel

Both S31730 stainless steel and SAE-AISI H43 steel are iron alloys. They have 65% 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 S31730 stainless steel and the bottom bar is SAE-AISI H43 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540
710 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1430
1530
Melting Onset (Solidus), °C 1390
1480
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
14
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.6
8.2
Embodied Energy, MJ/kg 63
120
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 30
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
25 to 75
Strength to Weight: Bending, points 18
22 to 46
Thermal Shock Resistance, points 12
21 to 62

Alloy Composition

Carbon (C), % 0 to 0.030
0.5 to 0.65
Chromium (Cr), % 17 to 19
3.8 to 4.5
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
83.2 to 85.9
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 3.0 to 4.0
7.8 to 8.5
Nickel (Ni), % 15 to 16.5
0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.45
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2