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S31730 Stainless Steel vs. ASTM A732 Cast Steel

Both S31730 stainless steel and ASTM A732 cast steel are iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
140 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
4.0 to 25
Fatigue Strength, MPa 170
230 to 750
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72 to 73
Tensile Strength: Ultimate (UTS), MPa 540
460 to 1470
Tensile Strength: Yield (Proof), MPa 200
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 290
250 to 260
Maximum Temperature: Mechanical, °C 990
400 to 430
Melting Completion (Liquidus), °C 1430
1440 to 1460
Melting Onset (Solidus), °C 1390
1400 to 1420
Specific Heat Capacity, J/kg-K 470
470 to 480
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
2.0 to 3.8
Density, g/cm3 8.0
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 4.6
1.4 to 1.7
Embodied Energy, MJ/kg 63
19 to 24
Embodied Water, L/kg 180
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 99
260 to 4770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
16 to 52
Strength to Weight: Bending, points 18
17 to 37
Thermal Shock Resistance, points 12
14 to 43