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S31655 Stainless Steel vs. Austenitic Grey Cast Iron

Both S31655 stainless steel and austenitic grey cast iron are iron alloys. There are 21 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 S31655 stainless steel and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
110 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.28
0.29 to 0.3
Shear Modulus, GPa 78
69 to 72
Tensile Strength: Ultimate (UTS), MPa 710
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 290
280 to 350
Melting Completion (Liquidus), °C 1430
1340 to 1400
Melting Onset (Solidus), °C 1380
1290 to 1350
Specific Heat Capacity, J/kg-K 480
470 to 490
Thermal Expansion, µm/m-K 16
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 17
14 to 24
Density, g/cm3 7.8
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 3.3
3.1 to 4.7
Embodied Energy, MJ/kg 46
43 to 65
Embodied Water, L/kg 160
93 to 120

Common Calculations

PREN (Pitting Resistance) 27
2.0 to 5.0
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23 to 25
Strength to Weight: Axial, points 25
5.3 to 8.2
Strength to Weight: Bending, points 23
7.9 to 11
Thermal Shock Resistance, points 16
4.5 to 6.5