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S21800 Stainless Steel vs. ASTM A148 Cast Steel

Both S21800 stainless steel and ASTM A148 cast steel are iron alloys. There are 27 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 S21800 stainless steel and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190 to 390
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
5.7 to 25
Fatigue Strength, MPa 330
280 to 670
Poisson's Ratio 0.28
0.29
Reduction in Area, % 62
13 to 45
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 740
630 to 1300
Tensile Strength: Yield (Proof), MPa 390
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 900
400 to 430
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.3 to 3.3
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.5 to 1.7
Embodied Energy, MJ/kg 45
20 to 22
Embodied Water, L/kg 150
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 390
400 to 3570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
22 to 46
Strength to Weight: Bending, points 24
21 to 34
Thermal Shock Resistance, points 17
18 to 38