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ASTM A202 Steel vs. S21800 Stainless Steel

Both ASTM A202 steel and S21800 stainless 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 ASTM A202 steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 18
40
Fatigue Strength, MPa 240
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 360 to 410
510
Tensile Strength: Ultimate (UTS), MPa 590 to 670
740
Tensile Strength: Yield (Proof), MPa 350 to 360
390

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 410
900
Melting Completion (Liquidus), °C 1450
1360
Melting Onset (Solidus), °C 1410
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.4
3.1
Embodied Energy, MJ/kg 19
45
Embodied Water, L/kg 49
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 96
250
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 350
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 21 to 24
27
Strength to Weight: Bending, points 20 to 22
24
Thermal Shock Resistance, points 17 to 20
17