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S21900 Stainless Steel vs. ASTM A588 Steel

Both S21900 stainless steel and ASTM A588 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is ASTM A588 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
22
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 510
350
Tensile Strength: Ultimate (UTS), MPa 710
550
Tensile Strength: Yield (Proof), MPa 390
390

Thermal Properties

Latent Heat of Fusion, J/g 290
250 to 260
Maximum Temperature: Mechanical, °C 980
410
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1410 to 1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
43 to 44
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.3 to 2.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.5 to 1.6
Embodied Energy, MJ/kg 43
20 to 22
Embodied Water, L/kg 160
50 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
110
Resilience: Unit (Modulus of Resilience), kJ/m3 380
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 15
16