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ASTM A414 Steel vs. S21800 Stainless Steel

Both ASTM A414 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 A414 steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 180
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 26
40
Fatigue Strength, MPa 140 to 260
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 230 to 370
510
Tensile Strength: Ultimate (UTS), MPa 360 to 590
740
Tensile Strength: Yield (Proof), MPa 190 to 350
390

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
15
Density, g/cm3 7.8 to 7.9
7.5
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
3.1
Embodied Energy, MJ/kg 20 to 22
45
Embodied Water, L/kg 48
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 130
250
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 330
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 13 to 21
27
Strength to Weight: Bending, points 14 to 20
24
Thermal Shock Resistance, points 11 to 17
17