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S21900 Stainless Steel vs. ASTM A209 Steel

Both S21900 stainless steel and ASTM A209 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S21900 stainless steel and the bottom bar is ASTM A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
34
Fatigue Strength, MPa 380
180 to 200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 510
280 to 310
Tensile Strength: Ultimate (UTS), MPa 710
420 to 460
Tensile Strength: Yield (Proof), MPa 390
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
410
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
50
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.5
Embodied Energy, MJ/kg 43
20
Embodied Water, L/kg 160
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 380
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
15 to 16
Strength to Weight: Bending, points 23
16 to 17
Thermal Diffusivity, mm2/s 3.8
13
Thermal Shock Resistance, points 15
12 to 14