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AISI 409 Stainless Steel vs. ASTM A202 Steel

Both AISI 409 stainless steel and ASTM A202 steel are iron alloys. There are 30 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 AISI 409 stainless steel and the bottom bar is ASTM A202 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 24
17 to 18
Fatigue Strength, MPa 140
240
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 270
360 to 410
Tensile Strength: Ultimate (UTS), MPa 420
590 to 670
Tensile Strength: Yield (Proof), MPa 200
350 to 360

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 710
410
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
52
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 94
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
93 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 100
330 to 350
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
21 to 24
Strength to Weight: Bending, points 16
20 to 22
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 15
17 to 20