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ASTM A266 Carbon Steel vs. S20161 Stainless Steel

Both ASTM A266 carbon steel and S20161 stainless steel are iron alloys. There are 32 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 ASTM A266 carbon steel and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21 to 26
46
Fatigue Strength, MPa 170 to 200
360
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34 to 43
45
Shear Modulus, GPa 73
76
Shear Strength, MPa 320 to 380
690
Tensile Strength: Ultimate (UTS), MPa 500 to 600
980
Tensile Strength: Yield (Proof), MPa 230 to 290
390

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 400
870
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51 to 52
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.4
2.7
Embodied Energy, MJ/kg 18 to 19
39
Embodied Water, L/kg 46 to 47
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
360
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 18 to 21
36
Strength to Weight: Bending, points 18 to 20
29
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 16 to 19
22