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ASTM A266 Carbon Steel vs. S32304 Stainless Steel

Both ASTM A266 carbon steel and S32304 stainless 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 ASTM A266 carbon steel and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 26
28
Fatigue Strength, MPa 170 to 200
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Shear Strength, MPa 320 to 380
440
Tensile Strength: Ultimate (UTS), MPa 500 to 600
670
Tensile Strength: Yield (Proof), MPa 230 to 290
460

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1050
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51 to 52
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 18 to 19
40
Embodied Water, L/kg 46 to 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
520
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
24
Strength to Weight: Bending, points 18 to 20
22
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 16 to 19
18