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ASTM A266 Carbon Steel vs. S31260 Stainless Steel

Both ASTM A266 carbon steel and S31260 stainless steel are iron alloys. There are 31 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 S31260 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 26
23
Fatigue Strength, MPa 170 to 200
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Shear Strength, MPa 320 to 380
500
Tensile Strength: Ultimate (UTS), MPa 500 to 600
790
Tensile Strength: Yield (Proof), MPa 230 to 290
540

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51 to 52
16
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
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.9
Embodied Energy, MJ/kg 18 to 19
53
Embodied Water, L/kg 46 to 47
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
720
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
28
Strength to Weight: Bending, points 18 to 20
24
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 16 to 19
22