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ASTM A266 Carbon Steel vs. EN 1.4122 Stainless Steel

Both ASTM A266 carbon steel and EN 1.4122 stainless steel are iron alloys. There are 30 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 EN 1.4122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 26
14
Fatigue Strength, MPa 170 to 200
260 to 360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 320 to 380
480 to 520
Tensile Strength: Ultimate (UTS), MPa 500 to 600
790 to 850
Tensile Strength: Yield (Proof), MPa 230 to 290
450 to 630

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
870
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51 to 52
15
Thermal Expansion, µm/m-K 12
10

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
9.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.4
Embodied Energy, MJ/kg 18 to 19
33
Embodied Water, L/kg 46 to 47
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
93 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
520 to 1000
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
28 to 31
Strength to Weight: Bending, points 18 to 20
25 to 26
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 16 to 19
28 to 30