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ASTM A266 Carbon Steel vs. ASTM A372 Grade K Steel

Both ASTM A266 carbon steel and ASTM A372 grade K steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21 to 26
23
Fatigue Strength, MPa 170 to 200
440
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 320 to 380
490
Tensile Strength: Ultimate (UTS), MPa 500 to 600
780
Tensile Strength: Yield (Proof), MPa 230 to 290
620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51 to 52
48
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.8
Embodied Energy, MJ/kg 18 to 19
24
Embodied Water, L/kg 46 to 47
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
1010
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
27
Strength to Weight: Bending, points 18 to 20
24
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 16 to 19
23