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ASTM A572 Steel vs. ASTM A372 Grade K Steel

Both ASTM A572 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 (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A572 steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 190
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 25
23
Fatigue Strength, MPa 240 to 340
440
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 380
490
Tensile Strength: Ultimate (UTS), MPa 470 to 620
780
Tensile Strength: Yield (Proof), MPa 330 to 510
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
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.3
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.8
Embodied Energy, MJ/kg 22
24
Embodied Water, L/kg 47
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 690
1010
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 22
27
Strength to Weight: Bending, points 17 to 21
24
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 14 to 18
23