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ASTM A572 Steel vs. ASTM A588 Steel

Both ASTM A572 steel and ASTM A588 steel are iron alloys.

For each property being compared, the top bar is ASTM A572 steel and the bottom bar is ASTM A588 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 190
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 25
22
Fatigue Strength, MPa 240 to 340
270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 380
350
Tensile Strength: Ultimate (UTS), MPa 470 to 620
550
Tensile Strength: Yield (Proof), MPa 330 to 510
390

Thermal Properties

Latent Heat of Fusion, J/g 250
250 to 260
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410 to 1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
43 to 44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.3
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
2.3 to 2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5 to 1.6
Embodied Energy, MJ/kg 22
20 to 22
Embodied Water, L/kg 47
50 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 690
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 22
20
Strength to Weight: Bending, points 17 to 21
19
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 14 to 18
16