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ASTM A372 Grade G Steel vs. AWS ER80S-B8

Both ASTM A372 grade G steel and AWS ER80S-B8 are iron alloys. They have 90% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade G steel and the bottom bar is AWS ER80S-B8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 22
19
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 650 to 910
630
Tensile Strength: Yield (Proof), MPa 430 to 550
530

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 49
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
120
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 810
720
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 32
22
Strength to Weight: Bending, points 21 to 27
21
Thermal Diffusivity, mm2/s 13
6.9
Thermal Shock Resistance, points 19 to 27
17

Alloy Composition

Carbon (C), % 0.25 to 0.35
0 to 0.1
Chromium (Cr), % 0.4 to 0.65
8.0 to 10.5
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 97.4 to 98.4
85.6 to 90.8
Manganese (Mn), % 0.7 to 1.0
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.25
0.8 to 1.2
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.025
Residuals, % 0
0 to 0.5