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ASTM A372 Grade G Steel vs. AWS E308H

Both ASTM A372 grade G steel and AWS E308H are iron alloys. They have 70% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 E308H.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 22
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 910
620

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
3.2
Embodied Energy, MJ/kg 20
46
Embodied Water, L/kg 49
150

Common Calculations

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
4.2
Thermal Shock Resistance, points 19 to 27
16

Alloy Composition

Carbon (C), % 0.25 to 0.35
0.040 to 0.080
Chromium (Cr), % 0.4 to 0.65
18 to 21
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 97.4 to 98.4
62.9 to 72.5
Manganese (Mn), % 0.7 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.75
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030