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SAE-AISI A8 Steel vs. AWS BAg-37

SAE-AISI A8 steel belongs to the iron alloys classification, while AWS BAg-37 belongs to the otherwise unclassified metals. There are 17 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 SAE-AISI A8 steel and the bottom bar is AWS BAg-37.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
94
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
36
Tensile Strength: Ultimate (UTS), MPa 700 to 1920
180

Thermal Properties

Latent Heat of Fusion, J/g 270
150
Melting Completion (Liquidus), °C 1480
780
Melting Onset (Solidus), °C 1430
690
Specific Heat Capacity, J/kg-K 470
350
Thermal Expansion, µm/m-K 12
21

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 2.3
26
Embodied Energy, MJ/kg 31
410

Common Calculations

Stiffness to Weight: Axial, points 14
6.1
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 25 to 68
5.9
Strength to Weight: Bending, points 22 to 44
8.3
Thermal Shock Resistance, points 22 to 62
6.6

Alloy Composition


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Carbon (C), % 0.5 to 0.6
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
39 to 41
Iron (Fe), % 88.5 to 91.9
0
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.2 to 1.7
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.75 to 1.1
0
Silver (Ag), % 0
24 to 26
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Tungsten (W), % 1.0 to 1.5
0
Zinc (Zn), % 0
31 to 35
Residuals, % 0
0 to 0.15