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SAE-AISI A7 Steel vs. AWS BAg-9

SAE-AISI A7 steel belongs to the iron alloys classification, while AWS BAg-9 belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is AWS BAg-9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
82
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 72
31
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
140

Thermal Properties

Latent Heat of Fusion, J/g 260
130
Melting Completion (Liquidus), °C 1470
720
Melting Onset (Solidus), °C 1430
670
Specific Heat Capacity, J/kg-K 470
290
Thermal Expansion, µm/m-K 12
20

Otherwise Unclassified Properties

Density, g/cm3 7.7
9.6
Embodied Energy, MJ/kg 200
980

Common Calculations

Stiffness to Weight: Axial, points 13
4.8
Stiffness to Weight: Bending, points 25
15
Strength to Weight: Axial, points 29 to 77
4.1
Strength to Weight: Bending, points 25 to 48
6.3
Thermal Shock Resistance, points 27 to 72
6.0

Alloy Composition

Carbon (C), % 2.0 to 2.9
0
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
19 to 21
Iron (Fe), % 81.4 to 87.7
0
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
64 to 66
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Zinc (Zn), % 0
13 to 17
Residuals, % 0
0 to 0.15