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AWS BAg-22 vs. ASTM A387 Grade 91 Class 2

AWS BAg-22 belongs to the otherwise unclassified metals classification, while ASTM A387 grade 91 class 2 belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-22 and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 36
75
Tensile Strength: Ultimate (UTS), MPa 140
670

Thermal Properties

Latent Heat of Fusion, J/g 150
270
Melting Completion (Liquidus), °C 700
1460
Melting Onset (Solidus), °C 680
1420
Specific Heat Capacity, J/kg-K 320
470
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 48
2.6
Embodied Energy, MJ/kg 760
37

Common Calculations

Stiffness to Weight: Axial, points 5.9
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 4.3
24
Strength to Weight: Bending, points 6.6
22
Thermal Shock Resistance, points 5.1
19

Alloy Composition


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Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 15 to 17
0
Iron (Fe), % 0
87.3 to 90.3
Manganese (Mn), % 7.0 to 8.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 4.0 to 5.0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0.2 to 0.5
Silver (Ag), % 48 to 50
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 21 to 25
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0