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AWS BAg-22 vs. ASTM A387 Grade 21 Steel

AWS BAg-22 belongs to the otherwise unclassified metals classification, while ASTM A387 grade 21 steel 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 21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 36
74
Tensile Strength: Ultimate (UTS), MPa 140
500 to 590

Thermal Properties

Latent Heat of Fusion, J/g 150
260
Melting Completion (Liquidus), °C 700
1470
Melting Onset (Solidus), °C 680
1430
Specific Heat Capacity, J/kg-K 320
470
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 48
1.8
Embodied Energy, MJ/kg 760
23

Common Calculations

Stiffness to Weight: Axial, points 5.9
13
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 4.3
18 to 21
Strength to Weight: Bending, points 6.6
18 to 20
Thermal Shock Resistance, points 5.1
14 to 17

Alloy Composition


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Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
2.8 to 3.3
Copper (Cu), % 15 to 17
0
Iron (Fe), % 0
94.4 to 96
Manganese (Mn), % 7.0 to 8.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 4.0 to 5.0
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 48 to 50
0
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 21 to 25
0
Residuals, % 0 to 0.15
0