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AWS BAg-9 vs. ACI-ASTM CN3MN Steel

AWS BAg-9 belongs to the otherwise unclassified metals classification, while ACI-ASTM CN3MN steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-9 and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
210
Poisson's Ratio 0.35
0.28
Shear Modulus, GPa 31
80
Tensile Strength: Ultimate (UTS), MPa 140
620

Thermal Properties

Latent Heat of Fusion, J/g 130
310
Melting Completion (Liquidus), °C 720
1460
Melting Onset (Solidus), °C 670
1410
Specific Heat Capacity, J/kg-K 290
460
Thermal Expansion, µm/m-K 20
16

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.1
Embodied Energy, MJ/kg 980
84

Common Calculations

Stiffness to Weight: Axial, points 4.8
14
Stiffness to Weight: Bending, points 15
24
Strength to Weight: Axial, points 4.1
21
Strength to Weight: Bending, points 6.3
20
Thermal Shock Resistance, points 6.0
14

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 19 to 21
0 to 0.75
Iron (Fe), % 0
41.4 to 50.3
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 64 to 66
0
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 13 to 17
0
Residuals, % 0 to 0.15
0