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AWS BVAg-31 vs. ACI-ASTM CH20 Steel

AWS BVAg-31 belongs to the otherwise unclassified metals classification, while ACI-ASTM CH20 steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-31 and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
200
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 33
78
Tensile Strength: Ultimate (UTS), MPa 180
610

Thermal Properties

Latent Heat of Fusion, J/g 150
310
Melting Completion (Liquidus), °C 850
1410
Melting Onset (Solidus), °C 820
1430
Specific Heat Capacity, J/kg-K 280
480
Thermal Expansion, µm/m-K 18
15

Otherwise Unclassified Properties

Density, g/cm3 10
7.8

Common Calculations

Stiffness to Weight: Axial, points 4.9
14
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.9
22
Strength to Weight: Bending, points 7.0
21
Thermal Shock Resistance, points 7.8
15

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.2
Chromium (Cr), % 0
22 to 26
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
54.7 to 66
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
12 to 15
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 57 to 59
0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.0010
0