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AWS BVAg-8b vs. ACI-ASTM CK20 Steel

AWS BVAg-8b belongs to the otherwise unclassified metals classification, while ACI-ASTM CK20 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-8b and the bottom bar is ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
200
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 31
78
Tensile Strength: Ultimate (UTS), MPa 170
530

Thermal Properties

Latent Heat of Fusion, J/g 140
310
Melting Completion (Liquidus), °C 800
1400
Melting Onset (Solidus), °C 780
1430
Specific Heat Capacity, J/kg-K 280
480
Thermal Expansion, µm/m-K 19
15

Otherwise Unclassified Properties

Density, g/cm3 10
7.8

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.7
19
Strength to Weight: Bending, points 6.8
19
Thermal Shock Resistance, points 7.6
13

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0 to 0.2
Chromium (Cr), % 0
23 to 27
Copper (Cu), % 26.8 to 29.2
0
Iron (Fe), % 0
46.7 to 58
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.3 to 0.7
19 to 22
Phosphorus (P), % 0 to 0.0020
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 70.5 to 72.5
0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.0010
0