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ACI-ASTM CK3MCuN Steel vs. AWS BVAu-7

ACI-ASTM CK3MCuN steel belongs to the iron alloys classification, while AWS BVAu-7 belongs to the otherwise unclassified metals. 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 ACI-ASTM CK3MCuN steel and the bottom bar is AWS BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
130
Poisson's Ratio 0.28
0.38
Shear Modulus, GPa 80
45
Tensile Strength: Ultimate (UTS), MPa 620
200

Thermal Properties

Latent Heat of Fusion, J/g 300
140
Melting Completion (Liquidus), °C 1460
1120
Melting Onset (Solidus), °C 1350
1100
Specific Heat Capacity, J/kg-K 460
240
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Density, g/cm3 8.0
15

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 21
3.7
Strength to Weight: Bending, points 20
5.1
Thermal Shock Resistance, points 14
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.025
0 to 0.0050
Chromium (Cr), % 19.5 to 20.5
0
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 0.5 to 1.0
0
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 49.5 to 56.3
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 1.2
0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
24.5 to 25.5
Nitrogen (N), % 0.18 to 0.24
0
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0 to 0.045
0 to 0.0020
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 0.0010