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ACI-ASTM CA15M Steel vs. AWS BVAu-2

ACI-ASTM CA15M steel belongs to the iron alloys classification, while AWS BVAu-2 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ACI-ASTM CA15M steel and the bottom bar is AWS BVAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 76
36
Tensile Strength: Ultimate (UTS), MPa 690
150

Thermal Properties

Latent Heat of Fusion, J/g 270
92
Melting Completion (Liquidus), °C 1450
890
Melting Onset (Solidus), °C 1410
890
Specific Heat Capacity, J/kg-K 480
180
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Density, g/cm3 7.8
17

Common Calculations

Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
9.1
Strength to Weight: Axial, points 25
2.4
Strength to Weight: Bending, points 22
3.6
Thermal Shock Resistance, points 25
7.1

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.15
0 to 0.0050
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
19.5 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 82.1 to 88.4
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.15 to 1.0
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.0020
Silicon (Si), % 0 to 0.65
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.0010