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ACI-ASTM CF3MN Steel vs. AWS BVAu-7

ACI-ASTM CF3MN 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 CF3MN 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 78
45
Tensile Strength: Ultimate (UTS), MPa 580
200

Thermal Properties

Latent Heat of Fusion, J/g 300
140
Melting Completion (Liquidus), °C 1440
1120
Melting Onset (Solidus), °C 1390
1100
Specific Heat Capacity, J/kg-K 480
240
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Density, g/cm3 7.8
15

Common Calculations

Stiffness to Weight: Axial, points 14
4.7
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 20
3.7
Strength to Weight: Bending, points 20
5.1
Thermal Shock Resistance, points 13
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.030
0 to 0.0050
Chromium (Cr), % 17 to 22
0
Cobalt (Co), % 0
0 to 0.060
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 58.7 to 71.9
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 9.0 to 13
24.5 to 25.5
Nitrogen (N), % 0.1 to 0.2
0
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0 to 0.040
0 to 0.0020
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.0010