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Grade 350 Maraging Steel vs. AWS BVAu-4

Grade 350 maraging steel belongs to the iron alloys classification, while AWS BVAu-4 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (12, 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 grade 350 maraging steel and the bottom bar is AWS BVAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.3
0.4
Shear Modulus, GPa 75
41
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
190

Thermal Properties

Latent Heat of Fusion, J/g 270
100
Melting Completion (Liquidus), °C 1470
950
Melting Onset (Solidus), °C 1420
950
Specific Heat Capacity, J/kg-K 450
190
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 8.2
17

Common Calculations

Stiffness to Weight: Axial, points 13
3.6
Stiffness to Weight: Bending, points 23
9.3
Strength to Weight: Axial, points 38 to 82
3.0
Strength to Weight: Bending, points 29 to 49
4.2
Thermal Shock Resistance, points 35 to 74
8.7

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Cadmium (Cd), % 0
0 to 0.0010
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.0050
Cobalt (Co), % 11.5 to 12.5
0
Gold (Au), % 0
81.5 to 82.5
Iron (Fe), % 61.2 to 64.6
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
17.5 to 18.5
Phosphorus (P), % 0 to 0.010
0 to 0.0020
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 1.3 to 1.6
0
Zinc (Zn), % 0
0 to 0.0010
Zirconium (Zr), % 0 to 0.020
0