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Grade 250 Maraging Steel vs. AWS BVAu-7

Grade 250 maraging 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 (12, in this case) are not shown.

For each property being compared, the top bar is grade 250 maraging steel and the bottom bar is AWS BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
130
Poisson's Ratio 0.3
0.38
Shear Modulus, GPa 75
45
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
200

Thermal Properties

Latent Heat of Fusion, J/g 270
140
Melting Completion (Liquidus), °C 1480
1120
Melting Onset (Solidus), °C 1430
1100
Specific Heat Capacity, J/kg-K 450
240
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.2
15

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 33 to 61
3.7
Strength to Weight: Bending, points 26 to 40
5.1
Thermal Shock Resistance, points 29 to 54
8.9

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), % 7.0 to 8.5
0 to 0.060
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 66.3 to 71.1
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), % 17 to 19
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
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), % 0.3 to 0.5
0
Zinc (Zn), % 0
0 to 0.0010
Zirconium (Zr), % 0 to 0.020
0