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Grade 250 Maraging Steel vs. AWS BAu-5

Grade 250 maraging steel belongs to the iron alloys classification, while AWS BAu-5 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 BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Poisson's Ratio 0.3
0.37
Shear Modulus, GPa 75
50
Tensile Strength: Ultimate (UTS), MPa 970 to 1800
210

Thermal Properties

Latent Heat of Fusion, J/g 270
180
Melting Completion (Liquidus), °C 1480
1170
Melting Onset (Solidus), °C 1430
1140
Specific Heat Capacity, J/kg-K 450
280
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.2
13

Common Calculations

Stiffness to Weight: Axial, points 13
5.8
Stiffness to Weight: Bending, points 23
13
Strength to Weight: Axial, points 33 to 61
4.5
Strength to Weight: Bending, points 26 to 40
6.0
Thermal Shock Resistance, points 29 to 54
9.0

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0
Cobalt (Co), % 7.0 to 8.5
0
Gold (Au), % 0
29.5 to 30.5
Iron (Fe), % 66.3 to 71.1
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 17 to 19
35.5 to 36.4
Palladium (Pd), % 0
33.5 to 34.5
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.3 to 0.5
0
Zirconium (Zr), % 0 to 0.020
0
Residuals, % 0
0 to 0.15