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AWS BNi-4 vs. Grade 300 Maraging Steel

AWS BNi-4 belongs to the nickel alloys classification, while grade 300 maraging steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-4 and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.31
0.3
Shear Modulus, GPa 67
75
Tensile Strength: Ultimate (UTS), MPa 430
1030 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 1070
1480
Melting Onset (Solidus), °C 980
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 60
34
Density, g/cm3 8.5
8.2
Embodied Carbon, kg CO2/kg material 10
5.1
Embodied Energy, MJ/kg 140
68
Embodied Water, L/kg 220
150

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 14
35 to 68
Strength to Weight: Bending, points 15
28 to 43
Thermal Shock Resistance, points 16
31 to 62

Alloy Composition

Aluminum (Al), % 0 to 0.050
0.050 to 0.15
Boron (B), % 1.5 to 2.2
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.060
0 to 0.030
Cobalt (Co), % 0 to 0.1
8.5 to 9.5
Iron (Fe), % 0 to 1.5
65 to 68.4
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
4.6 to 5.2
Nickel (Ni), % 91.4 to 95.5
18 to 19
Phosphorus (P), % 0 to 0.020
0 to 0.010
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 3.0 to 4.0
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0 to 0.050
0.5 to 0.8
Zirconium (Zr), % 0 to 0.050
0 to 0.020
Residuals, % 0 to 0.5
0