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Grade 300 Maraging Steel vs. AWS BNi-6

Grade 300 maraging steel belongs to the iron alloys classification, while AWS BNi-6 belongs to the nickel 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 grade 300 maraging steel and the bottom bar is AWS BNi-6.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Poisson's Ratio 0.3
0.31
Shear Modulus, GPa 75
62
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
450

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1480
880
Melting Onset (Solidus), °C 1430
880
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 34
55
Density, g/cm3 8.2
8.2
Embodied Carbon, kg CO2/kg material 5.1
9.4
Embodied Energy, MJ/kg 68
130
Embodied Water, L/kg 150
210

Common Calculations

Stiffness to Weight: Axial, points 13
11
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 35 to 68
15
Strength to Weight: Bending, points 28 to 43
16
Thermal Shock Resistance, points 31 to 62
20

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0 to 0.050
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.060
Cobalt (Co), % 8.5 to 9.5
0 to 0.1
Iron (Fe), % 65 to 68.4
0
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
87.2 to 90
Phosphorus (P), % 0 to 0.010
10 to 12
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0.5 to 0.8
0 to 0.050
Zirconium (Zr), % 0 to 0.020
0 to 0.050
Residuals, % 0
0 to 0.5