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AWS BNi-2 vs. Grade 200 Maraging Steel

AWS BNi-2 belongs to the nickel alloys classification, while grade 200 maraging steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-2 and the bottom bar is grade 200 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.3
0.3
Shear Modulus, GPa 68
74
Tensile Strength: Ultimate (UTS), MPa 440
970 to 1500

Thermal Properties

Latent Heat of Fusion, J/g 360
260
Melting Completion (Liquidus), °C 1000
1460
Melting Onset (Solidus), °C 970
1420
Specific Heat Capacity, J/kg-K 490
460
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 55
31
Density, g/cm3 8.2
8.2
Embodied Carbon, kg CO2/kg material 9.3
4.5
Embodied Energy, MJ/kg 130
59
Embodied Water, L/kg 230
140

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 15
33 to 51
Strength to Weight: Bending, points 16
27 to 35
Thermal Shock Resistance, points 16
29 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.050
0.050 to 0.15
Boron (B), % 2.8 to 3.5
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 6.0 to 8.0
0
Cobalt (Co), % 0 to 0.1
8.0 to 9.0
Iron (Fe), % 2.5 to 3.5
67.8 to 71.8
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 79.1 to 84.8
17 to 19
Phosphorus (P), % 0 to 0.020
0 to 0.010
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0 to 0.050
0.15 to 0.25
Zirconium (Zr), % 0 to 0.050
0 to 0.020
Residuals, % 0 to 0.5
0