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AWS BNi-8 vs. ACI-ASTM CE8MN Steel

AWS BNi-8 belongs to the nickel alloys classification, while ACI-ASTM CE8MN steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-8 and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 67
80
Tensile Strength: Ultimate (UTS), MPa 570
750

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Melting Completion (Liquidus), °C 1010
1440
Melting Onset (Solidus), °C 980
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 46
21
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
4.2
Embodied Energy, MJ/kg 120
58
Embodied Water, L/kg 220
180

Common Calculations

Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
27
Strength to Weight: Bending, points 19
23
Thermal Shock Resistance, points 17
21

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 0
22.5 to 25.5
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0
56 to 66.4
Manganese (Mn), % 21.5 to 24.5
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.5
Nickel (Ni), % 61.6 to 68.5
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 6.0 to 8.0
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0