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ACI-ASTM CD6MN Steel vs. AWS BNi-7

ACI-ASTM CD6MN steel belongs to the iron alloys classification, while AWS BNi-7 belongs to the nickel 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 ACI-ASTM CD6MN steel and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
170
Poisson's Ratio 0.27
0.3
Shear Modulus, GPa 80
67
Tensile Strength: Ultimate (UTS), MPa 730
550

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1440
890
Melting Onset (Solidus), °C 1390
890
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 17
55
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.4
8.8
Embodied Energy, MJ/kg 48
120
Embodied Water, L/kg 170
240

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
19
Thermal Shock Resistance, points 20
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.060
0 to 0.060
Chromium (Cr), % 24 to 27
13 to 15
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 62.1 to 70.1
0 to 0.2
Manganese (Mn), % 0 to 1.0
0 to 0.040
Molybdenum (Mo), % 1.8 to 2.5
0
Nickel (Ni), % 4.0 to 6.0
73.3 to 77.3
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5