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SAE-AISI M3 Class 1 Steel vs. AWS BNi-9

SAE-AISI M3 class 1 steel belongs to the iron alloys classification, while AWS BNi-9 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is AWS BNi-9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
580

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1060
Melting Onset (Solidus), °C 1570
1060
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
60
Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 10
9.3
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 100
260

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 72
19
Strength to Weight: Bending, points 22 to 44
18
Thermal Shock Resistance, points 24 to 67
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
3.3 to 4.0
Carbon (C), % 1.0 to 1.1
0 to 0.060
Chromium (Cr), % 3.8 to 4.5
13.5 to 16.5
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.9 to 82.9
0 to 1.5
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 6.5
0
Nickel (Ni), % 0 to 0.3
77.1 to 83.3
Phosphorus (P), % 0 to 0.030
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5