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ACI-ASTM CB7Cu-2 Steel vs. Type 1 Magnetic Alloy

Both ACI-ASTM CB7Cu-2 steel and Type 1 magnetic alloy are iron alloys. They have 60% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is Type 1 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.7 to 11
4.0 to 38
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 75
72
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
500 to 830
Tensile Strength: Yield (Proof), MPa 760 to 1180
220 to 790

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
31
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 2.6
5.6
Embodied Energy, MJ/kg 38
77
Embodied Water, L/kg 130
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
33 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
130 to 1690
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 34 to 48
17 to 28
Strength to Weight: Bending, points 28 to 35
17 to 24
Thermal Shock Resistance, points 32 to 45
16 to 26

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.050
Chromium (Cr), % 14 to 15.5
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 2.5 to 3.2
0 to 0.3
Iron (Fe), % 73.6 to 79
50.7 to 56.5
Manganese (Mn), % 0 to 0.7
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 4.5 to 5.5
43.5 to 46.5
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030