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Type 4 Magnetic Alloy vs. R30001 Cobalt

Type 4 magnetic alloy belongs to the nickel alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is Type 4 magnetic alloy and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 2.0 to 40
1.0
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 73
86
Tensile Strength: Ultimate (UTS), MPa 620 to 1100
620

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Melting Completion (Liquidus), °C 1420
1530
Melting Onset (Solidus), °C 1370
1260
Specific Heat Capacity, J/kg-K 440
430
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.8
9.0
Embodied Carbon, kg CO2/kg material 10
8.9
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 210
460

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 19 to 35
19
Strength to Weight: Bending, points 18 to 27
18
Thermal Shock Resistance, points 21 to 37
19

Alloy Composition

Carbon (C), % 0 to 0.050
2.0 to 3.0
Chromium (Cr), % 0 to 0.3
28 to 32
Cobalt (Co), % 0 to 0.5
43 to 59
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 9.5 to 17.5
0 to 3.0
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 3.5 to 6.0
0 to 1.0
Nickel (Ni), % 79 to 82
0 to 3.0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.020
0
Tungsten (W), % 0
11 to 13