MakeItFrom.com
Menu (ESC)

Type 4 Magnetic Alloy vs. R30155 Cobalt

Type 4 magnetic alloy belongs to the nickel alloys classification, while R30155 cobalt belongs to the iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is Type 4 magnetic alloy and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 2.0 to 40
34
Fatigue Strength, MPa 220 to 400
310
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 73
81
Shear Strength, MPa 420 to 630
570
Tensile Strength: Ultimate (UTS), MPa 620 to 1100
850
Tensile Strength: Yield (Proof), MPa 270 to 1040
390

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 440
450
Thermal Expansion, µm/m-K 11
14

Otherwise Unclassified Properties

Base Metal Price, % relative 60
80
Density, g/cm3 8.8
8.5
Embodied Carbon, kg CO2/kg material 10
9.7
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 210
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 200
230
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 2840
370
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 19 to 35
28
Strength to Weight: Bending, points 18 to 27
24
Thermal Shock Resistance, points 21 to 37
21

Alloy Composition

Carbon (C), % 0 to 0.050
0.080 to 0.16
Chromium (Cr), % 0 to 0.3
20 to 22.5
Cobalt (Co), % 0 to 0.5
18.5 to 21
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 9.5 to 17.5
24.3 to 36.2
Manganese (Mn), % 0 to 0.8
1.0 to 2.0
Molybdenum (Mo), % 3.5 to 6.0
2.5 to 3.5
Nickel (Ni), % 79 to 82
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0