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Type 4 Magnetic Alloy vs. ACI-ASTM CN3MN Steel

Type 4 magnetic alloy belongs to the nickel alloys classification, while ACI-ASTM CN3MN steel belongs to the iron alloys. They have 44% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is Type 4 magnetic alloy and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 2.0 to 40
39
Fatigue Strength, MPa 220 to 400
250
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 620 to 1100
620
Tensile Strength: Yield (Proof), MPa 270 to 1040
300

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 440
460
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 60
33
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 10
6.2
Embodied Energy, MJ/kg 140
84
Embodied Water, L/kg 210
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 200
200
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 2840
210
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 19 to 35
21
Strength to Weight: Bending, points 18 to 27
20
Thermal Shock Resistance, points 21 to 37
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 0 to 0.3
20 to 22
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0 to 0.75
Iron (Fe), % 9.5 to 17.5
41.4 to 50.3
Manganese (Mn), % 0 to 0.8
0 to 2.0
Molybdenum (Mo), % 3.5 to 6.0
6.0 to 7.0
Nickel (Ni), % 79 to 82
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
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 0.010