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Type 3 Magnetic Alloy vs. EN 1.4981 Stainless Steel

Type 3 magnetic alloy belongs to the nickel alloys classification, while EN 1.4981 stainless steel belongs to the iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 Type 3 magnetic alloy and the bottom bar is EN 1.4981 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 43
39
Fatigue Strength, MPa 170
210
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 70
77
Shear Strength, MPa 380
420
Tensile Strength: Ultimate (UTS), MPa 550
610
Tensile Strength: Yield (Proof), MPa 210
240

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 910
940
Melting Completion (Liquidus), °C 1370
1440
Melting Onset (Solidus), °C 1320
1400
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 55
25
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 8.7
4.8
Embodied Energy, MJ/kg 120
67
Embodied Water, L/kg 220
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
190
Resilience: Unit (Modulus of Resilience), kJ/m3 120
150
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 17
20
Thermal Shock Resistance, points 18
14

Alloy Composition

Carbon (C), % 0 to 0.050
0.040 to 0.1
Chromium (Cr), % 2.0 to 3.0
15.5 to 17.5
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 4.0 to 6.0
0
Iron (Fe), % 9.9 to 19
59.6 to 66.7
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
1.6 to 2.0
Nickel (Ni), % 75 to 78
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Phosphorus (P), % 0 to 0.010
0 to 0.035
Silicon (Si), % 0 to 0.5
0.3 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.015