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Type 3 Magnetic Alloy vs. ASTM A387 Grade 12 Steel

Type 3 magnetic alloy belongs to the nickel alloys classification, while ASTM A387 grade 12 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is Type 3 magnetic alloy and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 43
25
Fatigue Strength, MPa 170
190 to 230
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 70
73
Shear Strength, MPa 380
300 to 330
Tensile Strength: Ultimate (UTS), MPa 550
470 to 520
Tensile Strength: Yield (Proof), MPa 210
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 910
430
Melting Completion (Liquidus), °C 1370
1470
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 55
2.8
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.7
1.6
Embodied Energy, MJ/kg 120
21
Embodied Water, L/kg 220
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 120
180 to 250
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 18
16 to 18
Strength to Weight: Bending, points 17
17 to 18
Thermal Shock Resistance, points 18
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.050
0.050 to 0.17
Chromium (Cr), % 2.0 to 3.0
0.8 to 1.2
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 4.0 to 6.0
0
Iron (Fe), % 9.9 to 19
97 to 98.2
Manganese (Mn), % 0 to 1.5
0.4 to 0.65
Molybdenum (Mo), % 0 to 0.5
0.45 to 0.6
Nickel (Ni), % 75 to 78
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.025