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Type 2 Magnetic Alloy vs. SAE-AISI P21 Steel

Both Type 2 magnetic alloy and SAE-AISI P21 steel are iron alloys. They have 56% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is Type 2 magnetic alloy and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 510 to 910
1130

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.9
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 33
6.5
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 5.9
2.3
Embodied Energy, MJ/kg 81
32
Embodied Water, L/kg 140
62

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 17 to 30
40
Strength to Weight: Bending, points 17 to 25
31
Thermal Shock Resistance, points 16 to 29
37

Alloy Composition

Carbon (C), % 0 to 0.050
0.18 to 0.22
Chromium (Cr), % 0 to 0.3
0 to 0.5
Cobalt (Co), % 0 to 0.5
1.1 to 1.3
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 48.2 to 53
92.1 to 94.2
Manganese (Mn), % 0 to 0.8
0.35 to 0.72
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 47 to 49
3.9 to 4.3
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.15 to 0.25