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Annealed Type 2 Magnetic Alloy vs. ASTM A387 Grade 9 Class 1

Both annealed Type 2 magnetic alloy and ASTM A387 grade 9 class 1 are iron alloys. Both are furnished in the annealed condition. They have 52% of their average alloy composition in common. There are 25 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 annealed Type 2 magnetic alloy and the bottom bar is ASTM A387 grade 9 class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 38
20
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 510
500
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.9
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
10

Otherwise Unclassified Properties

Base Metal Price, % relative 33
6.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 5.9
2.1
Embodied Energy, MJ/kg 81
28
Embodied Water, L/kg 140
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
83
Resilience: Unit (Modulus of Resilience), kJ/m3 170
140
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 17
18
Strength to Weight: Bending, points 17
18
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.15
Chromium (Cr), % 0 to 0.3
8.0 to 10
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 48.2 to 53
87.1 to 90.8
Manganese (Mn), % 0 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.3
0.9 to 1.1
Nickel (Ni), % 47 to 49
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0 to 0.040