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ASTM A372 Grade J Steel vs. Type 3 Magnetic Alloy

ASTM A372 grade J steel belongs to the iron alloys classification, while Type 3 magnetic alloy belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade J steel and the bottom bar is Type 3 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 17 to 22
43
Fatigue Strength, MPa 310 to 570
170
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
70
Shear Strength, MPa 410 to 630
380
Tensile Strength: Ultimate (UTS), MPa 650 to 1020
550
Tensile Strength: Yield (Proof), MPa 430 to 850
210

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
910
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1320
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
55
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
8.7
Embodied Energy, MJ/kg 20
120
Embodied Water, L/kg 51
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
190
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 1930
120
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 23 to 36
18
Strength to Weight: Bending, points 21 to 29
17
Thermal Shock Resistance, points 19 to 30
18

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.050
Chromium (Cr), % 0.8 to 1.2
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 96.7 to 97.8
9.9 to 19
Manganese (Mn), % 0.75 to 1.1
0 to 1.5
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.5
Nickel (Ni), % 0
75 to 78
Phosphorus (P), % 0 to 0.015
0 to 0.010
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.020