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SAE-AISI 1018 Steel vs. Type 3 Magnetic Alloy

SAE-AISI 1018 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 (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1018 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 27
43
Fatigue Strength, MPa 180 to 270
170
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
70
Shear Strength, MPa 280 to 300
380
Tensile Strength: Ultimate (UTS), MPa 430 to 480
550
Tensile Strength: Yield (Proof), MPa 240 to 400
210

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
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 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
55
Density, g/cm3 7.9
8.7
Embodied Carbon, kg CO2/kg material 1.4
8.7
Embodied Energy, MJ/kg 18
120
Embodied Water, L/kg 46
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 100
190
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
120
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 15 to 17
18
Strength to Weight: Bending, points 16 to 17
17
Thermal Shock Resistance, points 14 to 15
18

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.050
Chromium (Cr), % 0
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 98.8 to 99.25
9.9 to 19
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
75 to 78
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.020