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AISI 329 Stainless Steel vs. Type 3 Magnetic Alloy

AISI 329 stainless steel belongs to the iron alloys classification, while Type 3 magnetic alloy belongs to the nickel alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 329 stainless steel and the bottom bar is Type 3 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 17
43
Fatigue Strength, MPa 330
170
Poisson's Ratio 0.27
0.31
Shear Modulus, GPa 80
70
Shear Strength, MPa 440
380
Tensile Strength: Ultimate (UTS), MPa 710
550
Tensile Strength: Yield (Proof), MPa 540
210

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1440
1370
Melting Onset (Solidus), °C 1390
1320
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 16
55
Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 3.1
8.7
Embodied Energy, MJ/kg 44
120
Embodied Water, L/kg 170
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190
Resilience: Unit (Modulus of Resilience), kJ/m3 730
120
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 23
17
Thermal Shock Resistance, points 19
18

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 23 to 28
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 63.1 to 74
9.9 to 19
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.0 to 2.0
0 to 0.5
Nickel (Ni), % 2.0 to 5.0
75 to 78
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020