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AISI 303 Stainless Steel vs. Type 4 Magnetic Alloy

AISI 303 stainless steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 23% 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 303 stainless steel and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40 to 51
2.0 to 40
Fatigue Strength, MPa 230 to 360
220 to 400
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
73
Shear Strength, MPa 430 to 470
420 to 630
Tensile Strength: Ultimate (UTS), MPa 600 to 690
620 to 1100
Tensile Strength: Yield (Proof), MPa 230 to 420
270 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 930
900
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
60
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 3.0
10
Embodied Energy, MJ/kg 42
140
Embodied Water, L/kg 140
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
22 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
190 to 2840
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21 to 25
19 to 35
Strength to Weight: Bending, points 20 to 22
18 to 27
Thermal Shock Resistance, points 13 to 15
21 to 37

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.050
Chromium (Cr), % 17 to 19
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 67.3 to 74.9
9.5 to 17.5
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 0
3.5 to 6.0
Nickel (Ni), % 8.0 to 10
79 to 82
Phosphorus (P), % 0 to 0.2
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0.15 to 0.35
0 to 0.020

Comparable Variants