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AISI 431 Stainless Steel vs. Type 1 Magnetic Alloy

Both AISI 431 stainless steel and Type 1 magnetic alloy are iron alloys. They have 56% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is Type 1 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 15 to 17
4.0 to 38
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
500 to 830
Tensile Strength: Yield (Proof), MPa 710 to 1040
220 to 790

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1510
1420
Melting Onset (Solidus), °C 1450
1370
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
31
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.2
5.6
Embodied Energy, MJ/kg 31
77
Embodied Water, L/kg 120
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
33 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
130 to 1690
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 50
17 to 28
Strength to Weight: Bending, points 27 to 36
17 to 24
Thermal Shock Resistance, points 28 to 43
16 to 26

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.050
Chromium (Cr), % 15 to 17
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78.2 to 83.8
50.7 to 56.5
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 1.3 to 2.5
43.5 to 46.5
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030