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Type 1 Magnetic Alloy vs. S81921 Stainless Steel

Both Type 1 magnetic alloy and S81921 stainless steel are iron alloys. They have 58% 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 Type 1 magnetic alloy and the bottom bar is S81921 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.0 to 38
29
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 500 to 830
710
Tensile Strength: Yield (Proof), MPa 220 to 790
500

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
14
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.9
Embodied Energy, MJ/kg 77
41
Embodied Water, L/kg 130
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33 to 150
180
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1690
630
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 17 to 28
25
Strength to Weight: Bending, points 17 to 24
23
Thermal Shock Resistance, points 16 to 26
20

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 0 to 0.3
19 to 22
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 50.7 to 56.5
66.7 to 75.9
Manganese (Mn), % 0 to 0.8
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.3
1.0 to 2.0
Nickel (Ni), % 43.5 to 46.5
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030