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S21904 Stainless Steel vs. Type 1 Magnetic Alloy

Both S21904 stainless steel and Type 1 magnetic alloy are iron alloys. They have 61% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S21904 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, % 17 to 51
4.0 to 38
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
500 to 830
Tensile Strength: Yield (Proof), MPa 390 to 910
220 to 790

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 15
31
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.0
5.6
Embodied Energy, MJ/kg 43
77
Embodied Water, L/kg 160
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
33 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
130 to 1690
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25 to 36
17 to 28
Strength to Weight: Bending, points 23 to 29
17 to 24
Thermal Shock Resistance, points 15 to 21
16 to 26

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.050
Chromium (Cr), % 19 to 21.5
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 59.5 to 67.4
50.7 to 56.5
Manganese (Mn), % 8.0 to 10
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 5.5 to 7.5
43.5 to 46.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants