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Annealed S15700 Stainless Steel vs. Annealed Type 4 Magnetic Alloy

Annealed S15700 stainless steel belongs to the iron alloys classification, while annealed Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 24% 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 annealed S15700 stainless steel and the bottom bar is annealed Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
40
Fatigue Strength, MPa 370
220
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
73
Shear Strength, MPa 770
420
Tensile Strength: Ultimate (UTS), MPa 1180
620
Tensile Strength: Yield (Proof), MPa 500
270

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 870
900
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
60
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 3.4
10
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 140
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
200
Resilience: Unit (Modulus of Resilience), kJ/m3 640
190
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 42
19
Strength to Weight: Bending, points 32
18
Thermal Shock Resistance, points 39
21

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.050
Chromium (Cr), % 14 to 16
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 69.6 to 76.8
9.5 to 17.5
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
3.5 to 6.0
Nickel (Ni), % 6.5 to 7.7
79 to 82
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 0.020