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EN 1.4971 Stainless Steel vs. Type 4 Magnetic Alloy

EN 1.4971 stainless steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
2.0 to 40
Fatigue Strength, MPa 270
220 to 400
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
420 to 630
Tensile Strength: Ultimate (UTS), MPa 800
620 to 1100
Tensile Strength: Yield (Proof), MPa 340
270 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1370
Specific Heat Capacity, J/kg-K 450
440
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
60
Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 7.6
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 300
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
22 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
190 to 2840
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 26
19 to 35
Strength to Weight: Bending, points 23
18 to 27
Thermal Shock Resistance, points 19
21 to 37

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.050
Chromium (Cr), % 20 to 22.5
0 to 0.3
Cobalt (Co), % 18.5 to 21
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 24.3 to 37.1
9.5 to 17.5
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 2.5 to 3.5
3.5 to 6.0
Nickel (Ni), % 19 to 21
79 to 82
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 2.0 to 3.0
0