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AISI 347H Stainless Steel vs. Type 4 Magnetic Alloy

AISI 347H stainless steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 25% 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 (8, in this case) are not shown.

For each property being compared, the top bar is AISI 347H stainless steel and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
2.0 to 40
Fatigue Strength, MPa 200
220 to 400
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
73
Shear Strength, MPa 400
420 to 630
Tensile Strength: Ultimate (UTS), MPa 580
620 to 1100
Tensile Strength: Yield (Proof), MPa 230
270 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 940
900
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
440
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 19
60
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 3.6
10
Embodied Energy, MJ/kg 52
140
Embodied Water, L/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
22 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 140
190 to 2840
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21
19 to 35
Strength to Weight: Bending, points 20
18 to 27
Thermal Shock Resistance, points 13
21 to 37

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.050
Chromium (Cr), % 17 to 19
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 64.1 to 74
9.5 to 17.5
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 0
3.5 to 6.0
Nickel (Ni), % 9.0 to 13
79 to 82
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020