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AISI 347H Stainless Steel vs. Type 3 Magnetic Alloy

AISI 347H stainless steel belongs to the iron alloys classification, while Type 3 magnetic alloy belongs to the nickel alloys. They have a modest 29% 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 3 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 39
43
Fatigue Strength, MPa 200
170
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
70
Shear Strength, MPa 400
380
Tensile Strength: Ultimate (UTS), MPa 580
550
Tensile Strength: Yield (Proof), MPa 230
210

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Mechanical, °C 940
910
Melting Completion (Liquidus), °C 1430
1370
Melting Onset (Solidus), °C 1390
1320
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 16
12

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
55
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 3.6
8.7
Embodied Energy, MJ/kg 52
120
Embodied Water, L/kg 150
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21
18
Strength to Weight: Bending, points 20
17
Thermal Shock Resistance, points 13
18

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.050
Chromium (Cr), % 17 to 19
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 64.1 to 74
9.9 to 19
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.0 to 13
75 to 78
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