Super Alloy HY MU 80(tm) is stocked by 14 North American distributors and produced by 6 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Flat Rolled Products by 13 distributors but is also available to a lesser extent in Bar Products, Forging Products, Tubular Products, and Wire Products.
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Specifications
The following specifications cover Super Alloy HY MU 80(tm)
- ASTM A753 ALLOY 4
- MIL N-14411 Comp 1
Property Results
Related Metals:
- Hipernom(tm)
- MAG 7904
- MagneSHIELD 24(tm)
- Moly Permalloy(tm)
- Permalloy 80(tm)
Chemistry Data : [top]
Carbon
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Iron
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Balance |
Manganese
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Molybdenum
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Nickel
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Silicon
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Principal Design Features
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This is a high magnetic permeability alloy of nickel and iron.
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Applications
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Transformer core laminations and magnetic shielding.
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Machinability
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This is a high nickel alloy with resultant tendency to "gummy" machining. It behaves in similar manner to the austenitic (300 series) stainless steels. High-speed steel or carbide tools may be used with lard oil lubricant. If water-soluble cutting fluids are used it is important to clean the parts thoroughly immediately after machining to avoid corrosion contamination.
For high-speed steel tooling:
Turning is done at a speed of 50 surface ft./min. and feed of .001" to .002" per revolution.
Drilling is done at a speed of 35 surface ft./min. and feed of .001" to .004" per revolution.
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Forming
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Forming is readily accomplished with standard methods.
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Welding
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Conventional welding methods may be used.
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Heat Treatment
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This alloy is not hardenable by heat treatment. Annealing may be done in a dry hydrogen atmosphere at 2150 F for 4 hours, followed by furnace cooling to 1100 F, then a cooling rate of 500 F per hour from 1100 F to 700 F. Air cool after 700 F.
A strain relief anneal may be done at 1700 F for 1/2 hour in a dry hydrogen or inert gas atmosphere.
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Cold Working
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The alloy has good ductility and is readily cold formed. Strip in the cold rolled condition works best for blanking operations.
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Annealing
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See "Heat Treat".
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Hardening
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Hardens by cold working only.
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Other Physical Props
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Magnetic Properties:
Mu at 40 gauss Mu maximum
Bar, wire for Direct Current: 50,000 200,000
Mu at 40 gauss Mu at 200 gauss Mu at 2000 gauss
Strip, 60 cycle AC
0.025" thick 35,000 40,000 55,000
0.014" thick 55,000 65,000 95,000
o.006" thick 65,000 85,000 135,000
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Other Mechanical Props
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Annealed bar. Other conditions are:
Tensile-ksi Yield-ksi Elong.%
As cold drawn: 97 69 37
1600 F anneal: 90 33 57
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Physical Data : [top]
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Density (lb / cu. in.)
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0.316
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Specific Gravity
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8.74
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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0.118
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Electrical Resistivity (microhm-cm (at 68 Deg F))
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349
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Melting Point (Deg F)
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2650
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Thermal Conductivity
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240
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Mean Coeff Thermal Expansion
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6.89
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Modulus of Elasticity Tension
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33
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Reduction of Area
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70
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
