Metalfort Inc.

We Are the Leading manufacturer & exporter of HyMu® 80 in Guiqing, Xianggang

We manufactures and exports high quality HyMu® 80 in Guiqing Xianggang. Learn more about our products.

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HyMu® 80

Are you looking for a high-quality and reliable supplier of HyMu® 80 in Guiqing, Xianggang? Look no further! As a leading HyMu® 80 manufacturer, we Metal Fort, take pride in offering a wide range of premium HyMu® 80 products to meet your diverse needs in Guiqing, Xianggang. Our HyMu® 80 is meticulously crafted using state-of-the-art technology and adheres to the highest industry standards, ensuring exceptional durability, corrosion resistance, and longevity. Whether you require HyMu® 80 products, sheets, bars, or fittings, we have you covered. Our experienced team is committed to providing excellent customer service, assisting you in finding the perfect HyMu® 80 solutions for your projects in Guiqing, Xianggang. With our competitive prices and prompt delivery, you can trust us to be your trusted partner for all your stainless steel requirements. Experience the unmatched quality and reliability of our HyMu® 80 products and elevate your projects to new heights. Contact us today and let us be your go-to HyMu® 80 supplier in Guiqing, Xianggang!

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Introducing the finest HyMu® 80 products, crafted with precision and durability for Guiqing, Xianggang’s diverse needs. We Metal Fort stands as a trusted leader in HyMu® 80 manufacturing in Guiqing, Xianggang, offering an extensive range of high-quality products that meet the highest industry standards. Whether you're in construction, engineering, or manufacturing, our HyMu® 80 solutions are tailored to elevate your projects to new heights. From corrosion-resistant pipes and fittings to sleek and stylish sheets and bars, we provide the perfect blend of strength, reliability, and aesthetic appeal. Our HyMu® 80 is meticulously crafted, ensuring exceptional performance in even the harshest environments. Partner with us for unmatched expertise, prompt delivery in Guiqing, Xianggang, and competitive prices. Choose the HyMu® 80 experts and experience the difference that quality makes in Guiqing, Xianggang.

HyMu 80 alloy is an unoriented, 80% nickel-iron-molybdenum alloy which offers extremely high initial permeability as well as maximum permeability with minimum hysteresis loss.

Applications

HyMu 80 alloy has been used primarily in transformer cores, tape wound toroids and laminations where compactness and weight factors are important. It has also been used for shielding to protect electrical components from stray magnetic fields.

Corrosion Resistance

This alloy is moderately resistant to moisture and atmospheric corrosion.

Physical Properties

Specific gravity ............................ 8.74
Density
lb/cu in ......................................... 0.316
kg/cu m ......................................... 8747
Thermal conductivity
Btu-in/ft²/hr/°F ................................. 240
W/m þ K ......................................... 34.6

Electrical resistivity
ohm c/mft ..................................... 349
microhm-mm ................................ 580
Temperature coefficient of
electrical resistivity
per °F (0 to 930°F) ................... 0.0006
per °C (-17.8 to 449°C) .............. 0.0011

Mean Coefficient of Thermal Expansion

Test Temparature

Coefficient

°F

°C

10(-6)/°F

10(-6)/°C

-103 to 77
-58 to 77
-11 to 77
77 to 122
77 to 212
77 to 392
77 to 572
77 to 752

-75 to 25
-50 to 25
-25 to 25
25 to 50
25 to 100
25 to 200
25 to 300
25 to 400

6.0
5.94
5.78
6.83
6.89
7.09
7.22
7.39

10.8
10.7
10.4
12.30
12.40
12.76
13.00
13.30

Curie temperature
°F ............................................. 860
°C ............................................ 460
Melting Point
°F............................................. 2650
°C............................................ 1454

Specific Heat
Btu/lb-°F ........................................... 0.118
kJ/kg-K ............................................. 0.494

Magnetic Properties

Coercive Force
from H = 1.0 Oe,
Oersted.................... 0.008 to 0.02

Hysteresis loss
from H = 1.0 Oe, erg/cubic cm
per cycle................................ 18 to 24

DC Magnetic Properties

Form

Mu at B = 40 G

Mu max

Hc from H = 1 Oersted

Bar, Wire

50,000

200,000

0.02 max

DC Hysteresis loss
from H = 1.0 Oe, erg/cubic cm
per cycle .................................. 16
Induction, gauss .................. 7300

Residual Induction, gauss
(Split strip or split
rod specimens) ................................. 3500

AC Magnetic Properties, 60 Hz
Minimum limits

Thickness

Mu 40 G

Mu 200 G

Mu 2000 G

Inches

Millimeters

0.025(1)
0.014(1)
0.006(1)
0.002(2)

0.635
0.356
0.152
0.051

35,000
55,000
65,000
70,000

40,000
65,000
85,000
90,000

55,000
95,000
135,000
220,000

Heat Treatment

In-process anneal
To relieve all strains and restore the alloy to a soft condition suitable for drawing, spinning, forming, bending or similar operations, anneal at 1450/1850°F (788/1010°C) for not more than 1 hour. Since the high nickel, high permeability alloys readily absorb carbon, sulfur, oxygen and other contaminants from combustion furnace gasses, in-process annealing should be conducted in dissociated ammonia, hydrogen, vacuum or inert gas atmospheres.

Hydrogen anneal
For maximum softness and optimum magnetic and electrical properties, HyMu 80 alloy should be annealed in an oxygen-free, dry hydrogen atmosphere with a dew point below -40°F at 2050/2150°F for 2 to 4 hours. Furnace cool to 1100°F. From 1100 to 700°F, cool at rate between 350 to 600°F per hour.
Oil, grease, lacquer and all other contaminants must be removed before annealing. The individual parts should be seperated by an inert insulating powder such as magnesium and aluminum oxide during hydrogen annealing.
Vacuum heat treating can be employed. Generally, there is some small sacrifice in magnetic properties compared to heat treating in a dry hydrogen atmosphere.

Machining
The following chart reports data compiled from various machining operations performed on HyMu 80 alloy using the high-speed tool materials indicated. When using carbide tools, double the sf/m shown in the chart.

Operation

Speed

Feed

Tool
Material

sf/m

m/s

l/r

mm/r

Turning
Drilling
Milling
Tapping

50
35
40
10/15

0.254
0.18
0.20
0.05/0.08

0.0007/0.002
0.001/0.004
0.002/0.005
--------

0.018/0.051
0.025/0.102
0.051/0.127
--------

M42
M42
M2
M1 or M2

Figures used for all metal removal operations covered are average. On certain work, the nature of the part may require adjustment of the speeds and feeds. Each job has to be developed for best production results with optimum tool life. Speeds and feeds should be increased or decreased in small steps.
HyMu 80 alloy machines somewhat like the austenitic stainless alloys but doesn't work harden as rapidly. Gummy chips develop in most machining operations. Work hardened bars (Rockwell B 90 minimum) offer the best machining characteristics.
Lard oil should be used for drilling and machining operations which must be done at slow speeds. If sulfur-bearing and water-soluble cutting compounds are used, the parts should be thoroughly cleaned within 48 hours, then heat treated. High speed steel or carbide tools are suggested for cutting operations.

Cold forming
For best blanking characteristics, HyMu 80 alloy strip should be ordered in the cold rolled condition (Rockwell B 90 minimum). For best forming characteristics, strip should be ordered in the cold rolled and annealed condition. For best drawing characteristics, strip orders should be endorsed "annealed, deep draw quality".

Welding
HyMu 80 alloy is readily welded by following the usual pracitices for ferrous alloys. If a filler metal is required, use the same analysis. Finish annealed parts can be soft or hard soldered. Do not braze or solder prior to final heat treatment.

Shielding Properties

Because of its very high permeability and very low coercive force, HyMu 80 alloy is particularly well suited for magnetic shielding applications.
Annealed, deep draw quality strip can be fabricated into shields by bending, drawing and spinning. Where joining is required, spot welding or tungsten inert-gas welding can be used, with or without a base metal filler rod.
To develop the best shielding characteristics, shields must be annealed at 1900°F or higher (as described in the heat treatment section) after all fabricating operations have been completed. In general, higher annealing temperatures yield higher permeability and better shielding characteristics.
To determine its relative shielding capability, a material is evaluated as an open-ended cylindrical shield in a uniform magnetic field, such as that produced by a Helmholtz coil. When a pickup unit is centered in the field of the coil, the attenuation (A) is the ratio of the reading with no shield (E1)to that obtained when a shield is positioned over the pickup (E2), with its axis perpendicular to the field (A=E1/E2).
This is a measure of the shielding effectiveness under the particular test conditions, and for a given material depends upon the shield thickness, its length-to-diameter ratio and the diameter of the Helmholzt coil.

Typical Mechanical Properties

Bar

Tensile
Strength

Yield
Strength

Proportional
limit

%
Elongation

%
Reduction
in Area

Hardness
Rb

ksi

MPa

ksi

MPa

ksi

MPa

---------------------------------As Cold Drawn----------------------------------

97

669

69

414

19

131

37

71

97

----------------As Hydrogen Annealed at 2050°F(1121°C)-----------------

79

545

22

152

19

131

64

70

62

------------------After Process Anneal at 1600°F(871°C)-------------------

90

620

33

228

28

193

57

74

85

Modulus of Elasticity
(in tension)

Izod Impact

10(3)ksi

10(6)MPa

ft-lb

J

---------------------------------As Cold Drawn----------------------------------

33.7

232

120

163

----------------As Hydrogen Annealed at 2050°F(1121°C)-----------------

33.3

230

85

115

------------------After Process Anneal at 1600°F(871°C)-------------------

31.4

217

85

115

Strip

Tensile
Strength

Yield
Strength

Proportional
limit

%
Elongation

Hardness
Rb

ksi

MPa

ksi

MPa

ksi

MPa

---------------------------------As Cold Rolled----------------------------------

135

931

--

--

--

--

4

100

----------------As Hydrogen Annealed at 2050°F(1121°C)-----------------

77

531

21

145

15

103

38

58

------------------After Process Anneal at 1600°F(871°C)-------------------

98

676

38

262

35

241

38

85

Application Specifications

HyMu 80 alloy meets military specification Mil-N-14411 B and ASTM-A-753-78 standard specification.

Product Ratings & Reviews

4.4/5
Based on 150 reviews
Finnley Wolf

1 year ago

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Thanks

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1 year ago

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1 year ago

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1 year ago

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1 year ago

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1 year ago

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1 year ago

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