PROPRIETARY High Permeability 49 Magnetic and electrical materials

Material group: Ferrous Alloys / Magnetic and electrical materials

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2024-01

Total number of updates: 5

Update History

2021-09 2021-07 2021-02 2016-02

This material has 79 properties — only a subset is shown here.

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PROPRIETARY High Permeability 49 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

0.02

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

Balance

UNIT

CAS NUMBER

7439-89-6

CRITERIA

VALUE

0.50

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

Carpenter Technology Corporation, Product Data Sheets,

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PROPRIETARY High Permeability 49 Physical Properties

Temperature

0 - 30°C 100 - 300°C

PROPERTY / VALUE

Modulus of Elasticity

152 — 210 GPa

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Electrical Resistivity

0.48 Ω∙mm²/m

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Density

val1 kg/dm³

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Heat Capacity

val1 J/(kg∙°C)

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Melting Temperature

val1 °C

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Thermal Conductivity

13 W/(m∙°C)

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Electrical Conductivity

val1 S/m

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Poisson Coefficient

val1

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Torsional Modulus

val1 GPa

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This material has 79 properties — only a subset is shown here.

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PROPRIETARY High Permeability 49 Heat Treatments

Annealing
Standard hydrogen anneal
For maximum softness and optimum magnetic and electrical properties, High Permeability 49 should be annealed in an oxygen-free, dry hydrogen atmosphere with a dew point below -40°C (-40°F) for 2 to 4 hours at 1177°C (2150°F), followed by a furnace cool at a rate of 55/111°C (100/200°F) per hour down to 427°C (800°F) and at any rate thereafter.
Oil, grease, lacquer, and any other contaminants must be removed before annealing. During hydrogen annealing, the individual parts should be separated by a surface insulation media or an inert insulating powder, such as magnesium or aluminum oxide.
Stress relieving
To relieve all strains and restore the alloy to a soft condition suitable for drawing, spinning, forming, bending, and similar operations, anneal for not more than 1 hour at 788/871°C (1450/1600°F).
Since high-nickel, high permeability alloys readily absorb carbon, sulfur, oxygen, and other contaminants from combustion furnace gasses, in-process annealing should be done in a hydrogen or inert gas atmosphere.

PROPRIETARY High Permeability 49 Mechanical Properties

Temperature

0 - 30°C ≥ 300°C

PROPERTY / VALUE

Tensile Strength

483 — 896 MPa

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Elongation, A

5 — 45 %

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Yield Strength, Rp0.2

val1 MPa

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Impact Energy

val1 J

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Reduction of Area

val1 %

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Rockwell Hardness (HR)

val1

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PROPRIETARY High Permeability 49 International Equivalent Materials

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MATERIAL

STANDARD

COUNTRY / PRODUCER

EQUIVALENCE CATEGORY

MATERIAL

K94840

STANDARD

UNS

COUNTRY / PRODUCER

United States

EQUIVALENCE CATEGORY

Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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2Cross References

5Composition
42Mechanical Properties
20Physical Properties
1Heat Treatment
-Metallography
-Machinability

6Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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