PROPRIETARY Chrome Core 12-FM 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: 3

Update History

2021-08 2016-02

This material has 33 properties — only a subset is shown here.

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PROPRIETARY Chrome Core 12-FM Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.03

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

11.50 – 12.50

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

Balance

UNIT

CAS NUMBER

7439-89-6

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7723-14-0

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-21-3

Carpenter Technology Corporation, Product Data Sheets,

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PROPRIETARY Chrome Core 12-FM Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Electrical Resistivity

0.57 Ω∙mm²/m

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Density

7.667 — 7.8 kg/dm³

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Electrical Conductivity

val1 S/m

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Heat Capacity

val1 J/(kg∙°C)

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Poisson Coefficient

val1

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This material has 33 properties — only a subset is shown here.

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PROPRIETARY Chrome Core 12-FM Heat Treatments

Due to its relatively low chromium content, will form austenite if heated to too high a temperature, and some hardening will occur if the austentized part is rapidly cooled. Consequently, the best heat treatment for improved soft magnetic properties is to subcritically anneal.
Annealing: At a temperature of 800 ± 14°C (1472 ± 25°F) for 2 to 4 hours. The cooling rate after the anneal is not critical, although rapid cooling and quenching may induce stresses that impair the magnetic characteristics.
Any inert annealing atmosphere such as vacuum, inert gases, or dry forming gas is satisfactory. Attempts to decarburize the alloy using a wet hydrogen atmosphere are not recommended. Similar heat treating practices can be used to soften the alloy for further forming.
Cold working: Will withstand less cold working than the non-free machining versions and is not recommended for parts produced by large amounts of cold deformation.

PROPRIETARY Chrome Core 12-FM Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Tensile Strength

421 MPa

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Elongation, A

40 %

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Reduction of Area

val1 %

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Rockwell Hardness (HR)

val1

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Yield Strength, Rp0.2

228 MPa

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-Cross References

8Composition
5Mechanical Properties
17Physical Properties
1Heat Treatment
-Metallography
-Machinability

1Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
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