AFCEN 20 NCD 14-7 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels

Country / Standard: France / AFCEN

Data updates

Latest Update: 2024-02

Total number of updates: 4

Update History

2022-01 2018-07 2015-10

This material has 83 properties — only a subset is shown here.

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AFCEN 20 NCD 14-7 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

≤ 0.030

UNIT

CAS NUMBER

7429-90-5

CRITERIA

VALUE

≤ 0.23

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

1.50 – 2.00

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-50-8

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-02-0

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

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

M 2321: RCC-M II: 2024 / PWR reactor coolant pump disk flywheels made from nickel-chromium-molybdenum alloy steel plate

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AFCEN 20 NCD 14-7 Physical Properties

Temperature

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

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Thermal Conductivity

val1 W/(m∙°C)

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Density

val1 kg/dm³

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Poisson Coefficient

val1

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Coefficient of Thermal Expansion (CTE)

val1 10^-6/°C

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This material has 83 properties — only a subset is shown here.

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AFCEN 20 NCD 14-7 Heat Treatments

Homogenizing heat treatment between 900°C and 1000°C;
Heat treatment for mechanical properties:
- Austenitizing at a temperature between 840°C and 870°C,
- Quenching by immersion in water,
- Tempering at a temperature selected so as to obtain the required properties, followed by still air cooling.
Nominal holding temperature for tempering shall be between 620°C and 670°C. Holding time shall be selected depending on plate thickness, on the minimum basis of 0.5h for every 25 mm thickness.
Homogenizing heat treatment between 900°C and 1000°C;
Heat treatment for mechanical properties:
- Austenitizing (at a temperature between 840°C and 870°C),
- Quenching by immersion in water,
- Tempering at a temperature selected so as to obtain the required properties, followed by still air cooling.
Nominal holding temperature for tempering shall be between 620°C and 670°C. Holding time shall be selected depending on plate thickness, on the minimum basis of 0.5h for every 25 mm thickness.

AFCEN 20 NCD 14-7 Mechanical Properties

Temperature

≤ 0°C 0 - 30°C 30 - 100°C 100 - 300°C

PROPERTY / VALUE

Tensile Strength

750 — 900 MPa

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Elongation, A

val1 %

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Yield Strength, Rp0.2

val1 MPa

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Impact Energy

val1 J

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-Cross References

22Composition
16Mechanical Properties
41Physical Properties
2Heat Treatment
-Metallography
-Machinability

2Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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