AFNOR NF Z 6 CNDU 20.08 M Cast steels

Material group: Ferrous Alloys / Cast steels
Country / Standard: France / AFNOR NF

Data updates

Latest Update: 2021-08
Total number of updates: 5
Update History
2021-01 2020-12 2020-05 2015-12

This material has 58 properties — only a subset is shown here.

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AFNOR NF Z 6 CNDU 20.08 M Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.08
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
19.0 – 23.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
1.00 – 2.00
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

NF A 32-060: 1988 / Foundry products - Cast steel and nickel alloy castings for pumps, valves and fittings (enclosures and internal components)

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AFNOR NF Z 6 CNDU 20.08 M Physical Properties


Temperature

PROPERTY / VALUE
Thermal Conductivity
17 W/(m∙°C)
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Density
7.9 kg/dm³
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Heat Capacity
val1
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J/(kg∙°C)
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Melting Temperature
val1
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°C
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Service Temperature
val1
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°C
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This material has 58 properties — only a subset is shown here.

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AFNOR NF Z 6 CNDU 20.08 M Heat Treatments


  • Heat treated at 1100-1150°C.
  • Hyperquenched (Hy): at 1120°C minimum, after dissolving at high temperature, it is important to allow the parts to homogenize between 1010 and 1060°C before cooling. Possibility of age hardening by treatment between 480°C and 510°C after quenching, making it possible to achieve a hardness of 280 to 320 HBS, but to the detriment of the corrosion resistance, which is optimal after hardening.

AFNOR NF Z 6 CNDU 20.08 M Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
600 — 800 MPa
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Brinell Hardness (HB)
180 — 260
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Elongation, A
≥ 15 %
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Impact Strength
val1
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kJ/m²
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Yield Strength, Rp0.2
val1
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MPa
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Impact Energy
val1
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J
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Yield Strength, Rp1
val1
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MPa
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AFNOR NF Z 6 CNDU 20.08 M International Equivalent Materials


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MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Composition 100%

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  • 2Cross References

  • 28Composition
  • 16Mechanical Properties
  • 9Physical Properties
  • 3Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

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