AFNOR NF 1.7720 Cast steels

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

Data updates

Latest Update: 2020-12
Total number of updates: 3
Update History
2015-09 2014-04

AFNOR NF 1.7720 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.10 – 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.30 – 0.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
≤ 0.30
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
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
CRITERIA
Sn
VALUE
val1
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UNIT
%
CAS NUMBER
7440-31-5
CRITERIA
V
VALUE
val1
Full data available with free access View Complete Material Data
UNIT
%
CAS NUMBER
7440-62-2

EN 10213: 2007 / Steel castings for pressure purposes

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AFNOR NF 1.7720 Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Density 7.85 kg/dm³ Unlock full details
Heat Capacity 460 J/(kg∙°C) Unlock full details

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AFNOR NF 1.7720 Heat Treatments

  • +QT: 950-1000°C, quenched by air or liquid; Tempered at 680-720°C.
  • Quenching (liquid or air cooling): 950-1000°C Tempering: 680-720°C.

AFNOR NF 1.7720 Mechanical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 295 MPa Unlock full details
Tensile Strength 510 — 660 MPa Unlock full details
Elongation, A 17 % Unlock full details
Impact Energy val1
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J Unlock full details

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  • 42 Cross References
  • 29 Composition
  • 30 Mechanical Properties
  • 4 Physical Properties
  • 3 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 136 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
  • 40 Total Suppliers