DIN 1.7231 Cast steels

Material group: Ferrous Alloys / Cast steels
Country/Standard: Germany / DIN

Data updates

Latest Update: 2018-12
Total number of updates: 4
Update History
2017-01 2014-04 2014-02

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DIN 1.7231 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.38 – 0.45
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.80 – 1.20
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
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

EN 10293: 2015 / Steel castings for general engineering uses

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This material has 462 properties — only a subset is shown here.

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DIN 1.7231 Heat Treatments

  • Normalized at 850-880°C until the core reaches this temperature. Subsequently, they have to cool down in stationary atmosphere
    Quenched at 830-860°C homogeneously and thoroughly to the quenching temperature
    Tempered at 530-670°C
    Surface hardened at 820-890°C by suitable gas burners or by eddy currents to this temperatures. Quenching is usually carried out in water. In order to reduce the risk of cracking, mildly acting quenchants can be used. If possible, immediately after surface hardening, a stress relief heat treatment shall be made at 140-180°C. The duration of stress relieving depends on the wall thickness. It should be at least 1 hour
  • Quenched and tempered: (+QT1) quenched from 880 to 950°C, cooled in liquid (for information only) and tempered from 600 to 650°C;
    (+QT2) Quenched from 880 to 950°C, cooled in liquid (for information only) and tempered from 550 to 600°C.

DIN 1.7231 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
350 MPa
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Tensile Strength
650 — 1000 MPa
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Elongation, A
10 %
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Impact Energy
val1
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J
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Rockwell Hardness (HR)
val1
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  • 239 Cross References
  • 17 Composition
  • 20 Mechanical Properties
  • - Physical Properties
  • 2 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • - Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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