DIN 1.6740 Cast steels

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

Data updates

Latest Update: 2019-06
Total number of updates: 3
Update History
2018-12 2016-04

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DIN 1.6740 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.3000 – 0.3600
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.9000 – 1.2000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.5000 – 0.8000
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

DIN 17205: 1992 / Quenched and tempered steel castings for general applications; technical delivery conditions

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DIN 1.6740 Heat Treatments


  • Normalized at 880-920°C until the core reaches this temperature. Subsequently, they have to cool down in stationary atmosphere
    Quenched at 880-920°C homogeneously and thoroughly to the quenching temperature
    Tempered at 530-670°C
    Surface hardened at 900-950°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
  • Air Quenched and Tempered Hardening: 880-920°C; Tempering: 600-650°C Liquid Quenched and Tempered (I) Hardening: 880-920°C; Tempering: 600-650°C Liquid Quenched and Tempered (II) Hardening: 880-920°C; Tempering: 500-50°C

DIN 1.6740 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
750 — 1250 MPa
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Elongation, A
≥ 9 %
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Impact Energy
val1
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J
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
≥ 550 MPa
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DIN 1.6740 International Equivalent Materials


Showing 3 of 3 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Identical
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
SEW
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Identical

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 3Cross References

  • 16Composition
  • 28Mechanical Properties
  • -Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • 15Fatigue
  • -Fracture
  • -Creep

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

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

  • 3Total Suppliers