DIN 1.1740 Tool steels

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

Data updates

Latest Update: 2019-05
Total number of updates: 1
Update History

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DIN 1.1740 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.5500 – 0.6500
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.6000 – 0.8000
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.0350
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 17350: 1980 / Tool Steels; Technical Conditions of Delivery

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DIN 1.1740 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.72 — 8 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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DIN 1.1740 Heat Treatments

  • Normalizing: Heated at 820°C.

    Soft annealing: Slowly heated at 680-710°C for 4 hours, slowly cooled, if possible in the furnace (to at least 500°C).

    Hardening in water: Slowly heated at 770-800°C, quenched in water. The quenching water should be 20-30°C and not colder than 20°C.

    Hardening in oil: Slowly heated at 800-830°C, oil quenched.

    Stress relief annealing: Slowly heated at 600-650°C for 1-2 hours, slowly cooled in furnace.
  • Hardening (quenching in water): 800-830°C; Tempering: 180°C

DIN 1.1740 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 231
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Rockwell Hardness (HR)
52
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  • 20 Cross References
  • 10 Composition
  • 5 Mechanical Properties
  • 4 Physical Properties
  • 6 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 8 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
  • 7 Total Suppliers