DIN 1.1730 Tool steels

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

Data updates

Latest Update: 2023-10
Total number of updates: 3
Update History
2019-04 2018-09

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DIN 1.1730 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.42 – 0.50
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.60 – 0.80
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.030
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

EN ISO 4957: 2018 / Tool steels

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DIN 1.1730 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Shear Modulus
val1
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GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
50 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.12 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 464 properties — only a subset is shown here.

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DIN 1.1730 Heat Treatments

  • Normalizing: Heated at 850°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 800-830°C, quenched in water. The quenching water should be 20-30°C and not colder than 20°C.

    Hardening in oil: Slowly heated at 820-850°C, oil quenched.

    Stress relief annealing: Slowly heated at 600-650°C for 1-2 hours, slowly cooled in furnace.
  • Austenitized at 810 +/- 10°C and water quenched.
    Tempered at 180 +/- 10°C.

DIN 1.1730 Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
≤ 207
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Rockwell Hardness (HR)
35
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  • 189 Cross References
  • 15 Composition
  • 16 Mechanical Properties
  • 27 Physical Properties
  • 9 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • 14 Dimensions
  • 2 Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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