DIN 1.7386 + NT Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Germany / DIN

Data updates

Latest Update: 2022-01
Total number of updates: 5
Update History
2020-03 2019-09 2014-04 2014-03

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DIN 1.7386 + NT Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.040
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.08 – 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
8.0 – 10.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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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
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

EN 10216-2: 2024 / Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties

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DIN 1.7386 + NT Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Dynamic Modulus of Elasticity
218 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
val1
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This material has 467 properties — only a subset is shown here.

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DIN 1.7386 + NT Heat Treatments

  • Quenching and tempering: Hardened at 960-1000°C, cooled in air, quenched in oil or water.

    Tempering: Heated at 730-780°C, held for min. 60 minutes.

    Normalizing and tempering: Heated at 890-950°C, air cooled. Tempered at 720-800°C. br />
    Material can be hot and cold formed. Hot forming should be carried out at 1100-850°C. Forming operations such as forging and upsetting are carried out between 1100°C and 950°C.
  • Normalizing and tempering (+NT): 890-950°C, air cooling. Tempering: 720-800°C, air cooling. It may be necessary in the case of wall thickness T above 10 mm or T/D > 0.15 to apply quenching and tempering in order to achieve the intended structure and material properties.

DIN 1.7386 + NT Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
390 MPa
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Tensile Strength
590 — 740 MPa
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Elongation, A
16 %
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Impact Energy
val1
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J
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  • 101 Cross References
  • 27 Composition
  • 65 Mechanical Properties
  • 10 Physical Properties
  • 3 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • 2 Creep
  • - Joints
  • - Coatings
  • 174 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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