DIN 1.0408 Structural and constructional steels

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

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DIN 1.0408 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.21
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.40 – 1.10
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.025
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 10305-1: 2016 / Steel tubes for precision applications - Technical delivery conditions - Part 1: Seamless cold drawn tubes

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DIN 1.0408 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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DIN 1.0408 Heat Treatments

  • Cold finished (hard) (BK): Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation; Cold finished (soft) (BKW): The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding); Cold finished and stress-relieved (BKS): Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree; Annealed (GBK): The last cold forming process is followed by annealing in a controlled atmosphere; Normalized (NBK): The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

DIN 1.0408 Mechanical Properties


Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
240 MPa
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Tensile Strength
390 — 570 MPa
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Elongation, A
5 %
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  • 18 Composition
  • 33 Mechanical Properties
  • 3 Physical Properties
  • 1 Heat Treatment
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