DTD 740 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: United Kingdom / DTD

Data updates

Latest Update: 2020-09
Total number of updates: 1
Update History

This material has 14 properties — only a subset is shown here.

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DTD 740 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
B
VALUE
0.0015 – 0.0050
UNIT
%
CAS NUMBER
7440-42-8
CRITERIA
C
VALUE
0.10 – 0.16
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.4 – 0.7
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

D.T.D. 740: 1955 / 40-Ton Molybdenum - Boron Steel Tubes (Suitable for welding)

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DTD 740 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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This material has 14 properties — only a subset is shown here.

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DTD 740 Heat Treatments


  • Tubes shall be supplied in the normalized and tempered condition.
    Tubes shall be heated uniformly at a temperature within the range 930-980°C and cooled freely in air.

DTD 740 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 618 MPa
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Brinell Hardness (HB)
≥ 183
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Yield Strength, Rp0.2
≥ 463 MPa
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  • -Cross References

  • 7Composition
  • 3Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • -Total Suppliers