NMX B-207 Grade B2 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: Mexico / NMX

Data updates

Latest Update: 2015-08
Total number of updates: 1
Update History

This material has 15 properties — only a subset is shown here.

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NMX B-207 Grade B2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.27
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.29 – 0.93
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.048
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

NMX-B-207: 1988 / Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes

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NMX B-207 Grade B2 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 15 properties — only a subset is shown here.

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NMX B-207 Grade B2 Heat Treatments


  • Cold drawn tubes must be heat treated after the last step cold drawn at a temperature of 640°C or higher to ensure adequate ductility in the subsequent rolling and to meet the specified mechanical properties.

NMX B-207 Grade B2 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 413 MPa
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Elongation, A
≥ 30 %
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
≥ 255 MPa
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  • 2Cross References

  • 5Composition
  • 4Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

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