NMX B-180 Grade 4 Structural and constructional steels

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

Data updates

Latest Update: 2018-07
Total number of updates: 2
Update History
2015-03

This material has 30 properties — only a subset is shown here.

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NMX B-180 Grade 4 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
0.04 – 0.30
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.12
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.44 – 1.01
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
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
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

NMX-B-180: 1991 / Seamless and Welded Steel Pipe for Low-Temperature Service

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NMX B-180 Grade 4 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 30 properties — only a subset is shown here.

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NMX B-180 Grade 4 Heat Treatments

  • Normalized and tempered: Heat to a uniform temperature of min. 816°C, cooled in air and subsequently reheating to a suitable tempering temperature. Only for seamless pipes, reheat and control the final temperature of process in a range of 845 C to 945°C and cooled in a controlled atmosphere furnace, followed by tempering Seamless pipe Grades 1, 6 and 10 may be heat treated by uniform heating to a temperature not less than 815°C followed by quenching in a liquid bath and subsequently reheating to a suitable tempering temperature, in rather than any of the other heat treatments described in the preceding paragraphs Quenched and tempered: Heated to a uniform temperature of 800°C ± 15°C, and maintaining this temperature for a min. of 2 minutes/in. of thickness or one hour per 25.4 mm thick (not less than 15 minutes) and quenching by immersion in circulating water. Reheat the tubes to reach a uniform temperature between 565°C and 605°C, maintaining this temperature for a time of 2 minutes /mm thick or one hour per 25.4 mm thick (not less than 15 minutes) and cooled in air or water at a rate not less than 165°C/h. Double normalized and tempered: Heated to a uniform temperature of 900°C ± 15°C, and maintain this temperature for a min. of 2 minutes/ in. of thickness, or one hour per 25.4 mm thick (not less than 15 minutes) and cooled in air. Heating again until the tubes reach a uniform temperature of 790°C ± 15°C, holding this temperature for a min. of 2 minutes/mm thick or one hour per 25.4 mm (not less than 15 minutes) and cooled in air. Finally reheated to a uniform temperature of 565°C to 605°C, and maintain this temperature for a min. of 2 minutes/mm thick, or one hour per 25.4 mm (not less than 15 minutes), and cooled in air or water at a speed not less than 165°C/h.

NMX B-180 Grade 4 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 415 MPa
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Elongation, A
≥ 16.5 %
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Yield Strength, Rp0.2
≥ 240 MPa
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NMX B-180 Grade 4 International Equivalent Materials

Showing 2 of 5 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
SA-333 Grade 4
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
Class 4
STANDARD
GOST
COUNTRY / PRODUCER
Russia
EQUIVALENCE CATEGORY
Composition 100%

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  • 5Cross References
  • 9Composition
  • 12Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • -Total Suppliers