NMX CB7 Cu-2 Cast steels

Material group: Ferrous Alloys / Cast steels
Country / Standard: Mexico / NMX

Data updates

Latest Update: 2021-04
Total number of updates: 2
Update History
2015-02

This material has 49 properties — only a subset is shown here.

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NMX CB7 Cu-2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.07
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
14.00 – 15.50
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
2.50 – 3.20
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Nb
VALUE
val1
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UNIT
%
CAS NUMBER
7440-03-1
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-088: 1987 / Steel Castings, Stainless, Precipitation Hardening

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NMX CB7 Cu-2 Heat Treatments

  • All castings must be given a solution treatment, unless it is ordered in the annealed condition by s solution, should be precipitation hardened. The annealing heat treatment by solution should consist of heating parts and the test material at 1323°K (1050°C) + 30°K (30°C); maintain this temperature 1.2 min/mm section, but not less than 30 minutes, and air cool below 303°K (30°C).The temperature used for precipitation hardening should be kept within the range of + 15°K (+ 15°C). Where a minimum Nb content is specified, the minimum temperature for precipitation hardening should be 768°K (495°C). H900: Precipitation hardening: T = 480°C for 110 min. (cooling in air); H925: Precipitation hardening: T = 495°C for 110 min. (cooling in air); H1025: Precipitation hardening: T = 550°C for 240 min. (cooling in air); H1075: Precipitation hardening: T = 580°C for 240 min. (cooling in air); H1100: Precipitation hardening: T = 595°C for 240 min. (cooling in air); H1150: Precipitation hardening: T = 620°C for 240 min. (cooling in air); H1150M: I- Precipitation hardening: T = 760°C for 60 min. (cooling in air); II - Precipitation hardening: T = 620°C for 240 min. (cooling in air); H1150DBL: Precipitation hardening: T = 620°C for 240 min. (cooling in air).

NMX CB7 Cu-2 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 863 MPa
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Brinell Hardness (HB)
269 — 310
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Elongation, A
≥ 5 %
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Yield Strength, Rp0.2
val1
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MPa
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NMX CB7 Cu-2 International Equivalent Materials

Showing 7 of 9 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
A 747 CB7Cu-2
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
A747 CB7Cu-2
STANDARD
ACI
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-747 CB7Cu-2
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
SA-747 Type 15-5
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
15-5 PH
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
CB7CU2
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit
MATERIAL
J92110
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit

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  • 9Cross References
  • 10Composition
  • 26Mechanical Properties
  • -Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 3Total Suppliers