A 744 Grade CN3MCu (United States / ASTM) Material Properties

Material group: Ferrous Alloys / Cast steels
Country/Standard: United States / ASTM

Data updates

Latest Update: 2014-10
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 170 MPa view details
Tensile Strength 425 MPa view details
Elongation, A 35 % view details
Yield Strength, Rp0.2 24.7 ksi view details
Tensile Strength 61.6 ksi view details
Elongation, A 35 % view details

Physical Properties

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Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.03
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
19.0 – 22.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
3.0 – 3.5
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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

A744/A744M: 2021 / Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

Heat Treatments

  • Heat to 1120°C (2050°F) min, hold for sufficient time to heat casting to temperature, quench in water or rapid cool by other means.