PROPRIETARY AL 6XN PLUS Stainless steels

Material group: Ferrous Alloys / Stainless steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2022-11
Total number of updates: 3
Update History
2022-10 2021-05

This material has 28 properties — only a subset is shown here.

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PROPRIETARY AL 6XN PLUS Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.02
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
21.8
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
0.20
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Fe
VALUE
val1
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UNIT
%
CAS NUMBER
7439-89-6
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
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
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

Allegheny Technologies Incorporated, Product Data Sheets,

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PROPRIETARY AL 6XN PLUS Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 215 GPa
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Density
7.61 — 8.1 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 28 properties — only a subset is shown here.

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PROPRIETARY AL 6XN PLUS Heat Treatments

  • The minimum annealing temperature was established for AL-6XN alloy based upon testing of material of compositions representing the upper and lower specification limits of alloy content. This testing showed that short-term heating to 1065°C (1950°F) dissolved sigma phase precipitates in AL-6XN alloy containing 22% Cr and 7% Mo. Since the composition of AL-6XN PLUS alloy is within this limit, the 1107°C (2025°F) minimum annealing treatment commonly specified is more than adequate for this alloy. AL-6XN PLUS alloy may have slightly higher strength then the conventional AL-6XN alloy, but its formability and weldability are unchanged. The maximum service temperature 427°C (800°F) for AL-6XN alloy in pressure vessel service is administratively mandated. The embrittlement processes observed above 538°C (1000°F) are diffusion controlled, and the minor compositional differences between AL-6XN PLUS alloy and the AL- 6XN alloy will have no influence upon embrittlement susceptibility, etc.

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  • -Cross References
  • 22Composition
  • -Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
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  • -Formability
  • -Fatigue
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  • -Creep
  • -Joints
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