ASTM A 335 Grade P128 Stainless steels

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

Data updates

Latest Update: 2022-05
Total number of updates: 1
Update History

This material has 60 properties — only a subset is shown here.

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ASTM A 335 Grade P128 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.02
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
B
VALUE
0.008 – 0.015
UNIT
%
CAS NUMBER
7440-42-8
CRITERIA
C
VALUE
0.12 – 0.17
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
val1
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UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
val1
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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
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
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
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

A335/A335M: 2026 / Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

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ASTM A 335 Grade P128 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 60 properties — only a subset is shown here.

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ASTM A 335 Grade P128 Heat Treatments


  • Normalized in range 1080 - 1170°C (1975 - 2140°F), air cooled and tempered in range 760 - 800°C (1400 - 1470°F).
    It is recommended that the temperature for tempering should be at least 50°C (100°F) above the intended service temperature; consequently, the purchaser should advise the manufacturer if the service temperature is to be over 600°C (1100°F).
    After weld repair, shall be heat treated at 760 - 800°C (1400 - 1470°F).

ASTM A 335 Grade P128 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 650 MPa
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Brinell Hardness (HB)
≤ 265
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Elongation, A
≥ 12 %
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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Yield Strength, Rp0.2
val1
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MPa
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ASTM A 335 Grade P128 International Equivalent Materials


Showing 3 of 4 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%

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  • 4Cross References

  • 16Composition
  • 17Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • 1Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • 18Dimensions
  • -Tribology

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

  • -Total Suppliers