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ASTM A335 P9 alloy steel pipe

ASTM A335 P9 is an alloy heat-resistant steel with high temperature resistance, corrosion resistance, oxidation resistance and good thermal strength.
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  • ASTM A335 P9

Packing of ASTM A335 P9 alloy steel pipe
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test of ASTM A335 P9 alloy steel pipe

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment of ASTM A335 P9 alloy steel pipe

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P9 alloy steel pipe alloy steel pipe Chemical Compositions(%)

CompositionsData
UNS Designa-tionK41545
Carbon(max.)0.15
Manganese0.30-0.60
Phosphorus(max.)0.025
Silicon(max.)0.50
Chromium4.00-6.00
Molybdenum0.45-0.65
Other Elements

Mechanical properties for ASTM A335 P9 alloy steel pipe

PropertiesData
Tensile strength, min, (MPa)415 Mpa
Yield strength, min, (MPa)205 Mpa
Elongation, min, (%), L/T30/20

Material & Manufacture of ASTM A335 P9 alloy steel pipe

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment of ASTM A335 P9 alloy steel pipe

  • A / N+T

  • N+T / Q+T

  • N+T


Mechanical Tests Specified of ASTM A335 P9 alloy steel pipe

  • Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test

  • For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.

  • For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.


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