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ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe

ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe

  • ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe
  • ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe
  • ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe
ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe
Productdetails:
Plaats van herkomst: China
Merknaam: YUHONG
Certificering: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Modelnummer: De Naadloze buis van het de Legeringsstaal van ASTM A335 P9
Betalen & Verzenden Algemene voorwaarden:
Min. bestelaantal: 500 kg
Verpakking Details: BUNDEL, TRIPLEXcomputer-aided software engineering
Levertijd: 7 Dagen
Betalingscondities: L/C,T/T
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Gedetailleerde productomschrijving
Naam van het product: De Naadloze buis van het legeringsstaal Standaard: ASTM A335 / ASME SA335
Materiaal: Gr. P5, P9, P11, P12, P21, P22, P91 Een overdosis.: 1/2" TOT 24" of groter
Lange: Eenvoudig willekeurig, dubbel willekeurig en snijlengte Dikte: SCH.5S- SCH.XXS
Einde: Plain-end, gebogen-end
Markeren:

Cr-Mo Alloy Steel Seamless Pipe

,

ASTM A335 Seamless Alloy Pipe

,

UNS S50400 Seamless Alloy Steel Pipe

ASTM A335 / ASME SA335 Grade P9 / UNS S50400 Alloy Steel Seamless Pipe Black Painted
 

 

ASTM A335 P9 is a seamless, chromium-molybdenum alloy steel pipe designed for high-temperature and high-pressure applications. With 8–10% chromium and 0.9–1.1% molybdenum, it offers exceptional resistance to oxidation, creep, and thermal stress at temperatures up to 650°C (1,200°F). It is widely used in critical environments like power plant steam lines, oil refineries, petrochemical processing, and boiler systems where long-term reliability under extreme conditions is essential. P9 requires specialized welding/preheat treatment but outperforms lower-grade alloys in demanding industrial settings.

 

 

Equivalent Material ​of ASTM A335/ASME SA335 Alloy Steel Seamless Pipe

UNS ASTM EN DIN JIS GB
K50400 P9 12Cr9Mo X12CrMo91 STBA26 /

 

 

Chemical composition(%) of ASTM A335/ASME SA335 Alloy Steel Seamless Pipe

Grade C Mn P≤ S≤ Si≤ Cr Mo
P11 .05-0.15 0.30-0.60 0.025 0.025 .50-1.00 1.00-1.50 .44-0.65
P22 .05-0.16 0.30-0.60 0.025 0.025 ≤0.50 1.90-2.60 .87-1.13
P5 ≤0.15 0.30-0.60 0.025 0.025 ≤0.50 4.00-6.00 .45-0.65
P9 ≤0.15 0.30-0.60 0.025 0.025 .25-1.00 8.00-10.00 .90-1.10
P91 0.08-0.12 0.30-0.60 0.020/0.010 0.020/0.010 .02-0.50 8.00-9.50 .85-1.05
P92 0.07-0.13 0.30-0.60 0.020/0.010 0.020/0.010 ≤0.50 8.50-9.50 .30-0.60

 

 

Advantages:

  • Superior creep strength under sustained high temps.

  • Oxidation/sulfidation resistance (due to Cr content).

  • Good weldability (requires pre/post-weld heat treatment).

 

 

Mechanical Property of ASTM A335/ASME SA335 Alloy Steel Seamless Pipe

Steel Grade Tensile Strength, Mpa Yield Strength, Mpa Elongation, %
P5 Min: 415 Min: 205 Min: 30
P9 Min: 415 Min: 205 Min: 30
P11 Min: 415 Min: 205 Min: 30
P12 Min: 415 Min: 205 Min: 30
P22 Min: 415 Min: 205 Min: 30
P91 Min: 415 Min: 415 Min: 20
 

 

Application

  1. Power Plants: Superheaters, reheaters, high-temp steam lines.

  2. Oil & Gas: Refinery piping, catalytic cracker units, hydrogen service.

  3. Petrochemical: High-pressure/temperature process pipelines.

  4. Boilers: Critical pressure parts in fossil-fuel boilers.

 

 
ASTM A335 / ASME SA335 P9 / UNS S50400 Cr-Mo Alloy Steel Seamless Pipe 0

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