ASTM A335 P91 Alloy Steel Seamless Pipe

• Type: Seamless
• Technique: Hot Rolled
• Material: Alloy Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: KM-20201106
• Size: 1/2"~12"
• Thickness: 2~20mm
• Standards: ASTM A335
• Materials: P1 P2 P5 P11 P12 P91
• Packaging: in Bundles or in Wooden Boxes
• Delivery Time: 45~60 Days
• Transport Package: Bundles or Seaworthy Wooden Cases
• Specification: ASTM A335
• Trademark: Kingmetal
• Origin: China
• HS Code: 7304519090
• Production Capacity: 1000 Ton/Month

Product Description

ASTM A335 P91 Alloy Steel Seamless Pipe

Grade: P91
UNS #: K91560
Pipe: A335/SA335
Forged/Bored Pipe: A369/SA369
Length: Specific or random

1) Pipe Diameter: 1/2"-12"
2) Thickness: 2mm-20mm
3) Steel grade: P1 P2 P5 P11 P12 P91
4) Surface: Oiled or black painted to prevent rust
5) Marking: As per customer's requirement
6) Packing: Bundles or seaworthy wooden cases

Chemical Composition (%)

Grade

C

Si

Mn

P

S

Cr

Mo

Cu

Ni

V

Al

W

Nb

N

P91

0.08~0.12

0.2~0.5

0.3~0.6

≤ 0.02

≤ 0.01

8.0~9.5

0.85~1.05

≤ 0.4

0.18~0.25

≤ 0.015

0.06~0.10

0.03~0.07

Mechanical Properties

Grade

Tensile strength(MPa)

Yield strength(MPa)

Elongation(%)

Impact energy(J)

Hardness

P91

585~760

≥ 415

≥ 20

≥ 35

≤ 250HB

A335/SA335 P91 is suitable for bending, flanging (vanstoning), and similar forming operations and for fusion welding. P91 is most commonly used in the power industry and petrochemical plants where fluids and gases are transported at extremely high temperatures and pressures.
P91's strength and high temperature endurance makes it ideally suitable for plants that operate on a cyclic basis - like combined cycle plants. Also, the reduction in thickness suits HRSG designers, in an HRSG the temperature head is limited and locating the coils in the heat transfer path is very critical.
P91 is the correct grade for:

• Power generation
• Petrochemicals
• Gas processing
• Petrochemical Plants
• Heaters
• Oilfield services