A335 / SA335 P91 Type 2 Chrome Moly Pipe

as well as Flanges, Fittings & Valves

Applied Alloys is Australia’s premier source for ASTM A335 / SA335 P91 Type 2 Chrome Moly Steel Pipe & WP-91 Fittings, F-91 Flanges, and Valves to suit.

A335 P91 Type 2 / UNS K91560 seamless ferritic alloy-steel pipe for high-temperature service. P91 provides extremely high creep strength and increased oxidation at high temperatures which allow for reduced wall thickness. P91 is suitable for bending, flagging, and similar forming operations and for fusion welding. Full lengths or cut to size for immediate shipping. Other Grades available:  P5,  P9,  P11,  P22,  P92 

Chrome Alloy Seamless Pipe

Seamless ASTM A335 P91 /  ASME SA335  P-91 Type 2  /  UNS # K91560
Forged Bored Pipe Seamless ASTM A369  /  SA369
  • ½”  –  30″  diameter
  • STD, 40, XH, 60, 80, 100, 120, 140, 160, XXH
  • Wall thickness up to 4″ thick

Alloy BW Fittings

ASTM A234 / ASME SA234  WP-91 Type 1&2
  • ½”  –  30″ diameter
  • STD, 40, 60, 80, 100, 120, 140, 160  XXH
  • Wall thickness uo to 4″ thick

Alloy Forged Fittings

ASTM A182 / ASME SA182  F-91 Type 2
  • 3000#  /  6000#  /  9000#
  • Socketweld  &  Threaded
  • Shapes  &  Straights

Alloy Flanges

ASTM A182  /  ASME SA182  /  F-91 Type 2
  • ½”  –  30″
  • 150#  –  1500#
  • Slip-on,  Weld Neck,  Socketweld
  • Threaded  &  Blind
  • Raised Face Ring Type Joint  ( RTJ )

Cast Alloy Steel Specialty Valves

ASTM A217  /  ASME SA217

O-Port Through Conduit, Ball,  Gate,  Globe,  &  Check  Valves

  • WC-6  ( 1 1/4% Chrome )
  • WC-9  ( 2 1/4% Chrome )
  • C-5  ( 5% Chrome )
  • C-12  ( 9% Chrome )
  • C-12  ( 9% Chrome + Vanadium )

Forged Alloy Steel Specialty Valves

ASTM A182  /  ASME SA182  /  F91 Type 2

Gate,  Globe  &  Check Valves

Custom made O-Port Valves

P91 Pipe Chemical Requirements

Carbon, max0.15%
Manganese0.30% - 0.60%
Phosphorus, max0.025%
Sulfur, max0.025%
Silicon, max0.50%
Chromium4.00% - 6.00%
Molybdenum0.45% - 0.65%
Vanadium0.18% - 0.25%
Nitrogen0.030% - 0.070%
Nickel, max0.40%
Aluminum, max0.02%
Columbium0.06% - 0.10%
Titanium, max0.01%
Zirconium, max0.01%

P91 Pipe Specification

Tensile Strength, min, PSI, (MPa)Yield Strength, min, (MPa)
85,000 (585)60,000 (415)

Click HERE to download our PDF

Email your Chrome Moly A335 P91 enquiry to learn more about our inventory