Applied Alloys’ extensive range of special metals includes ASTM A335/SA335 P91 Type 2 chrome-moly steel pipe and WP-91 fittings, F-91 flanges, and corresponding valves.
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 allows for reduced wall thickness. P91 is suitable for bending, flanging, and similar forming operations and for fusion welding. It is available in full lengths or cut to size for immediate shipping. Other grades available: P5, P9, P11, P22, P92
Pipe, Flanges, Fittings & Valves
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 up 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 / F-91 Type 2
- Gate, Globe & Check Valves
- Custom-made O-Port Valves
P91 Pipe Chemical Requirements
| Carbon, max | 0.15% |
| Manganese | 0.30% – 0.60% |
| Phosphorus, max | 0.025% |
| Sulfur, max | 0.025% |
| Silicon, max | 0.50% |
| Chromium | 4.00% – 6.00% |
| Molybdenum | 0.45% – 0.65% |
| Vanadium | 0.18% – 0.25% |
| Nitrogen | 0.030% – 0.070% |
| Nickel, max | 0.40% |
| Aluminum, max | 0.02% |
| Columbium | 0.06% – 0.10% |
| Titanium, max | 0.01% |
| Zirconium, max | 0.01% |
P91 Pipe Specification
| Tensile Strength, min, PSI, (MPa) | Yield Strength, min, (MPa) |
| 85,000 (585) | 60,000 (415) |
