| Specification: | ASTM A335 P22 Alloy Stainless Steels | Application: | Boiler Pipe， Chemical Fertilizer Pipe， Structure Pipe |
|---|---|---|---|
| Technique: | Hot Rolled | Surface Treatment: | Black Painted |
| Shape: | Round | Certification: | ISO，SGS，BV，ISO & SGS，ISO/CE/SGS |
| Length: | 6 Meters Or Customized | Package: | Standard Seaworthy Package |
| High Light: | ASTM A335 Alloy Steel Seamless Tubes， P22 Alloy Steel Seamless Tubes， Hot rolled Alloy Steel Seamless Tubes | ||
ASTM A335 P22 Alloy Stainless Steels
We are one of the biggest manufactures of stainless steel & duplex steel & alloy steel tubes and pipes in China. With development more than 20 years， we have accumulated a great many clients all around the world and TONG CHUANG products also won the great praise among the customers.
What is ASTM a335?
ASME SA335 / ASTM A335 ， Chrome-Moly pipe is a seamless ferritic Alloy-Steel Pipe produced in nominal or minimum wall thickness for high temperature service. Pipe ordered to this specification shall be suitable for bending， flanging， similar forming operations and for fusion welding.
What is p22 material?
A335/SA335 Grade P22 Alloy Steel are Carbon steel pipes with addition of chromium， molybdenum， and sometimes vanadium. Chromium， or chrome， improves high-temperature strength， increases oxidation resistance and raises the tensile， yield and hardness at room temperatures.
P22 Pipe Chemical Requirements
| C， % | Mn， % | P， % | S， % | Si， % | Cr， % | Mo， % |
| 0.015 max | 0.30-0.61 | 0.025 max | 0.025 max | 0.50 max | 1.90-2.60 | 0.87-1.13 |
P22 Pipe Mechanical Properties
| Tensile Strength， MPa | Yield Strength， MPa | Elongation， % |
| 415 min | 205 min | 30 min |
ASTM A335 Gr P22 Equivalent Material
| ASTM | ASME | Equivalent material | JIS G 3458 | UNS | BS | DIN | ISO | ABS | NK | LRS |
| A335 P22 | SA335 P22 | T22， 10CrMo910， 10CrMo9-10， 1.7380， 11CrMo9-10， 1.7383 | STPA 24 | K21590 | 3604 P1 622 | 17175 10CrMo910 | 2604 II TS34 | ABS 13 | KSTPA 24 | Sec 22-1/4Cr1Mo410 |
Heat Treatment Requirements
| P5， P9， P11， and P22 | |||
| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering Temperature Range F [C] |
| P5 (b，c) | Full or Isothermal Anneal | ||
| Normalize and Temper | 1250 [675] | ||
| Subcritical Anneal (P5c only) | 1325 – 1375 [715 – 745] | ||
| P9 | Full or Isothermal Anneal | ||
| Normalize and Temper | 1250 [675] | ||
| P11 | Full or Isothermal Anneal | ||
| Normalize and Temper | 1200 [650] | ||
| P22 | Full or Isothermal Anneal | ||
| Normalize and Temper | 1250 [675] | ||
| P91 | Normalize and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
| Quench and Temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Tensile Requirements
| Seamless | ASTM A335 P5 | ASTM A335 P9 | ASTM A335 P11 | ASTM A335 P22 | ASTM A335 P91 |
| Tensile Strength， min.， psi | |||||
| ksi | 60 | 60 | 60 | 60 | 85 |
| MPa | 415 | 415 | 415 | 415 | 585 |
| Yield Strength， min.， psi | |||||
| ksi | 30 | 30 | 30 | 30 | 60 |
| MPa | 205 | 205 | 205 | 205 | 415 |
Application
- Pharmaceutical equipment
- Chemical equipment
- Sea water equipment
- Heat exchangers
- Condensers
- Pulp and paper industry
- Off-shore oil drilling companies
- Power generation
- Petrochemicals
- Gas processing
- Specialty chemicals
