Xi'an New Force Energy Engineering Co.,Ltd
Competitive Price Reliable Quality On Time Delivery Timely Service
Add to Cart
High Pressure Boiler Tube Alloy Steel ASTM A335 P92 56'' 1422mm x 140mm
In order to improve the heat efficiency of reheating steam pipeline in power plant, the reheating-temperature can be designed as high as 621°C, which is known as the super-critical temperature. The Unite States firstly developed ASTM A335 P92 alloy steel in late 1980’s to meet the heat-resisting requirements of such a high-temperature power unit. The alloy steel P92 is an improved version of ASTM A335 P91 alloy which has deliberate addition of tungsten, vanadium, niobium, decreased amount of molybdenum to fine-tune to ferrite/austenite ratio, as well as carefully controlled amount of boron and nitrogen.
1. Standards
ASTM A335 ——Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
2. Application
For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.
3. Dimensional Tolerance
| Pipe types | OD (mm) | Tolerance | WT (mm) | Tolerance |
| High Pressure Boiler Tube | 219~457 | ±1.0% | ≤20 | -10% ~ +12.5% |
| 20~40 | -10% +10% | |||
| 457~1422 | ±0.9% | ＞40~70 | -7%, +9% | |
| ＞70~20 | -6%, +8% |
5. Chemical Composition:
| Grade | UNS Designation | Composition, % | |||||||||
| C | Mn | P | S | Si | Cr | Mo | Ni | V | Others | ||
| P92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.02 | 0.01 | 0.50 max | 8.50-9.50 | 0.30-0.60 | 0.4 | 0.15-0.25 | N 0.03-0.07 |
| Al 0.02 max | |||||||||||
| Cb 0.04-0.09 | |||||||||||
| W 1.5-2.00 | |||||||||||
| B 0.001-0.006 | |||||||||||
| Ti 0.01 max | |||||||||||
| Zr 0.01 max | |||||||||||
6. Mechanical Properties
| Steel pipes No. | Tensile strength | Yield strength | Elongation | Impact energy | Hardness |
| (Mpa) | (Mpa) | (%) | (J) | ||
| P92 | ≥620 | ≥440 | ≥20 | ≥35 | ≤250HB |
7. Available Size Range:
| OD | Thickness | ||
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed above, please contact us for further information. | |||
MTC sample would be provided upon request.
For additional requirements on chemical composition, mechanical properties or supplementary requirements, please contact us for customization!
