| 标准： | ASTM A335 | 材料 | P9 |
|---|---|---|---|
| 产品名称 | High Temperature Service Tube | 结束： | 平端/斜端 |
| 类型 | 无缝 | 形状 | 圆形 |
| 尺寸 | 定制 | 长度 | 定制 |
| 强光 | Alloy Steel Seamless Tube High Temperature， P9 Seamless Alloy Steel Tube， ASTM A335 Alloy Steel Tube | ||
ASTM A335 P9 Alloy Steel Seamless Tube For High Temperature Service
概述
ASTM A335 P9 is a specific grade of seamless ferritic alloy-steel pipe that is commonly used for high-temperature service. It is designed to withstand elevated temperatures and provide excellent creep and stress rupture strength. The "P" in the designation indicates that it is a pressure vessel grade， and the number "9" represents its chromium content.ASTM A335 P9 offers good resistance to oxidation， corrosion， and high-temperature creep. It is commonly used in power generation， petrochemical， and refinery applications where high-temperature and high-pressure conditions are present.
Chemical Composition of ASTM A335 P9
| 等级 | 莫 | Cr | Si | 锰 | C | P | S | |
| P9 | 最小 | 0.9 | 8.0 | 0.25 | 0.3 | |||
| 最大 | 1.1 | 10.0 | 1.00 | 0.6 | 0.15 | 0.025 | 0.025 |
Mechanical Properies of ASTM A335 P9
| 等级 | 拉伸强度 Ksi（兆帕） | 屈服强度 Ksi（兆帕） | 伸长率（%） |
| P9 | ≥60(415) | ≥30(205) | ≥30 |
ASTM A335 外径公差
| NPS(DN) 代号 | 完毕 | 根据 | ||
| 中。 | 毫米 | 中。 | 毫米 | |
| 1/8 至 1 1/2(6 至 40)，包括... | 1/64(0.015) | 0.40 | 1/64(0.015) | 0.40 |
| 超过 1 1/2 至 4（40 至 100），包括 | 1//32(0.031) | 0.79 | 1/32(0.031) | 0.79 |
| 超过 4 至 8（100 至 200），包括 | 1/16(0.062) | 1.59 | 1/32(0.031) | 0.79 |
| 超过 8 至 12（200 至 300），包括 | 3/32(0.093) | 2.38 | 1/32(0.031) | 0.79 |
The Application of ASTM A335 P9
- 1.Power generation: It is used in power plants for high-temperature steam pipelines， boiler tubes， and superheater tubes.
- 2.Petrochemical industry: ASTM A335 P9 finds applications in the petrochemical industry for high-temperature pipelines， heat exchangers， and process piping systems.
- 3.Refinery applications: It is used in refineries for hydrocarbon processing units， such as cracking units， cokers， and reformers.
- 4.Chemical industry: ASTM A335 P9 is suitable for various chemical processing applications where high-temperature and corrosion resistance are essential.
- 5.Heat recovery steam generators (HRSGs): It is employed in HRSGs， which are used to recover waste heat from gas turbines for power generation.
- 6.High-pressure boiler systems: ASTM A335 P9 is commonly used in high-pressure boiler systems for its strength and resistance to high temperatures.
