| 材料 | 254 SMO/S31254 | 名称： | 对焊接头 |
|---|---|---|---|
| 形状 | 同心异径管 | 类型 | WELD/SMLS |
| 尺寸 | 1/2′nb - 48′nb | 时间安排 | SCH.10S – XXS |
| 强光 | Reducer Butt Weld Fitting， 254 SMO Butt Weld Fitting， Butt Weld Stainless Steel Reducer | ||
254 smo 异径管 A403 S31254-W 不锈钢对焊管件
概述
254 SMO Pipe Fittings are made with a good chemical composition of chromium， molybdenum and nickel. This enables these fittings to exhibit excellent corrosion and oxidation resistance properties in various systems. 254 SMO Butt-weld Fittings have low concentrations of carbon but possess superior mechanical properties. They possess a minimum tensile strength of 551Mpa and a minimum yield strength of 241Mpa. ASTM 403 254 SMO Reducer is used to adapt pipes of different sizes in various piping systems. They are also used in instances when the flow is increased or decreased within the system. They are available either as concentric or eccentric reducers.
254smo steel is a high alloy stainless steel composed of elements such as nickel， molybdenum， chromium， and nitrogen. It has many unique characteristics， making it widely used in many fields. Firstly， 254smo steel has excellent corrosion resistance. It can resist various corrosive media， including sulfuric acid， hydrochloric acid， chloride， etc. This makes it an ideal material choice in fields such as chemical engineering and ocean engineering. Secondly， 254smo steel has excellent oxidation resistance. It can maintain stable performance in high-temperature environments and is not prone to oxidation reactions. This makes it have broad application prospects in high-temperature furnaces， petrochemical and other fields. In addition， 254smo steel has good mechanical properties. It has high strength and hardness， as well as good plasticity and toughness. This enables it to meet the requirements of various complex processes in the manufacturing field. Finally， 254smo steel has good welding performance. It can be processed through various welding methods， and the strength and corrosion resistance of welded joints are excellent. This makes it easy to assemble and install in the engineering field.
Advantages of 254 SMO material:
- Great resistance against pitting corrosion and crevice corrosion， PRE≥42，5
- High resistance against general corrosion and stress corrosion
- Higher durability than conventional austenitic stainless steel types
- 良好的焊接性
254 SMO VS SS316
等级 | SMO 254 | Stainless Steel 316 |
耐腐蚀性 | Excellent resistance to chloride stress corrosion cracking， pitting， and crevice corrosion | Generally more resistant than 304; good in atmospheric environments and many corrosive media |
实力 | Twice that of stainless steel 300 series | Lower than SMO 254 |
机械加工性能 | Difficult due to high work hardening rate and lack of sulfur content | 良好 |
焊接性 | Requires filler materials for good strength properties | 优秀 |
耐热性 | Good up to 1204 °C | Good up to 870 °C |
Hardening | Not responsive to heat treatment | Only possible through cold reduction |
应用 | Saltwater handling， tall oil distillation columns， flue gas desulfurization scrubbers， petroleum production components， food processing equipment， chemical industry process equipment， pulp and paper industry bleaching equipment， flue-gas cleaning， desalination， heat exchangers | Industrial， architectural， and transportation fields; marine environments |
化学成分
254SMO | 倪 | C | 莫 | 锰 | Si | 铁 | 铜 | S | P | Cr |
17.5 - 18.5 | 最大 0.02 | 6 - 6.5 | 1 最大值 | 0.8 最大值 | - | 0.5 - 1 | 0.01 最大值 | 0.03 最大值 | 19.5 - 20.5 |
机械性能
密度 | 熔点 | 屈服强度（0.2%Offset） | 拉伸强度 | 伸长率 |
8.0 克/立方厘米 | 1320-1390 ℃ | 300 | 650 | 35 % |
等效成绩
标准 | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | SIS | 社会变革管理计划 |
254SMO | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | - | 2378 | - |
应用：
- Sea-water systems
- Sea-water cooling
- Cooling water piping
- Ballast water systems
- Fire-extinguishing systems
- Hydraulic and instrumentation hoses
- Equipment in pulp bleaching facilities
- Components for gas cleaning systems
- Tanks and pipes for chemicals with high halide levels
