| 规格 | A403 WP347H 90 Degree Elbow Stainless Steel Pipe Fitting | 形状 | 肘部 |
|---|---|---|---|
| 连接： | 焊接 | 申请： | 连接管道 |
| 表面处理： | 热浸镀锌和冷镀锌 | 颜色 | 银色 |
| 关键词： | Pipe Fitting，90 Degree Elbow | ||
| 强光 | A403 WP347H 90 Degree Elbow， A403 WP347H Steel Pipe Fittings， SS304 90 Degree Elbow | ||
SS Pipe Fittings， 347H stainless steel pipe fittings， A403 347H Stainless Steel Buttweld Fittings manufacturers， SA 403 WP 347H， A403 WP347H， ASTM A403 gr WP347H， A403 WP347H Elbow， Stainless Steel ASTM A403 WP347H Pipe Fittings suppliers， WP347H Buttweld Fittings suppliers， A403 347H Fittings manufacturers in India， UNS S34709 pipe fittings suppliers
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ASTM A403 is a balanced， austenitic， chromium steel containing columbium which takes into consideration the end of carbide precipitation， and thus intergranular corrosion.
ASTM A403 is balanced out by the increases of chromium and tantalum and offers higher creep and stress rupture properties than A304 and A304L， which may also be utilized for exposures where sensitization and intergranular corrosion are of concern.The expansion of columbium likewise permits ASTM A403 to have outstanding corrosion resistance， better than that of A321. ASTM A403H is the higher carbon composition form of ASTM A403 and display enhanced high temperature and creep properties.
特点
- 与 304 相比，蠕变应力和断裂性能更高
- 适用于高温环境
- 克服敏化和晶间腐蚀问题
- 可用于高温应用
- 与 304/304L 相比，这种材料由于经过稳定化处理，整体耐腐蚀性能更好
ASTM A403 WP347 Fittings buttweld stainless steel pipe fittings that are weldable onto the pipes they need to fit on. There are different types， forms and shapes of fittings available. The functions include changing the direction of fluid flow， reducing the diameter of the pipeline， joining two fluid flow lines together and splitting a line into two. The A403 WP347 Elbow functions to change the direction of fluid flow but is more abrupt than the bend. ASTM A403 gr WP347 fittings vary in shape and function such as the union， adapter， double-tapped bushing， coupling and valves. A403 WP347 material is austenitic stainless steel specialized for pressure pipes.
ASTM A403 WP347H Chemical Composition
| 要素 | 347 | 347H |
| 铬 | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| 镍 | 9.00 min.-13.00 max. | 9.00 min.-13.00 max. |
| 碳 | 0.08 | 0.04 最小值 -0.10 最大值 |
| 锰 | 2 | 2 |
| 磷 | 0.045 | 0.045 |
| 硫磺 | 0.03 | 0.03 |
| 硅 | 0.75 | 0.75 |
| 铌和钽 | 10 x (C + N) min.-1.00 max. | 8 x (C + N) min.-1.00 max. |
| 铁 | 平衡 | 平衡 |
ASTM A403 WP347H Mechanical Properties
| 等级 | 347 / 347H |
| 最小拉伸强度（兆帕 | 515 |
| 屈服强度 0.2% 抗压强度（兆帕） min | 205 |
| 伸长率（%，50 毫米）最小值 | 40 |
| 硬度 | |
| 洛氏 B (HR B) 最大值 | 92 |
| 最大布氏硬度 (HB) | 201 |
耐腐蚀性
347H stainless steel plate displays good general corrosion resistance that is similar to TP304. It was produced for use in the chromium carbide precipitation scope by 800 – 1500°F (427 – 816°C) where unbalanced alloys such as SS304 are subject to intergranular attack. In this temperature scope， the overall corrosion resistance of Alloy 347 stainless steel plate is better than TP321 stainless steel plate. 347H additionally performs somewhat superior to TP321 in strongly oxidizing situations up to 1500°F (816°C). The alloy can be utilized as a part of nitric solutions; most diluted organic acids at moderate temperatures and in pure phosphoric acid at lower temperatures and up to 10% diluted solutions at high temperatures. 347H stainless steel plate resists polythionic acid stress corrosion cracking in hydrocarbon service. It can also be used in chloride or fluoride free caustic solutions at moderate temperatures. 347H stainless steel plate doesn’t perform well in chloride solutions， even in small concentrations， or in sulfuric acid.
应用
- 石油
- 化学
- 机械
- 锅炉
- 电力
- 造船业
- 造纸
- 建筑
