标准: | ASTM A234 | 材料等级: | WPB-S |
---|---|---|---|
类型 | 肘部 | 无损检测: | RT, MT |
强光 | 不锈钢管件, 不锈钢管件 |
ASTM A234 WPB-S ELBOW 45/90 DEGREE CARBON STEEL B16.9 BLACK PAINTING
Steel elbow is used to be installed between two lengths of pipe or tube allowing a change of direction,usually these carbon steel elbows distinguished by connection ends, The ends may be machined for butt welding , threaded , or socketed , so the carbon steel elbows are consist of butt weld,thread elbow socket elbow and other series.the material is selected according to the application use such as high temperature use,sanitary fitting,regular industrial use etc.
- ASTM A234 fittings material consist of killed steel, forgings, bars, plates, seamless or HFW (fusion welded) pipe products, with filler metal added.
- ASTM A234 standard covers steel fittings of seamless and welded types. ASTM A234 Pipe fittings are applied in pressure pipelines and in pressure vessel fabrications.
- ASTM A234 / A234M-07 Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
ASTM A234 范围:
- 本规范适用于 ASME B16.9、B16.11、MSS-SP-79、MSS-SP-83 和 MSS-SP-95 的最新修订版所涵盖的碳钢和合金钢锻制无缝和焊接接头。这些接头用于压力管道和压力容器制造,可在中温和高温下使用。与这些 ASME 和 MSS 标准不同的接头应按照规范 A 960/A 960M 的补充要求 S58 提供。
- 对于需要更严格检验的配件,还提供了可选的补充要求。如有需要,可在订单中指定一项或多项补充要求。
- 本规范不包括铸造焊接接头或由铸件加工而成的接头。铸钢焊接接头受规范 A 216/A 216M 和 A 217/A 217M 的约束。
- 本规格既有英制磅单位,也有国际单位制单位。但是,除非订单中指定了适用的 "M "规格名称(SI 单位),否则应按英制磅单位提供材料。
- 以英制单位或国际单位表示的数值应分别视为标准值。在文中,SI 单位用括号标出。每个系统中的数值并非完全等同;因此,每个系统都必须独立使用。将两个系统的数值合并使用可能导致不符合规范。
Chemical Composition (%) of ASTM A234:
等级 | C | 锰 | P | S | Si | Cr | 莫 | 倪 | 铜 | V | Nb |
WPB | 0.3 | 0.29-1.06 | 0.05 | 0.058 | 0.1 分钟 | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
木塑 | 0.35 | 0.29-1.06 | 0.05 | 0.058 | 0.1 分钟 | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
WP11 CL1 | 0.05-0.15 | 0.30-0.60 | 0.03 | 0.03 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – | – | – | – |
WP11 CL2/3 | 0.05-0.20 | 0.30-0.80 | 0.04 | 0.04 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – | – | – | – |
备注
- For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
- The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
- The sum of Cr and Mo shall not exceed 0.32%.
- The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
ASTM A234 的机械性能:
拉伸要求 | WPB | WPC, WP11CL2 | WP11CL1 | WP11CL3 |
拉伸强度,最小值,ksi[兆帕] | 60-85 | 70-95 | 60-85 | 75-100 |
(0.2% 偏移或 0.5% 负载扩展)。 | [415-585] | [485-655] | [415-585] | [520-690] |
屈服强度,最小值,ksi[兆帕] | 32 | 40 | 30 | 45 |
[240] | [275] | [205] | [310] |
Where the wall thickness lies between two values above, the min elongation value is determined by the following equations:
- Longitudinal E=48t+15.00
- Transverse E=32t+10.00
- E = elongation in 2in [50mm], %
- t = actual thickness of specimen, in [mm]