| 标准： | 美国材料试验协会 A213/ASME SA213 | 材料等级： | TP321 / S32100 / SUS 321 |
|---|---|---|---|
| 第三方检查： | BV，SGS，ASP | 类型 | 无缝/焊接 |
| 表面： | 光亮退火 | 证书 | ABS，GL，DNV，NK，PED，AD2000，GOST9941-81，CCS，ISO 9001-2008 |
| 强光 | astm a213 smls tube， amse sa213 tp321 smls tube， s32100 bright annealed tube | ||
A213 TP321 uns S32100 光亮退火不锈钢无缝管
概述
TP321 is a stable stainless steel. Its main advantage is that it has excellent resistance to intergranular corrosion after exposure to the chromium carbide precipitation temperature range of 800 ° F to 1500 ° F (427 ° C to 816 ° C). The 321 stainless steel pipe can stably form chromium carbide by adding titanium.
321 stainless steel is a titanium stabilized version of 304 for specific applications within the sensitization temperature range. Its anti-sensitization ability and its high strength at high temperature make it suitable for applications where 304 will be sensitized or 304L thermal strength is insufficient. When exposed to a slightly corrosive environment， there will be no intergranular corrosion of weld corrosion. However， welding 321 must not be used in a highly oxidizing environment because it is vulnerable to "knife line" erosion. However， 321 is a better choice in the working temperature environment of more than 500 ° C， so it has its own advantages. 321 stainless steel pipe is also conducive to high-temperature use due to its good mechanical properties. 321 stainless steel has higher creep and stress fracture properties than alloy 304， especially alloy 304L can also be considered for sensitive and intergranular corrosion problems.
321 stainless steel is basically made of 304 stainless steel. The difference between them is that very little titanium is added. The real difference is their carbon content. The higher the carbon content， the greater the yield strength. 321 stainless steel has advantages in high-temperature environments due to its excellent mechanical properties. Compared to SS304， 321 stainless steel has better ductility and stress fracture resistance. In addition， 304L can also be used to resist sensitization and intergranular corrosion.
化学成分
Mat. | C | Si | 锰 | P | S | Cr | 倪 | Ti |
|---|---|---|---|---|---|---|---|---|
| 321 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 17.0/19.0 | 9.0/12.0 | 5 X C 最小值 - 0.70 最大值 |
材料等级：
| 美国标准 | 奥氏体钢： TP304，TP304L，TP304H，TP304N， TP310S，TP316，TP316L，TP316Ti，TP316H，TP317，TP317L，TP321，TP321H，TP347，TP347H，904L... 双相钢 ： S32101，S32205，S31803，S32304，S32750， S32760 其他TP405，TP409，TP410，TP430，TP439，... |
| 欧洲标准 | 1.4301，1.4307，1.4948，1.4541，1.4878，1.4550，1.4401，1.4404，1.4571，1.4438， 1.4841，1.4845，1.4539，1.4162， 1.4462， 1.4362， 1.4410， 1.4501 |
尺寸 范围:
| 生产 | 外径 | 壁厚 |
| 换热管 | 6.00 毫米至 101.6 毫米 | 0.5 毫米至 8 毫米 |
Quality tests:
| 腐蚀测试 | 仅在客户特别要求时进行 |
| 化学分析 | 按照规定的质量标准进行测试 |
| 破坏性/机械测试 | 拉伸 | 硬度 | 压平 | 扩口 | 法兰 |
| 反向弯曲和反向平面测试 | 完全符合相关标准和 ASTM A-450 和 A-530 规范，可确保无故障膨胀、焊接和客户端使用 |
| 涡流测试 | 利用数字瑕疵标记检测系统检测地下的均匀性 |
| 水压试验 | 100% 静水压力测试根据 ASTM-A 450 标准进行，用于检查管子的泄漏情况，我们可支持的最大压力为 20Mpa/7s。 |
| 空气压力测试 | 检查是否有漏气迹象 |
| 目视检查 | 经过钝化处理后，每根管材都要由经过培训的员工进行彻底的目视检查，以发现表面缺陷和其他瑕疵。 |
Supplementary Tests:
Apart from the above mentioned tests， we also carry out on the manufactured products supplementary testing.
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