| 标准： | astm a312， asme sa312 | 材料等级： | TP304， TP304L |
|---|---|---|---|
| 外径： | 6 毫米-630 毫米或定制 | 厚度 | 0.4-30 毫米 |
| 长度 | 6 米或定制 | 类型 | 无缝，焊接 |
| 形状 | 圆形 | 应用： | 装饰，建筑，锅炉，燃油和燃气，电 |
| 强光 | 无缝不锈钢管， 无缝锅炉管 | ||
ASTM A312 TP304， TP304L Stainless Steel For Chemical Industry
ASTM A312 TP304 / 304L stainless steel pipe is the most versatile and most commonly used stainless steel on the market. And these grades are austenitic chromium alloy， also known as “18/8” stainless steel， because the composition of the steel is 18% chromium and 8% nickel.
ASTM A312 TP304 and TP304L are both grades of stainless steel that are specifically designed for use in the chemical industry. These grades offer excellent corrosion resistance and high strength， making them suitable for a wide range of chemical processes.The ASTM A312 specification covers seamless， straight-seam welded， and heavily cold-worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. TP304 and TP304L are the most commonly used grades for in this specification.
材料等级：
| SS304 / H / L / N / LN | |
| AISI | 304 / 304H / 304L / 304N / 304LN |
| UNS | S30400 / S30409 / S30403 / S30451 / S30453 |
| Werkstoff Nr. | 1.4301 / 1.4306 / 1.4948 / 1.4311 |
化学成分
| % | C | 锰 | Si | P | S | Cr | 倪 | N | |
| SS304 | 分钟 | – | – | – | – | – | 18.0 | 8.0 | – |
| 最大 | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | |
| SS304L | 分钟 | – | – | – | – | – | 18.0 | 8.0 | – |
| 最大 | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | |
机械性能
| 等级 | 最小拉伸强度（兆帕 | 屈服强度 0.2% 抗压强度（兆帕） min | 伸长率（%，50 毫米）最小值 | 硬度 | |
| 洛氏 B (HR B) 最大值 | 最大布氏硬度 (HB) | ||||
| SS304 | 515 | 205 | 40 | 92 | 201 |
| SS304L | 485 | 170 | 40 | 92 | 201 |
应用：
化学工业
石油和天然气行业
Offshore Plant
水处理系统
石化工业
Heat Exchangers & Boilers & Condensers
食品加工厂
