UNS S30403 Seamless Pipes
S30403 stainless steel pipe is a stainless steel material with good corrosion resistance and excellent mechanical properties. It is widely used in chemical industry, petroleum, food processing and other fields.
S30403 stainless steel pipe, also known as 304L stainless steel pipe, is based on 304 stainless steel and reduces the carbon content, thereby improving weldability. Its main performance features include: S30403 stainless acid-resistant steel pipe has excellent corrosion resistance and can resist corrosion from general atmosphere, water vapor, fresh water and alkaline salt solutions, so it is widely used in chemical industry, petroleum and other fields. S30403 SS Thin Wall Pipe is easy to process and form, and can be made into pipes of various specifications through cold drawing, cold rolling, etc. to meet the needs of different projects. Due to the reduced carbon content, S30403 Stainless Steel Clad Pipe is not prone to welding heat affected zone corrosion during welding, has good welding performance, and is suitable for various welding processes.
Stainless Steel UNS S30403 Pipes Equivalent Grades
| Grade | 304L | |
| UNS No | S30403 | |
| Old British | BS | 304S11 |
| En | 58E | |
| Euronorm | No | 1.4306 / 1.4307 |
| Name | X5CrNi18-10 | |
| Swedish SS | 2332 | |
| Japanese JIS | SUS 304L | |
S30403 UNS Pipes Chemical Composition
| Grade | UNS S30403 | |
|---|---|---|
| min | max | |
| C | – | 0.03 |
| Mn | – | 2.0 |
| Si | – | 1.00 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 18.0 | 20.0 |
| Mo | – | – |
| Ni | 8.0 | 12.0 |
| N | – | – |
Stainless Steel UNS S30403 Seamless Pipes
s30403 is made of stainless steel.
Austenitic thin-walled stainless steel pipes and fittings material grades:
Brand (unified digital code): new 022Cr19Ni10 (S30403), old 00Cr19Ni10 (304L type)
The allowable chloride content in the delivery water is ≤mg/L: cold water ≤40℃: 200, hot water >40℃: 50.
Hardness Stainless steel pipes generally use three hardness indicators: Brinell, Rockwell, and Vickers to measure their hardness.
Brinell hardness Among stainless steel pipe standards, Brinell hardness is the most widely used. The indentation diameter is often used to express the hardness of the material, which is both intuitive and convenient. But it is not suitable for steel pipes made of harder or thinner steel.
Rockwell hardness: The Rockwell hardness test of stainless steel pipe is the same as the Brinell hardness test, which is an indentation test method. Among them, HRC is second only to Brinell hardness HB in steel pipe standards.
Rockwell hardness can be used to measure metal materials from extremely soft to extremely hard. It makes up for the shortcomings of the Brinell method. It is simpler than the Brinell method and the hardness value can be read directly from the dial of the hardness machine.
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