Stainless Steel 304H UNS S30409 Pipes
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S30409 stainless steel pipe is a commonly used austenitic stainless steel material with good corrosion resistance and processing performance. It is widely used in petroleum, chemical industry, food, medicine, medical equipment and other fields.
The chemical composition of S30409 stainless steel round pipe mainly includes iron, chromium, nickel, carbon, silicon, manganese and other elements. Among them, the content of chromium is between 18% and 20%, the content of nickel is between 8% and 11%, and the content of carbon is generally less than 0.08%. In addition, S30409 stainless steel also contains small amounts of titanium and nitrogen to improve the material's stability and corrosion resistance.
The organizational structure of cold-drawn S30409 stainless steel pipe is mainly composed of austenite matrix and a small amount of carbides. The structure of the austenite matrix is relatively stable, not prone to oxidation and corrosion, and also has good toughness and ductility. The presence of carbides can improve the hardness and wear resistance of the material.
Stainless Steel UNS S30409 Pipes Equivalent Grades
| Grade | 304H | |
| UNS No | S30409 | |
| Old British | BS | 304S11 |
| En | 58E | |
| Euronorm | No | 1.4948 |
| Name | X5CrNi18-10 | |
| Swedish SS | 2332 | |
| Japanese JIS | SUS 304H | |
304H Stainless Steel Pipes and Tubes Physical Properties
Grade |
Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Stainless Steel UNS S30409 Seamless Pipes
S30409 stainless steel has excellent mechanical properties and has good strength, toughness and ductility. Its tensile strength is generally above 520MPa, its yield strength is around 210MPa, and its elongation is above 40%.
Processing performance:
SS UNS S30409 Seamless Pipes have good processing properties and can be used for cutting, bending, welding and other processing operations. At the same time, because of its good toughness and ductility, it is not prone to cracks and fractures during cold working.
Gnee company covers an area of 35,000 square meters and has more than 200 employees, including 80 technical staff. We have established an effective and complete quality control and assurance system. The company has also obtained ISO9001 quality system certification.
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