ASTM A312 TP304H Stainless Steel Seamless Pipe / SS Pipe 304H S30409 Stainless Steel Pipe
| Product | TP304H S30409 Stainless steel pipe |
| Material Grade | 201 202 304 304L 304H 309S 310S 316 316L 317L 321 347 904L .etc |
| Standard | ASTM,AISI, ASME ,SUS,JIS,EN,DIN,BS,GB .etc |
| Certification | ISO,SGS, BV |
| Brand | JISCO, LISCO, TISCO ,BAO STEEL POSCO/ ZPSS .etc |
| Shape | Round, Square, Rectangular, Oval, Slotted, Embossed, etc. |
|
SIZE
| DN10 - DN400 |
| Wall Thickness : SCH10 - XXS |
| Length: 6m or as your requirement
|
| Tolerance | a) Outer Diameter: +/- 0.2mm |
| b) Thickness: +/- 0.02mm |
| c) Length: +/- 5mm |
| Surface | Pickled finishing |
| Technique | seamless pipe |
| Payment terms | L/C TT |
| Application | industrial area |
| Package | Standard export packing or as per customer’s request. |
| Deliver time | 5-10 days according to quantity |
Grade Informations of 304H stainless steel
Alloy 304/304H (UNS S30400/ S30409) is a modification of the most widely utilized "18-8" chromium-nickel austenitic stainless steel. The carbon content is controlled in the range of 0.04-0.10% for increased strength at temperatures above 800°F (427°C). It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications.
It is common practice for 304H to be dual certified as 304 and 304H. The high carbon chemistry of 304H enables 304 to meet the mechanical properties and grain size requirements of 304H.
Alloy 304/304H has general corrosion resistance similar to 304/304L. It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, Alloy 304/304H is subject to carbide precipitation in the heat affected zone of welds.
Alloy 304/304H is non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices.
Applications of 304H stainless steel
- Chemical and Petrochemical Processing-pressure vessels, tanks, heat exchangers, piping systems, flanges, fittings, valves and pumps
- Petroleum Refining
Chemical Analysis of 304 and 304H stainless steel
Weight % (all values are maximum unless a range is otherwise indicated)
| Element | 304 | 304H |
| Chromium | 18.0 min.-20.0 max. | 18.0 min.-20.0 max. |
| Nickel | 8.0 min.-10.5 max. | 8.0 min.-10.5 max. |
| Carbon | 0.08 | 0.04 min-0.10 max. |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfer | 0.030 | 0.030 |
| Silicon | 0.75 | 0.75 |
| Nitrogen | 0.10 | 0.10 |
Products List
- stainless steel sheet /plate
- Stainless steel coil
- Stainless steel pipe/tube
- Stainless steel bar/rod
- Stainless steel square/angle bar
- Galvanized steel sheet/plate
- Galvanized steel coil
- Galvanized steel pipe/tube
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