Type 304H, in contrast to 304L, has a larger carbon content, making it more suited for usage in applications with high temperatures. Because of the higher carbon content, the austenitic chromium-nickel steel alloy has higher tensile and yield strengths.
Due to the grade’s heat-resistant qualities, the material is advised for use in ASME pressure vessels in operating service above 525 0C.
advantages of 304H stainless steel
• Materials with a higher carbon content are more heat resistant.
• Greater yield tensile strength
• Increased long-term and short-term creep resistance.
The Stainless Steel 304H Pipes are frequently used in industrial boilers, pressure vessels, heat exchangers, pipelines, condensers, and the gas and chemical industries. The substance is also utilized by the entire power generation sector. Stockist of stainless steel DIN 1.4301 seamless tubes, UNS S30409 seamless tubing, 304H cold drawn tubes, JIS SUS 304H seamless tubes, and 304H seamless tubing in India.
Pipes & Tubes Made of 304H Stainless Steel Dimensions:
All pipes are produced, examined, and tested in accordance with the necessary standards, such as ASTM, ASME, and API, among others.
Corrosion Resistance 304H Stainless Steel Pipes and Tubes
Excellent in a variety of corrosive media and atmospheric situations. Subject to stress corrosion cracking above roughly 600C as well as pitting and crevice corrosion in warm chloride conditions. Considered to be resistant to potable water containing up to 200 mg/L of chlorides at room temperature, which drops to 150 mg/L at 600 C.
Heat Resistance 304H Stainless Steel Pipes and Tubes
Excellent oxidation resistance in continuous service at 9250C and intermittent service up to 8700C. It is not advised to use 304 continuously in the 425-8600C range if water corrosion resistance is crucial later on. Grade 304L can be heated to the aforementioned temperatures and is more resistant to carbide precipitation.
Grade 304H is frequently used for structural and pressure-containing applications at temperatures above approximately 5000C and up to approximately 8000C because it has greater strength at high temperatures. In the temperature range of 425-8600C, 304H will become sensitized; this is not a concern for high temperature applications, but it will result in decreased aqueous corrosion resistance.
Heat Treatment for 304H Stainless Steel Pipes and Tubes
Solution Treatment (Annealing): Heat to between 1010 and 1200 °C and quickly cool. Thermal treatment cannot be used to harden these grades.
Packing for 304H Stainless Steel Pipe and Tube 304H Stainless Steel Seamless Pipes and Tubes are individually packed in plastic bags, covered with water-resistant material, and tied together with nylon rope. The quantity and product identifier are clearly marked on the outside of the package for convenience. During operation and transit, great attention is given. SS To prevent any damage, 304H ASTM A312, ASTM A213, ASTM A269, ASTM A249, and ASTM A358 Seamless Pipe will be packed in accordance with international standards in bundles strapped by strips before being placed into containers.
