Specifications:

Wr. 1.4948, AISI 304H, UNS S30409

Material description:

304H steel is an austenitic chromium-nickel material widely used in various contexts thanks to its excellent workability, corrosion resistance, and numerous surface treatment options, such as final polishing, grinding, or brushing.

Thanks to its higher carbon content compared to grade 1.4301, 304H 1.4948 offers excellent heat resistance at high temperatures. However, AISI 304H exhibits limited resistance to intergranular corrosion at high temperatures or in the welded state. If welding cannot be avoided, the use of material 1.4307 is recommended.

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WELDING

The material can be welded with or without filler metal (e.g., 1.4316). The maximum interpass temperature is 200°C. If the carbon content is in the upper range, solution annealing is required after welding. If heat treatment is not planned, the use of low-carbon material 1.4307 is recommended. Heat input during welding affects corrosion resistance.

AVAILABLE SIZES

Round bars: 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150 mm

APPLICATIONS

Reactor technology
Industrial boilers
Heat exchangers
Construction industry
Electronic equipment
Automotive industry
Container construction
Architectural elements
Food industry
Chemical industry
Decorative use and kitchen furniture
Oil / petrochemical industry
Pipeline construction
ASSEMBLY

Like all austenitic materials, AISI 304H tends to work-harden during machining. Therefore, the cutting depth must be chosen so that the hardened area lies below it.

304H steel stands out for its versatility and high strength, making it an ideal choice in a wide range of industrial and commercial applications. Thanks to its mechanical properties and corrosion resistance, it proves to be a fundamental element in critical sectors such as reactor technology, the chemical and petrochemical industry, automotive, and many others. With a complete range of sizes and the possibility of being processed according to specific needs, 304H steel confirms itself as a reliable and durable solution for the most demanding challenges of the modern world.