ASTM ASME 442 Stainless Steel Pipes & Tubes

ASTM/ASME 442 Stainless Steel Pipes & Tubes are high-chromium ferritic (UNS S44200) products conforming to ASTM A268 standards, featuring an elevated chromium content (18-23%) for superior oxidation resistance and scaling resistance up to 1035°C (1900°F). This specialized ferritic grade offers exceptional heat resistance in continuous high-temperature service, outperforming standard 400-series stainless steels in furnace components, heat treatment equipment, and combustion systems. The alloy's chromium-rich composition provides excellent resistance to sulfur compounds and reducing atmospheres while maintaining structural stability under thermal cycling conditions. With its nickel-free, ferritic microstructure, 442 demonstrates lower thermal expansion and better thermal conductivity than austenitic grades, making it particularly suitable for radiant tubes, burner components, and other high-heat applications where oxidation resistance and thermal fatigue properties are paramount, though with limited use in corrosive aqueous environments due to its ferritic structure.