Import Alloy Steel F9 Flanges — Buy in wholesale FOB from Supplier in India

Heubach International manufactures and exports Alloy Steel F9 Flanges conforming to ASTM A182 Grade F9, a chromium-molybdenum alloy steel with elevated chromium content of 8-10% and molybdenum of 0.9-1.1% for enhanced high-temperature and high-pressure performance. The grade offers superior oxidation resistance and creep strength compared to lower-alloyed grades, positioning it for severe service conditions in refinery reactor outlets, power plant superheater piping, and high-pressure chemical processing lines. Available configurations mirror the full standard range: weld neck, slip-on, blind, orifice, socket weld, threaded, long weld neck, ring type joint, and reducing flanges, with pressure classes from 150# through 2500# and sizes nominally from 1/2 inch (15 NB) to 48 inches (1200 NB). The supplier notes successful hot forming with forces comparable to austenitic stainless steels, indicating established forging expertise for complex shapes.

The F9 grade's higher chromium content relative to F5 confers markedly improved resistance to oxidation and high-temperature sulphidation, making it suitable for environments where F5 would experience excessive scaling. Carbon is controlled to 0.15% maximum with manganese 0.3-0.6%, silicon 0.5-1.0%, phosphorus and sulphur each 0.03% maximum, balancing weldability with elevated-temperature strength. Mechanical properties from the source indicate minimum tensile strength of 585 MPa and yield strength of 380 MPa with 20% elongation, representing a significant strength advantage over F5 that allows thinner wall sections or higher design stresses. Buyers should note that the higher alloy content increases hardenability, requiring more stringent preheat and interpass temperature control during welding to avoid cold cracking in the heat-affected zone.

These flanges integrate into ASME B31.1 power piping, B31.3 process piping, and Section VIII pressure vessel applications where design temperatures exceed F5 capabilities or longer service life is economically justified. The material is 100% recyclable, with the supplier emphasising environmental credentials through scrap metal utilisation, though buyers should prioritise technical suitability over sustainability claims for critical pressure-containing applications. International trade commonly employs CFR and CIF terms, with export packaging and mill test certificates provided. Importers should discuss specific project requirements, including any NACE sour service constraints or hydrogen embrittlement concerns, directly with Heubach International, as the listing does not address specialised service qualifications.

Heubach International maintains its headquarters at 15 Keshav Bhavan, No.8, 1st Parsiwada Lane, Mumbai 400004, Maharashtra, India. The organisation operates across manufacturing, supply, trading, and export functions for alloy steel flanges and associated piping products. Its trust classification stands at harbor tier, with response rate and average response hours both recorded at zero, indicating no responsive engagement data is currently available. Prospective buyers should factor this absence into their supplier evaluation, particularly for time-sensitive procurement.

The supplier profile indicates capability across multiple ASTM A182 grades including F9, with stated expertise in hot forming processes and export logistics. No verified information regarding production facility scale, quality system certifications, annual turnover, or named end-user projects appears in the source material. The Mumbai location provides access to JNPT, India's largest container port, facilitating international shipment. Buyers are advised to request facility audit reports, ISO 9001 certification validity, and reference customer contacts independently before committing to large-volume or critical-service orders.