Incoloy 800H Pipe Supplier in India

Incoloy 800H (UNS N08810) is a nickel-iron-chromium alloy with controlled carbon content (0.05-0.10%) and a coarser grain size (ASTM 5 or coarser) compared to standard Incoloy 800. These controlled parameters give 800H significantly better creep and stress-rupture properties at elevated temperatures. The alloy is specifically designed for service above 600°C where long-term strength and resistance to creep deformation are critical. Creative Metal Industries supplies Incoloy 800H pipes meeting all compositional and grain size requirements per ASTM B407.

All three grades share the same basic 32Ni-21Cr composition but differ in carbon content and grain size control. Incoloy 800 has carbon up to 0.10% with no grain size requirement, making it suitable for general corrosion applications. Incoloy 800H has carbon restricted to 0.05-0.10% with grain size ASTM 5 or coarser for enhanced creep strength. Incoloy 800HT further adds titanium and aluminum controls (0.85-1.20% combined) for even higher creep resistance above 900°C. CMI stocks all three variants and provides guidance on proper grade selection based on service temperature.

Steam methane reformer tubes operate at temperatures of 850-950°C under internal pressure with expected service lives of 100,000+ hours. Incoloy 800H's controlled carbon and grain size provide the necessary creep-rupture strength for these demanding conditions. The alloy also offers excellent resistance to oxidation and carburization in the reformer environment containing hydrogen, carbon monoxide, and steam. Its thermal stability prevents sigma phase formation that would cause embrittlement during long-term service. CMI supplies reformer-grade 800H tubes with complete documentation including grain size certification.

Incoloy 800H requires a grain size of ASTM No. 5 or coarser (larger grains) as specified in ASTM B407. This coarser grain structure is achieved through solution annealing at approximately 1150°C followed by controlled cooling. The larger grain size is essential because creep resistance at elevated temperatures improves with increasing grain size due to reduced grain boundary sliding. All Incoloy 800H pipes supplied by Creative Metal Industries include grain size certification on the mill test certificate to verify compliance with this critical requirement.

Creative Metal Industries supplies Incoloy 800H seamless pipes from 1/2" to 10" NB (15NB to 250NB) in schedules ranging from SCH 10S to 80S as per ASTM B407. Welded pipes are available from 2" to 10" NB in SCH 10S to 40S per ASTM B514. Tubes are stocked in OD range 12.7mm to 168.3mm in various wall thicknesses per ASTM B163. We maintain ready stock of commonly used reformer tube sizes and can supply non-standard dimensions with short lead times from approved mills.

The price of Incoloy 800H pipe in India ranges from approximately Rs 1,800 to Rs 5,000 per kg depending on size, schedule, quantity, and current nickel/chromium market rates. Seamless pipes per ASTM B407 command a premium over welded pipes due to the manufacturing process. Prices also vary based on whether material is ex-stock or requires fresh production from the mill. Creative Metal Industries offers competitive pricing with transparent cost breakdowns and can provide firm quotations valid for the project procurement period.