Incoloy 800, 800H, 800HT Seamless Pipes & Tubes

INCOLOY 800/800 H/800HT is an austenitic heat-resistant alloy widely used in high-temperature pressure-bearing structural parts. The high strength of 800 H/HT is mainly due to the addition of carbon, aluminum, and titanium elements, and the minimum temperature is 1149℃ Anneal at temperature to achieve grain size ASTM 5 grade or greater. For INCOLOY 800 H/HT used below 787℃, use 82 (ER NiCr-3) welding wire. RA 330-04 (N08334) welding wire has a matching coefficient of thermal expansion and higher strength. If you want to obtain maximum mechanics For strength, it is best to use welding wire 617 (ERNiCrCoMo-1) or welding rod 117 (ENiCrCoMo-1). In order to avoid the possible stress relaxation of INCOLOY 800/800 H/HT (NCF800/N08800/1.4876/NA15) welded parts above 538°C which may cause grain boundary cracking, post-weld heat treatment is required at 899°C. The holding time is one hour (at least half an hour) per 25 mm of material thickness. /25mm thickness), then air-cooled.