Etched cross section.., INCOLOY alloy 800 tube
Take a close look at this tube with 75,000 hours'service at 1600° F. ...you'll see why all the other tubes are still in service after 84,000 hours ~ You're looking a t t h e cross section of an INCOLOY* alloy 800 furnace tube t h a t ' s been subjected t o 9 years of high t e m p e r a t u r e service. I t s actual size is SYs inches outside diameter, ^i-inch wall, and 30 feet long. I t was taken, for inspection, from a steammethane reformer u n i t a t t h e Shell Chemical Company's Ventura, Cali fornia plant. I t shows no deteriora tion. No bulging. No cracking. I t still has plenty of service life r e m a i n i n g . There a r e good reasons behind this e x t r a o r d i n a r y performance. The kind of performance t h a t makes INCOLOY alloy 800 a highly practical furnace tube material for chemical and petro leum refining operations. F i r s t of all, INCOLOY alloy 800 h a s
the mechanical properties demanded for rugged, high temperature appli cations. It has high creep and rup ture strength—remains strong and ductile at furnace temperatures. But strength alone isn't enough to withstand the environment of pyrolysis or steam-methane reforming fur n a c e s . In a d d i t i o n to i t s h i g h strength, INCOLOY alloy 800 offers exceptional resistance to corrosion from combustion gas atmospheres. It offers excellent resistance to oxidation and scaling at high temperatures. It possesses outstanding resistance to carburization and the resulting embrittlement under prolonged heat. And it does not form the embrittling "sigma" phase in the critical 11001600°F range.
INCOLOY NICKEL-IRON-CHROMIUM ALLOYS 40
C&ΕΝ
This outstanding combination of mechanical and corrosion-resistant properties adds up to long, long service life and extremely dependable performance. That's why the INCOLOY alloy 800 furnace tubes are still goingstrong in t h e steam-methane re former unit at Shell. And that's why INCOLOY alloy 800 is usually your most practical answer when selecting furnace tube materials for critical operations. For additional help in solving problems in this area, contact the Huntington Alloy Products Division. And send for your copies of the booklets, "Engineering Properties of INCOLOY alloy 800," and "INCOLOY E x t r u d e d T u b i n g in t h e P e t r o c h e m i cal I n d u s t r y . " «Registered trademark
HUNTINGTON ALLOY PRODUCTS DIVISION THE INTERNATIONAL NICKEL COMPANY, I N C . H U N T I N G T O N 17 · WEST VIRGINIA
