www.manoir-industries.com www.manoiryantai.com ( MANOIR INDUSTRIES ( Latest alloys developments Pushing the limits with new alloys For Petrochemical applications involving temperatures between 650° C and 1 100° C (and beyond), heat resisting alloys must ensure creep strength, carburisation and corrosion resistance, creep elongation and withstand the effects of cyclic temperatures and changes of the operating environment if properly designed. Moreover, maintenance concerns such as weldability after ageing are also of importance. The main applications for centrifugally cast tubes in heat resistant alloy are the following: • Steam reforming, for the production of syngas, hydrogen, ammonia or methanol. Process conditions are up to 30 bar (435 psi) and up to 1 000° C (1,832° F). • Steam cracking, for the production of ethylene. Process conditions are of a few bars of pressure only, but temperature sometimes reaches above 1 150° C (2,012° F). Latest improvements consist of: Improved creep properties of a high carburization resistant alloy by adding Ta or improved carburization resistance by adding Al. Specific grades are developed for reformers, such as XOR (25/35 Nb Ta), of for crackers, such as 40XO (30/40 Nb TaAl), being a creep resistance improvement to the current 35/45 material, with similar corrosion resistance properties. Thermal shock resistance & weldability after ageing are key features which those new alloys also accommodate. Manoir Composition Creep Carburization Thermal shock alloy (CrNi) properties properties resistance 900 20/32 LC + + +++ 900B 25/35 LC + ++ ++ XTM LC 35/45 LC + +++ + Low carbon alloys Manoir Composition Creep Carburization Max operating alloy (CrNi) properties properties temperature XM 25/35 +++ + 1 100° C 40X 30/40 ++ ++ 1 150° C XTM 35/45 + +++ 1 200° C High carbon alloys Application Grade Composition References Air Liquide Samsung Reformer XOR XM + Ta Chiyoda Corus Arcelor Sabic Petrochemicals NI Cracker 40X0 40X + Ta + Al Dow Chemical Huntsman Chemical MANOIR INDUSTRIES PITRES PLANT 12, rue des Ardennes - BP 8401 - Pitres F-27108 VAL DE REUIL CEDEX Tel. 33 (0)2 32 48 72 00 – Fax 33 (0)2 32 49 57 26 YANTAI MANOIR HEAT RESISTANT ALLOYS CO 149 Westlane,Xingfu Sicun, Yantai,264002 P.R.China Tel: 86-535-6800946 - Fax: 86-535-6819741 ( Current materials Latest developments