Alloy 800hht was intended for high temperature structural applications. Alloy 800, 800h, and 800ht are nickelironchromium alloys with good strength and excellent resistance to oxidation and carburization in hightemperature. Jul 03, 20 incoloy alloy 800 is an alloy of nickel, iron and chromium. Avoid crevices it is wellrecognised that butt welds should be fullpenetration welds to provide optimum strength. Procedure keep preheat and post heat to a minimum or according to base. Since alloys 800h and 800ht were developed primarily for hightemperature strength, corrosive environments to which these grades are exposed normally involve high temperature reactions such as oxidation and carburization. Wear variations of nimonic 80a slid against incoloy 800ht between room temperature r. Incoloy 800 a material having attrac tive intermediate temperature prop erties and to themselves, were exam ined in the surface ground condition. Incoloy 800ht,alloy 800ht,incoloy 800 ht,alloy 800 ht,incoloy.
The ati 800 alloy is normally used in service at temperatures to approximately 1100f 593c. The product is supplied in the solutiontreated condition. Incoloy 800h and 800ht,as the same to the incoloy 800,are also austenitic, solidsolution alloys. Incoloy alloy 800ht is a controlled composition derivative of incoloy alloy 800h uns n08810 and is used for the same creep resistant applications, however the combined effects of mechanical and thermal processing of the alloy permit higher design stresses to be incorporated than are permitted for the conventional alloy. Uns n08810 uns n08811 incoloy 8incoloy 800 h is an ironnickelchromium. Inconel 718 has the smaller grain size, even 4 time. These alloys are best machined in the colddrawn or cold alloy 800ht n08811 32. Nickelironchromium alloys designed to resist oxidation and. Incoloy alloys 800h and 800ht incoloy alloys 800h and 800ht have significantly higher creep and rupture strength than incoloy alloy 800. Alloy 800 800h 800at data sheet jacquetmetalservice. Comparison of creeprupture life at 1100c 2012f kanthal apm incoloy alloy 800ht creep properties incoloy alloy ma956 sheet is made by mechanical alloying. Two forms of this alloy, designated as 800 and 800h, are. It is an ironnickelchromium alloy having the same basic composition as incoloy 800 and incoloy 800h but with significantly higher creeprupture strength.
High performance alloys stocks and produces incoloy 800 h in this grade in the following forms. A nickelironchromium alloy with good strength and excellent resistance to oxidation and carburization in high. Corrosion of incoloy 800 and nickel base alloy weldments. The strength of 800hat is achieved by controlled levels of carbon, aluminum and. Incoclad 671 800ht is available as extruded or coldsized tubing in a range of diameters. It is set to be another busy week here at alloy wire international hq, with orders for our wire coming in from all over the world, logistics remaining strong and.
Incoloy 800ht has further modifications to the combined titanium and aluminum levels. Several studies have reported the corrosion behavior of nibased. Haynes 230 were similar, about 50% greater than for incoloy 800h and with. Software is simple and easy to use, select an existing pdf file, and hit button compress, a compressed pdf. Pdf mechanical and metallurgical characterization of laser. Incoloy 800 i800 monel 400 m4 incoloy 825 i825 monel 400hf m4s monel 400fhf m4f monel 500 m5 f51 d monel 500hf m5s monel 500fhf m5f 7 how to orderspecify forged steel valves section. Mega mex is a metal supplier of industrial metal products including stainless steel, carbon steel, nickel alloys, aluminum, copper, brass and bronze in all astm grades. Thre e high temperature alloys and in conel 82 were employed as filler met als. Alloy 800 800h 800at data sheet uns n08800 uns n08801 uns n08811 alloy 800 uns n08800, alloy 800h uns n08810 and alloy 800at uns n08811 are nickelironchromium alloys designed to resist oxidation and carburization at elevated temperatures through 1 900 f. This alloy performs best when welding nickelchromeiron alloys required to maintain strength and oxidation resistance above 1500of.
Used in chemical and petrochemical processing, in power plants for superheater and reheater tubing, in industrial. Corrosion of incoloy 800 and nickel base alloy weldments in steam. Incoloy alloy ma956 10 000 100 000 100 10 1 10 100 rupture life, hours stress, mpa 0. These generally have high resistance towards carburization and oxidation in exposure to high temperature. Download fda statement concerning the use of stainless steels as food contact surfaces of equipment. Free pdf compressor is a free pdf compression software to enable you to effectively reduce the size of pdf files. Materials and methods incoloy 800ht plates of dimension 150. Alloy 800, 800h, and 800ht tubes are nickelironchromium alloys with good strength and excellent resistance to oxidation. Incoloy 800 is an austenitic, solidsolution alloy and has a faceceteredcubic structure. Tensile strength the tensile strength ranges shown on our data sheets are typical for each alloy for the specified standard condition of supply. Materiali che lavoriamo specialities of materials we machine.
Incoloy 800 i800 monel 400 m4 incoloy 825 i825 monel 400hf m4s monel 400fhf m4f monel 500 m5 f51 d monel 500hf m5s monel 500fhf m5f 7 how to orderspecify forged steel valves section c bodybonnet, trim material cont. This alloy performs best when welding nickelchromeiron alloys. Aalco, founded in 1964, is today standard stock and the uk. Pdf in this work, microstructural characterization and mechanical properties of p91 and incoloy 800ht dissimilar laser beam welded joint were. Pdf effects of heat input on the mechanical and metallurgical. However, chemical composition limits vary with carbon, aluminum and. The top countries of suppliers are india, china, from which the percentage of incoloy 800 sheet supply is 1%, 99% respectively.
Incoloy 800h and incoloy 800ht, were developed to control the carbon content and grain size to optimize stress rupture properties. As table 1 shows, the base elements in all three alloys are the same. Examples are incoloy alloys 800ht and 803 and cast alloys such as hk40, hp, and hp45 modified. Incoloy 800ht,alloy 800ht,incoloy 800 ht,alloy 800 ht. Incoloy alloy 800ht tubing with the corrosion resistance of cladding in inconel alloy 671, a nominal 5050 nicr composition specially developed. To assess the effects of surfac e condition, the dissimilar metal weld ments and nonwelded specimens in. The higher strength results from close control of the carbon, aluminum, and titanium contents in conjunction with a hightemperature anneal. It is set to be another busy week here at alloy wire international hq, with orders for our. Alloy 800 800h 800at data sheet uns n08800 uns n08801 uns n08811 alloy 800 uns n08800, alloy 800h uns n08810 and alloy 800at uns n08811 are nickelironchromium alloys.
Has anyone found, or done themselves, the extrapolation for modulus of elasticity values on incoloy 800ht material over 1500f. The pigtail material was incoloy 800ht uns 08811, which is the industry standard for pigtail construction. Incoloy 800 sheet are alloys of nickel, chromium and iron. Incoloy alloy 800h incoloy al 800ht incoloy alloy 825 incoloy. Alloy 800 is an ironnickelchromium alloy with moderate strength and good resistance to oxidation and carburization at elevated temperatures. A nickelironchromium alloy with good strength and excellent resistance to oxidation and carburization in hightemperature atmospheres.
However, chemical composition limits vary with carbon, aluminum and titanium. In scwo systems, nibased alloys 625, 825, and 800 are also widely employed for manufacturing reactors and heat exchanger pipes. This is achieved by close control of carbon, aluminum and titanium contents in conjunction with a hightemperature anneal. It also resists corrosion by many aqueous environments. Specialty metal supplier that offers exotic alloys like hastelloy, incoloy, monel and duplex stainless in plate, sheet, bar, pipe, and tubing. Incoloy alloy 800ht is a controlled composition derivative of incoloy alloy 800h uns n08810 and is used for the same creep resistant applications, however the combined effects of mechanical and. The fusion zone hot cracking susceptibility of four commercial heats of alloy 800 was evaluated with the aid of the varestraint test. Titanium nitrides, titanium carbides, and chromium carbides normally appear in the alloys microstructure. Guidelines for the welded fabrication of nickel alloys for corrosionresistant service there are a number of factors that require attention during fabrication. Metal supplier, metal distributor of nickel alloys. The three alloys have nearly identical chemical composition. Aalco, founded in 1964, is today standard stock and the uks. Pdf corrosion behaviour of alloy 800h in low density.
Effect of exposure period and temperature on the corrosion of. Other characteristics of the alloy are good strength, and high resistance to oxidizing, reducing and aqueous environments. Incoloy alloy 800 incoloy alloy incoloy alloy 825 incoloy alloy 925 density no. Mega mex international credit and security agreement. Effect of exposure period and temperature on the corrosion. The three nickel steel alloys are identical in composition except for the higher level of carbon in alloy 800h, and the addition of up to 1. Tubular products from special metals pcc energy group. Rearrange individual pages or entire files in the desired order. An investigation of weld cracking in alloy 800 hot cracking susceptibility is associated with heattoheat variations in silicon and titanium by j. Incoloy 800 was the first of these alloys and it was slightly modified into incoloy 800h. These generally have high resistance towards carburization and oxidation. Incoloy 800ht, also known as alloy 800ht, is designated as uns n08811 or din w.
The top countries of suppliers are india, china, from. Alloys 800h and 800ht can be easily welded and processed by standard shop fabrication practices. Several other alloy manufacturers entered the alloy. Incoloy alloys 800h and 800ht annealed 0 100 200 300 400 500 600 700 800 900 temperature, c temperature, f typical usage range typical usage range 19. Incoflux 4, incoflux 6 and incoflux nt100 are used for.
Inconel 718 has the smaller grain size, even 4 time smaller then incoloy 800ht and 3 times smaller then inconel 230. Metal supplier, metal distributor of nickel alloys, stainless. The tensile strength, hardness, toughness, hightemperature tensile strength at 750c, hot corrosion properties, fractography and ageing properties were analyzed and the results are discussed. It is an ironnickelchromium alloy having the same basic composition as incoloy 800 and incoloy 800h but. A nickelcopper alloy with high strength and excellent corrosion resistance in a range of media, including sea water, hydrofluoric acid, sulfuric acid and alkalies. The three nickel steel alloys are identical in composition except for the. Incoloy 800 ht chart tm4 gpape4 mechanical op 28 jun 12. The three alloys have nearly identical chemical composition limits. These alloys are used in chemical and petrochemical processing, in. Alloy 800 offers general corrosion resistance to many aqueous media and, by virtue of its content of nickel, resists stress corrosion cracking. Files or is forced to file bankruptcy or enters reorganization proceedings. A wide variety of incoloy 800 sheet options are available to you, there are 585 suppliers who sells incoloy 800 sheet on, mainly located in asia. Since 1990, supplying and distributing exotic stainless steels, nickel alloys, duplex stainless, super duplex and other superalloys has been and still remains mega mexs core competency. Unlike conventional melted alloys, this permits oxide dispersion strengthening.
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