Inconel alloy 600 Web - Revised Sept 2008

1 Inconel alloy (nickel-chromium-iron) alloy 600 (UNSN06600 ) is a standard engineeringmaterial for applications which require resistance tocorrosion and heat. The alloy also has excellentmechanical properties and presents the desirablecombination of high strength and good limiting chemical composition of Inconel alloy 600 is shown in Table 1. The high nickel contentgives the alloy resistance to corrosion by many organicand inorganic compounds and also makes it virtuallyimmune to chloride-ion stress-corrosion confers resistance to sulfur compounds andalso provides resistance to oxidizing conditions at hightemperatures or in corrosive solutions. The alloy is notprecipitation hardenable; it is hardened andstrengthened only by cold versatility of Inconel alloy 600 has led toits use in a variety of applications involvingtemperatures from cryogenic to above 2000 F(1095 C).

2 The alloy is used extensively in the chemicalindustry for its strength and corrosion include heaters, stills, bubble towers andcondensers for processing of fatty acids; evaporatortubes, tube sheets and flaking trays for the manufactureof sodium sulfide; and equipment for handling abieticacid in the manufacture of paper alloy 's strength and oxidation resistance at hightemperatures make it useful for many applications in theheat-treating industry. It is used for retorts, muffles,roller hearths and other furnace components and forheat-treating baskets and the aeronautical field, Inconel alloy 600 isused for a variety of engine and airframe componentswhich must withstand high temperatures.

3 Examples arelockwire, exhaust liners and turbine alloy 600 is used in the electronic fieldfor such parts as cathode-ray tube spiders, thyratrongrids, tube support members and alloy is a standard material of construction fornuclear reactors. It has excellent resistance to corrosionby high-purity water, and no indication of chloride-ionstress-corrosion cracking in reactor water systems hasbeen detected. For nuclear applications, the alloy isproduced to exacting specifications and is designatedINCONEL alloy physical constants of Inconel alloy 600 aregiven in Table 2. Thermal properties at low and hightemperatures are listed in Table modulus of elasticity in tension at varioustemperatures is shown in Table of total hemispherical emissivityand total normal emissivity are shown in Table values for physical constants and thermalproperties reported here are typical but are not suitablefor specification CCoonnssttaannttss aanndd TThheerrmmaall PPrrooppeerrttiieessTTaabbllee 11- Limiting Chemical Composition, %Nickel (plus Cobalt).

4 Indicated by the nominal mechanical propertieslisted in Table 6, a broad range of strength and hardnessis obtainable with Inconel alloy 600, depending onform and condition. In the annealed condition, the alloyexhibits moderate yield strengths of 25,000 to 50,000psi (172 to 345 MPa). Yield strengths in that range,combined with elongations of 55 to 35%, permit thealloy to be fabricated with little difficulty. Heavily cold-worked material, however, can have tensile strengths ashigh as 220,000 psi (1517 MPa).Values for properties reported in this publicationare typical but are not suitable for specificationpurposes unless stated as minimum or PPrrooppeerrttiieessTTaabbllee 22- Physical ConstantsDensity, Range, C.

5 1354-1413 Specific Heat, Btu/lb- Resistivity, ohm-circ Temperature, F ..-192 C ..-124 Permeability at 200 oersted ( kA/m) .. Number SMC-027 Copyright Special Metals Corporation, 2008 (Sept 08)INCOLOY, INCOFLUX, Inconel , INCO-WELD and800HT are trademarks of the Special Metals Corporationgroup of ooffEExxppaannssiioonnaaEElleeccttrriicc aallRReessiissttiivviittyySSppeecciiffii ccHHeeaattTTeemmppeerraattuurreeWW//mm CC mm//mm CC mmJJ//kkgg CC CCTT aabbllee 33- Thermal PropertiesaMean coefficient of linear expansion between 70 F (21 C) and temperatureshown except that the room-temperature value was measured from -320 F (-196 C). iinn//fftt22 hh FF1100--66iinn//iinn FFoohhmm cciirrcc mmiill//ffttBBttuu//llbb FF FFIINNCCOONNEELL aallllooyy 6600002 Total Hemispherical Emissivity Normal EmissivityAs-Rolled and and ssRRaattiiooSShheeaarr MMoodduulluussYYoouunngg CCPP ooiissssoonn 44- Modulus of ElasticityTTaabbllee 55- EmissivityTTeemmppeerraattuurree,, FF (( CC))aOxidized by heating 13 min in air at 2000 F (1090 C).

6 BOxidized by heating 15 min at 1500 F (815 C), 15 min at 1800 F (980 C), and15 min at 2100 F (1150 C). FF110033kkssii110033kkssiiNominal room-temperature tensile-property ranges ofmaterial in standard forms and conditions are given in 7 lists room-temperature tensile properties of hot-rolled rod annealed at various temperatures. Tensileproperties of a rod forged to a 31% reduction at 1600 F(870 C) are given for the as-forged condition and aftervarious annealing treatments in Table 8. Room-temperatureproperties of (22-mm) thick hot-rolled plate arelisted in Table 10 shows the tensile properties of a cold-drawn, (19-mm) dia. rod. The table also shows the effectof annealing on the properties of cold-drawn material.

7 Thetensile properties of cold-drawn tubing are given for the as-drawn and annealed conditions in Table PPrrooppeerrttiieess660000((331155))2200 0000((11009900))11880000((998800))115500 00((881155))11220000((665500))990000((44 8800))IINNCCOONNEELL aallllooyy 6600003 TTaabbllee 66- Typical Mechanical-Property RangesaRod and BarCold-DrawnAnnealed80-100550-69025-501 70-34555-3565-85 BAs-Drawn105-150725-103580-125550-86030- 1090B-30 CHot-FinishedAnnealed80-100550-69030-502 05-34555-3565-85 BHot-Finished85-120585-83035-90240-62050 -3075-95 BPlateHot-RolledAnnealed80-105550-72530- 50205-34555-3565-85 BAs-Rolled85-110580-76035-65240-45050-30 80-95 BSheetCold-RolledAnnealed80-100550-69030 -45205-31055-3588B Temper145-1701000-1170120-160830-110010- 230C and PipeHot-FinishedHot-Finished75-100520-69 025-50170-34555-35-Annealed75-100520-690 25-50170-34555-35-Cold-DrawnAnnealed80-1 00550-69025-50170-34555-3588B 1

8 Temper105-135725-93070-105480-72535-15-S pring Temper170-2201170-1520150-2101035-14505- 2-FFoorrmm aanndd CCoonnddiittiioonnkkssiiEElloonnggaattii oonn,, %%MMPP aakkssiiMMPPaaHHaarrddnneessss,, RRoocckkwweellllTTeennssiilleeSSttrreenn ggtthhYYiieelldd SSttrreennggtthh(( OOffffsseett))aValues shown are composites for various product sizes and therefore are not suitable for specification shown are for sizes to ( to mm) dia. Properties for other sizes may vary from tensile properties of cold-drawn , CTemperature, FStress, MPa0200400600800100012001400100200300400 5006007008007006005004003002001000130120 11010090 Stress, ksi Elongation, %Tensile StrengthElongationYield Strength( Offset)Figure tensile properties of cold-drawn aallllooyy 6600004 TTaabbllee 1111 - Room-Temperature Properties of Cold-Drawn ( ) OD x ( ) ,,RRoocckkwweellllEElloonnggaattiioonn,, %%YYiieelldd SSttrreennggtthh(( OOffffsseett))

9 FF//11hhrr CC//11hhrrMMPP aakkssiiHigh-temperature tensile properties of cold-drawn barare shown in Figure properties of cold-drawn (20% reduction) rod atcryogenic temperatures are shown in Figure 2. Brinell hardness readings on hot-rolled material atelevated temperatures are given in Figure , high-temperature tensile data for annealedrod and plate are plotted in Figures 4 and 5. 180160140120100806040200-450 -400-300-200-100002004006008001000120014 000-50-100-150-200-250200 Temperature, CTemperature, FStress, ksi Elongation, % Reduction of Area, %Stress, MPaTensile StrengthElongationReduction of AreaYield Strength( Offset)100 TTaabbllee 77- Room-Temperature Tensile Properties of Hot-Rolled RodHHeeaattTTrreeaattmmeennttaaHHaarrddn neessss,,RRbbRReedduuccttiioonnooff AArreeaa,,%%EElloonnggaattiioonn,,%%YYii eelldd SSttrreennggtthh(( OOffffsseett))

10 TTeennssiilleeSSttrreennggtthh FF//11hhrrkkssii CC//11hhrrMMPPaaMMPP aakkssiiAs-rolled 1040 1090 1150 after all 88 - Room-Temperature Properties of ForgedaRodTTeennssiilleeSSttrreennggtthh kkssiiMMPPaaAs-forged reduction, finished at 1600 F (870 C).bAir-cooled after all 99- Room-Temperature Properties of Hot-Rolled PlateaAir-cooled after all 1100- Room-Temperature Properties of Cold-Drawn RodHHeeaattTTrreeaattmmeennttbbHHaarrddn neessss,,RRbbEElloonnggaattiioonn,,%%YYi ieelldd SSttrreennggtthh(( OOffffsseett)) FF//11hhrr CC//11hhrrMMPP aakkssiiHHeeaattTTrreeaattmmeennttaaHHaa rrddnneessss,,RRbbRReedduuccttiioonnooff AArreeaa,,%%EElloonnggaattiioonn,,%%YYii eelldd SSttrreennggtthh(( OOffffsseett))