321 is an austenitic stainless steel that is melted as AOD melt type.This is a stabalized version of 304 stainless to help improve intergranular corrosion resistance.This alloy is similar to 347 stainless except uses titanium to stabilize the carbon instead of niobium.The improved corrosion resistance allows this grade to be used in service at much higher temperatures close to 1000 o F.321 Stainless Steel AK SteelTYPE 321is a stabilized austenitic stainless steel similar to Type 304 but with a titanium addition of at least five times the carbon content.This titanium addition reduces or prevents carbide precipitation during welding and in 800 1500 °F (427 816 °C) service.It also improves the elevated temperature properties of the alloy.347 Stainless Steel - Universal Stainless347 is an austenitic stainless steel that is melted as AOD melt type.This is a stabalized version of 304 stainless to help improve intergranular corrosion resistance.This alloy is similar to 321 stainless except it uses niobium to stabilize the carbon instead of titanium.This improved corrosion resistance allows this grade to be used in service at much higher temperatures close to 1500 o F.
347 stainless steel is a columbium/tantalum stabilized austenitic chromium-nickel stainless steel.This material is stabilized against chromium carbide formation by the addition of columbium and tantalum.Since these elements have a stronger affinity for carbon than chromium,columbium-tantalum carbides precipitate within the grains instead of AISI 316L Stainless Steel vs.AISI 347 Stainless Steel May 30,2020·Both AISI 316L stainless steel and AISI 347 stainless steel are iron alloys.They have a very high 96% of their average alloy composition in common.There are 34 material properties with values for both materials.Properties with values for just one material (1,in this case) are not shown.AISI SS 321 / 321H Wire Welding Rod StardustAlloy 321 (UNS S32100) is a titanium stabilized austenitic stainless steel plate with good corrosion resistance.It has great resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 1500°F (427 816°C).
Stainless Steel 347 is similar to the 321 stainless steels in that it is often used as a stabilized alternative to Type 304.In the case of 347,however,the stabilizing agent is columbium.This metal intensifies 347s already present ability to withstand intergranular corrosion for maximum capabilities.Alloy 347/347H Heat Resistant Stainless Steel Plate General PropertiesCorrosion ResistanceMechanical PropertiesAlloy 347 (UNS S34700) is columbium stabilized austenitic stainless steel plate with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321 (UNS S32100).It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 1500°F (427 816°C).The alloy has good oxidation resistance and creep strength to 1500°F (816°C).It also possesses good low temperature toughness.See more on sandmeyersteelStabilization Heat Treatment of Austenitic Stainless Steel The next level of defense is to use chemically stabilized grades of stainless steel like Types 321 and 347.For these stainless steels Ti (Type 321) or Cb (Type 347) is added.The intent is for titanium or columbium carbides to form leaving chromium in solution.Experienced supplier of 347 stainless steel plate,347 Moreover,the inclusion of columbium allows 347 sheets/plates to have excellent corrosion resistance,even superior to that of 321 stainless steel pipes.However,347H steel is the higher carbon composition substitute of stainless steel pipe grade 347.Therefore,347H steel sheet/plate offer improved high temperature and creep properties.
321 ss pipe321 ss welding wire12345NextSS 321,Type 321,WNR 1.4541,UNS S32100,AISI 321,Therefore Grade 347 is the standard consumable for welding 321.As parent plate material Grade 347 is only occasionally used.321 and 347 have excellent forming and welding ASTM A240/ ASME SA240 Stainless Steels Sheets / Plates SS 321,Type 321,WNR 1.4541,UNS S32100,AISI 321SS 347,Type 347,WNR 1.4550,UNS S34700,AISI 347, In this temperature range,the overall corrosion resistance of Alloy 347 stainless steel plate is superior to Alloy 321 stainless steel plate. Alloy 347 also performs somewhat better than Alloy 321 in strongly oxidizing environments up to 1500°F (816°C).
Apr 25,2020·Recommended filler metals are SS 321,347,and 348.Electrode is E347 or E308L (service temperature < 370 °C (700 °F)).Machinability and Machining.Grade 321 stainless steel machinability is 36% in annealed conditoin based on a machinability rating of 100% for 1212 steel.SS347 - Ferrous Nonferrous Alloy for PipingSimilar to SS321,stainless steel 347(SS347) is an austenitic stainless steel with deliberate addition of tantalum(Ta) and niobium(Nb) to the basic stainless steel 304(SS304).The Nb+Ta addition reduces the sensitization of carbide precipitation during welding process which also improves its resistance to intergranular corrosion.Specification Sheet Alloy 347/347HAlloy 347 does not perform well in chloride solutions,even in small concentrations,or in sulfuric acid.Fabrication Data Alloy 347 can be easily welded and processed by standard shop fabrication practices.Machining The cold work hardening rate of 321 makes it less machinable than 410 stainless
welding 321 stainlessNov 14,2005See more results347 - Rolled Alloys,Inc.347 Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments.Type 347 is stabilized with columbium,it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack.Stainless Steel 347 - Alloy CompositionAlloy 347 has a slightly improved corrosion resistance over other alloys of stainless steel in strongly oxidizing environments as a result of the addition of columbium (niobium) and tantalum.Columbium-tantalum carbides precipitate within the grains instead of forming at the grain boundaries.Stainless Steel 347/347H Manufacturers,Suppliers FactoryStainless Steel 347/347H Suppliers,Manufacturers,Stockist 1.4550 / 1.4961,UNS S34700 / UNS34709,X6CrNiNb18-10,347S31,08KH18H12B.Metallica is one of the biggest stainless steel 347/347H product supplier and manufacturer in India,with over 250 customers in India and overseas.We are bulk buyers and exporters of stainless steel 347/347H pipes,plates,fittings and flanges from our
Stainless Steel Alloy 347 Material Solutions Stainless 347 has low tantalum and cobalt and should be considered for nuclear applications.Stainless 321 is resistant to atmospheric corrosion,sterilizing solutions,many organic chemicals,and a wide variety of inorganic chemicals.Stainless Steel Seamless Pipe - 347,321 US MetalsStainless Steel Seamless Pipe.TP347,TP347H,TP321,TP321H,TP317L,TP316,316H,316L,TP304,304H,304L ( ASTM A312/376 ASME SA312/376 ) - Seamless PipeStainless steel 347H and PWHT AMARINENov 03,2019·The next level of defense is to use chemically stabilized grades of stainless steel like Types 321 and 347.For these stainless steels Ti (Type 321) or Cb (Type 347) is added.The intent is for titanium or columbium carbides to form leaving chromium in solution.
demonstrate that Types 321 and 347 stainless steels can be susceptible to hydrogen-assisted fracture,but results are not consistent.Tensile data measured at room temperature are summarized in Table 22.214.171.124.Data for a Type 347 stainless steel (material L72) reveal thatThe advantages of using 321 SS vs.304/304L SS - PenflexTo be a true stabilized grade the 321 steel has to have Titanium (Ti) content at least 5 times than its Carbon (C) content.Reduced risk of corrosion in the HAZ is the main advantage of 321.Fatigue strength.In dynamic applications,fatigue strength is also important to consider.And in this respect 321 SS has a slight advantage over 304 SS.Welding 316L SS or 321 SS on 347 SSDec 05,2011Welding 321HJun 04,2006SO2 effect on 304 and 316May 05,2003304 vs.316 in CO2 and H2S applicationsSep 02,2001See more resultsStainless Steel 321/ AMS 5510/ Alloy 321/ AMS 5645Type 321 is a chromium-nickel stainless steel and with the addition of titanium,type 321 is resistant to intergranular corrosion.Type 321's general corrosion is less than Type 302..Type 321 is used where resistance to intergranular corrosion is required and where the parts are subjected to sustained heating or cooling within the range of 800 to 1500ºF.
Feb 23,2005·The overall consensus was to stay with 347 SS filler metal due to concerns about the loss of Ti as you mention.Other welding and metallurgical concerns entered into the equation but the Ti problem was the driving force due to severe corrosion problems when using 321 SS