AMS 5410 ROUND BAR MANUFACTURING: COMPLETE IN-738LC / INCONEL 738 ALLOY GUIDE, EQUIVALENTS, STANDARDS, APPLICATIONS & GLOBAL REFERENCE IMPORTANT TECHNICAL CORRECTION: AMS 5410 IS NOT A CONVENTIONAL WROUGHT ROUND-BAR SPECIFICATION. SAE DEFINES AMS 5410 AS A SPECIFICATION FOR VACUUM-MELTED, INVESTMENT-CAST, CORROSION- AND HEAT-RESISTANT NICKEL ALLOY CASTINGS. THE ALLOY IS COMMONLY ASSOCIATED WITH IN-738LC / INCONEL 738LC. THEREFORE, A SUPPLIER DESCRIBING “AMS 5410 ROUND BAR” SHOULD CLARIFY WHETHER THE REQUESTED PRODUCT IS CAST BAR, MASTER ALLOY, MACHINED CASTING, TEST BAR, OR AN ALTERNATIVE WROUGHT PRODUCT RATHER THAN IMPLYING THAT AMS 5410 ITSELF IS A STANDARD WROUGHT-BAR SPECIFICATION. UNIQUE TITLE AMS 5410 ROUND BAR MANUFACTURING GUIDE: INCONEL 738LC / IN-738 NICKEL SUPERALLOY, INTERNATIONAL EQUIVALENTS, SPECIFICATIONS, HEAT TREATMENT, APPLICATIONS & GLOBAL SUPPLIER GUIDE HIGH-VOLUME KEYWORD CLUSTER THE FOLLOWING KEYWORD THEMES ARE COMMERCIALLY RELEVANT FOR INTERNATIONAL SEARCH: • AMS 5410 • AMS 5410 ROUND BAR • AMS 5410 MATERIAL • AMS 5410 SPECIFICATION • AMS 5410 ALLOY • AMS 5410 EQUIVALENT • AMS 5410 MATERIAL EQUIVALENT • AMS 5410 NICKEL ALLOY • AMS 5410 SUPERALLOY • AMS 5410 CASTING • AMS 5410 INVESTMENT CASTING • AMS 5410 SUPPLIER • AMS 5410 MANUFACTURER • AMS 5410 EXPORTER • AMS 5410 STOCKIST • AMS 5410 BAR • AMS 5410 CAST BAR • INCONEL 738 • INCONEL 738LC • INCONEL 738 ROUND BAR • IN738LC • IN-738LC • IN 738 LC • IN738 • NICKEL ALLOY 738 • NICKEL BASED SUPERALLOY • NICKEL SUPERALLOY • HIGH TEMPERATURE ALLOY • TURBINE BLADE MATERIAL • GAS TURBINE ALLOY • AEROSPACE NICKEL ALLOY • PRECIPITATION HARDENED NICKEL ALLOY • INVESTMENT CAST NICKEL ALLOY • HEAT RESISTANT NICKEL ALLOY • CORROSION RESISTANT NICKEL ALLOY NOTE: EXACT WORLDWIDE SEARCH VOLUMES REQUIRE PROPRIETARY DATASETS SUCH AS GOOGLE KEYWORD PLANNER, SEMRUSH, AHREFS, OR SIMILAR PLATFORMS. THE KEYWORD SET ABOVE IS THEREFORE AN SEO-ORIENTED CLUSTER RATHER THAN A CLAIM OF EXACT GLOBAL MONTHLY SEARCH VOLUME. WHAT IS AMS 5410? SAE AMS 5410 SPECIFIES A HIGH-TEMPERATURE, CORROSION-RESISTANT NICKEL-BASE INVESTMENT-CASTING ALLOY WITH NOMINAL CHEMISTRY CENTERED AROUND NICKEL, CHROMIUM, COBALT, MOLYBDENUM, TUNGSTEN, NIOBIUM/COLUMBIUM, TITANIUM, TANTALUM, ALUMINUM, BORON AND ZIRCONIUM. THE SAE SPECIFICATION IDENTIFIES THE ALLOY APPROXIMATELY AS: 61NI – 16CR – 8.5CO – 1.8MO – 2.6W – 0.85CB – 3.4TI – 1.8TA – 3.4AL – 0.010B – 0.05ZR AND COVERS VACUUM MELTING AND VACUUM CASTING FOR INVESTMENT-CAST COMPONENTS. THE CURRENT DOCUMENTED REVISION IS AMS 5410C, WITH THE 2022 REVISION/REAFFIRMATION HISTORY RECORDED BY SAE. THE SPECIFICATION IS PARTICULARLY IMPORTANT FOR HIGH-TEMPERATURE TURBINE COMPONENTS, WHERE RESISTANCE TO OXIDATION, HOT CORROSION, CREEP AND THERMAL DEGRADATION IS REQUIRED. AMS 5410 VS. INCONEL 738LC ONE OF THE MOST IMPORTANT AND TECHNICAL RELATIONSHIPS IS: AMS 5410 ≈ IN-738LC / IN738LC INDUSTRY SOURCES IDENTIFY IN 738 LC WITH AMS 5410, WHILE PARMANU DHATU NIGAM SUPERALLOY TECHNOLOGIES SPECIFICALLY LISTS AMS 5410 AS THE AMS SPECIFICATION FOR IN 738 LC AND MSRR7173 AS AN OEM SPECIFICATION. OERLIKON LIKEWISE IDENTIFIES ITS 738LC POWDER PRODUCT AS SIMILAR TO AMS 5410 AND ALLOY IN-738) HOWEVER, AN IMPORTANT DISTINCTION SHOULD BE MAINTAINED: “EQUIVALENT” DOES NOT AUTOMATICALLY MEAN “IDENTICAL IN EVERY PRODUCT FORM, CHEMISTRY LIMIT, HEAT TREATMENT, INSPECTION REQUIREMENT OR MECHANICAL-PROPERTY REQUIREMENT.” A PURCHASING SPECIFICATION SHOULD THEREFORE ALWAYS STATE THE EXACT STANDARD, REVISION, PRODUCT FORM AND CONDITION. INTERNATIONAL NAMES AND TRADE DESIGNATIONS SAE: AMS 5410 SAE REVISION: AMS 5410C ALLOY FAMILY: IN-738 LOW-CARBON GRADE: IN-738LC / IN738LC COMMON COMMERCIAL NAME: INCONEL 738LC SHORT NAME: 738LC NICKEL SUPERALLOY DESIGNATION: NICKEL-BASE PRECIPITATION-HARDENING SUPERALLOY UK/OEM ASSOCIATION: MSRR7173 CHINESE DESIGNATION: K438 / K438-TYPE IN738LC GENERIC DESCRIPTION: CAST NICKEL-BASE TURBINE SUPERALLOY CHINESE INDUSTRY SOURCES IDENTIFY IN738LC / K438 AND LIST GB/T 14992, GJB 5512.1, MSRR7173 AND RELATED ROLLS-ROYCE SPECIFICATIONS FOR THE ALLOY FAMILY. IMPORTANT NAMING NOTE INCONEL IS A REGISTERED TRADEMARK ASSOCIATED WITH SPECIAL METALS. “INCONEL 738LC” IS THEREFORE A WIDELY USED COMMERCIAL/TRADE DESIGNATION, WHILE IN-738LC IS THE MORE NEUTRAL ALLOY DESIGNATION. CHEMICAL COMPOSITION OF AMS 5410 THE NOMINAL COMPOSITION IDENTIFIED IN THE SAE TITLE IS: NICKEL, NI 61% CHROMIUM, CR 16% COBALT, CO 8.5% MOLYBDENUM, MO 1.8% TUNGSTEN, W 2.6% COLUMBIUM/NIOBIUM, CB/NB 0.85% TITANIUM, TI 3.4% TANTALUM, TA 1.8% ALUMINUM, AL 3.4% BORON, B 0.010% ZIRCONIUM, ZR 0.05% THESE FIGURES ARE THE COMPOSITION ENCODED IN THE AMS 5410 SPECIFICATION TITLE; PRODUCTION MATERIAL MUST BE CHECKED AGAINST THE ACTUAL REVISION'S COMPLETE CHEMICAL LIMITS AND CERTIFICATION REQUIREMENTS. A RECENT TECHNICAL STUDY SIMILARLY REPORTS AN IN738LC COMPOSITION CENTERED AROUND APPROXIMATELY 16% CR, 8–9% CO, 2.4–2.8% W, 3.2–3.7% TI, 3.2–3.7% AL, 1.5–2.0% MO AND 1.5–2.0% TA. WHY AMS 5410 / IN738LC IS A HIGH-PERFORMANCE SUPERALLOY THE ALLOY'S PERFORMANCE COMES FROM A COMBINATION OF: • HIGH NICKEL CONTENT • CHROMIUM FOR OXIDATION AND CORROSION RESISTANCE • ALUMINUM AND TITANIUM FOR Γ′ PRECIPITATION STRENGTHENING • TUNGSTEN AND MOLYBDENUM FOR HIGH-TEMPERATURE STRENGTHENING • TANTALUM FOR STRENGTHENING AND PHASE STABILITY • COBALT FOR MICROSTRUCTURAL AND HIGH-TEMPERATURE-PROPERTY CONTROL • BORON AND ZIRCONIUM FOR GRAIN-BOUNDARY STRENGTHENING IN738LC IS A PRECIPITATION-STRENGTHENED NICKEL-BASE SUPERALLOY. RESEARCH LITERATURE IDENTIFIES THE Γ′ PHASE AS A MAJOR STRENGTHENING MECHANISM. THIS MAKES IT ATTRACTIVE FOR DEMANDING APPLICATIONS INVOLVING ELEVATED TEMPERATURE, CENTRIFUGAL LOADING, THERMAL CYCLING AND CORROSIVE COMBUSTION ENVIRONMENTS. AMS 5410 MANUFACTURING PROCESS BECAUSE AMS 5410 IS FUNDAMENTALLY AN INVESTMENT-CASTING SPECIFICATION, ITS MANUFACTURING ROUTE DIFFERS FROM THE NORMAL PROCESS USED FOR WROUGHT STAINLESS-STEEL OR NICKEL-ALLOY ROUND BAR. 1) RAW MATERIAL SELECTION HIGH-PURITY NICKEL, CHROMIUM, COBALT, MOLYBDENUM, TUNGSTEN, TITANIUM, TANTALUM, ALUMINUM, NIOBIUM, BORON AND ZIRCONIUM ADDITIONS ARE SELECTED ACCORDING TO THE REQUIRED CHEMISTRY. CHARGE MATERIALS MUST BE CAREFULLY CONTROLLED BECAUSE SMALL VARIATIONS IN REACTIVE ELEMENTS CAN AFFECT: • Γ′ PRECIPITATION • GRAIN-BOUNDARY BEHAVIOR • OXIDATION RESISTANCE • HOT-CORROSION RESISTANCE • CASTABILITY • CREEP PERFORMANCE 2) VACUUM MELTING AMS 5410 CALLS FOR VACUUM MELTING. VACUUM PROCESSING HELPS CONTROL UNWANTED GASES AND CONTAMINATION WHILE PROVIDING THE METALLURGICAL CLEANLINESS REQUIRED FOR AEROSPACE AND GAS-TURBINE CASTINGS. 3) INVESTMENT CASTING THE MOLTEN ALLOY IS INTRODUCED INTO AN INVESTMENT-CASTING MOLD. INVESTMENT CASTING IS PARTICULARLY SUITABLE FOR: • TURBINE BLADES • TURBINE VANES • COMPLEX HOT-SECTION COMPONENTS • INTRICATE AIRFOIL GEOMETRIES • THIN-WALL COMPONENTS • COMPONENTS CONTAINING INTERNAL PASSAGES THE PRINCIPAL ADVANTAGE IS THE ABILITY TO MANUFACTURE COMPLICATED GEOMETRIES WITH COMPARATIVELY LIMITED MACHINING. 4) SOLIDIFICATION AND GRAIN STRUCTURE AFTER POURING, CONTROLLED SOLIDIFICATION DETERMINES THE RESULTING MICROSTRUCTURE. IN738LC IS GENERALLY ASSOCIATED WITH EQUIAXED CAST TURBINE COMPONENTS, ALTHOUGH RELATED TURBINE-ALLOY TECHNOLOGIES MAY EMPLOY DIRECTIONAL-SOLIDIFICATION OR SINGLE-CRYSTAL APPROACHES. GRAIN STRUCTURE IS CRITICAL BECAUSE TURBINE COMPONENTS EXPERIENCE: • THERMAL GRADIENTS • CENTRIFUGAL FORCES • CREEP • FATIGUE • OXIDATION • HOT CORROSION 5) CASTING INSPECTION DEPENDING ON THE PURCHASE ORDER AND APPLICABLE REQUIREMENTS, CASTINGS CAN UNDERGO INSPECTION TECHNIQUES SUCH AS: • VISUAL EXAMINATION • DIMENSIONAL INSPECTION • RADIOGRAPHIC EXAMINATION • PENETRANT INSPECTION • METALLOGRAPHIC EXAMINATION • CHEMICAL ANALYSIS • MECHANICAL TESTING THE EXACT INSPECTION PROGRAM MUST BE TAKEN FROM THE GOVERNING MATERIAL SPECIFICATION, DRAWING AND PURCHASER REQUIREMENTS. AMS 5410 HEAT TREATMENT AMS 5410 HAS EVOLVED BEYOND THE ORIGINAL AS-CAST DESIGNATION. THE CURRENT REVISION DESCRIPTION INCLUDES MATERIAL THAT CAN BE SUPPLIED AS CAST, SOLUTION TREATED, OR SOLUTION AND PRECIPITATION HARDENED. PUBLISHED TECHNICAL REFERENCES ASSOCIATED WITH AMS 5410 REPORT A COMMONLY USED HEAT-TREATMENT SEQUENCE INVOLVING: SOLUTION TREATMENT: APPROXIMATELY 1121°C ± 6°C (2050°F ± 10°F) FOR ABOUT 2 HOURS FOLLOWED BY AGING: APPROXIMATELY 843°C ± 6°C (1550°F ± 10°F) FOR ABOUT 24 HOURS. A PARTICULAR COMPONENT SHOULD NOT AUTOMATICALLY BE HEAT-TREATED USING A GENERIC INTERNET RECIPE. THE PURCHASE SPECIFICATION, DRAWING, ALLOY CONDITION AND CURRENT AMS REVISION SHOULD CONTROL. “AMS 5410 ROUND BAR” — WHAT DOES IT ACTUALLY MEAN? THIS IS A CRUCIAL DISTINCTION FOR MANUFACTURERS, EXPORTERS AND BUYERS. AMS 5410 ITSELF SPECIFIES INVESTMENT CASTINGS SAE'S OFFICIAL SCOPE SAYS THE SPECIFICATION COVERS THE NICKEL ALLOY IN THE FORM OF INVESTMENT CASTINGS. THEREFORE, THE PHRASE: “AMS 5410 ROUND BAR” IS POTENTIALLY AMBIGUOUS. A CUSTOMER MAY ACTUALLY BE ASKING FOR: 1. IN738LC CAST BAR 2. IN738LC MASTER ALLOY 3. MACHINED CASTING 4. TEST BAR PRODUCED FROM AN AMS 5410 MELT 5. ROUND TEST SPECIMEN 6. ADDITIVELY MANUFACTURED IN738LC MATERIAL 7. ANOTHER NICKEL-ALLOY ROUND BAR THAT IS BEING INCORRECTLY MARKETED AS AMS 5410. FOR A TECHNICALLY ACCURATE QUOTATION, SPECIFY: ALLOY + PRODUCT FORM + APPLICABLE STANDARD + REVISION + CONDITION + DIMENSIONS + TESTING + CERTIFICATION. IN738LC ROUND BAR MANUFACTURING WHERE A MANUFACTURER SUPPLIES IN738LC CAST ROUND STOCK OR TEST BARS, A REPRESENTATIVE MANUFACTURING ROUTE CAN INVOLVE: VACUUM MELTING → CHEMICAL ADJUSTMENT → VACUUM CASTING → CONTROLLED SOLIDIFICATION → HEAT TREATMENT WHERE REQUIRED → SURFACE CONDITIONING → ROUGH MACHINING → TURNING/GRINDING → DIMENSIONAL INSPECTION → CHEMICAL VERIFICATION → MECHANICAL/METALLURGICAL TESTING → CERTIFICATION. THE ACTUAL ROUTE DEPENDS ON WHETHER THE MATERIAL IS INTENDED AS A CASTING, MASTER ALLOY, TEST MATERIAL, ADDITIVE-MANUFACTURING FEEDSTOCK OR ANOTHER SPECIALIZED PRODUCT. INTERNATIONAL EQUIVALENTS THERE IS NO UNIVERSALLY INTERCHANGEABLE ASTM/AISI/EN WROUGHT-ROUND-BAR GRADE THAT CAN SIMPLY BE SUBSTITUTED FOR AMS 5410. THE MOST RELEVANT ALLOY DESIGNATIONS ARE: USA / SAE: AMS 5410 USA ALLOY DESIGNATION: IN-738 / IN738LC COMMERCIAL DESIGNATION: INCONEL 738LC ROLLS-ROYCE: MSRR7173 CHINA: K438 / IN738LC-RELATED DESIGNATION CHINESE STANDARDS: GB/T 14992; GJB 5512.1 REFERENCES REPORTED FOR IN738LC/K438 ADDITIVE MANUFACTURING: 738LC POWDER MARKETED AS SIMILAR TO AMS 5410 THE CHINESE MANUFACTURER/SOURCE LISTING FOR K438 SPECIFICALLY ASSOCIATES THE ALLOY WITH GB/T 14992, GJB 5512.1 AND MSRR7173) DO NOT ADVERTISE AN INVENTED UNS, EN/WERKSTOFF OR ASTM NUMBER AS AN EXACT AMS 5410 EQUIVALENT WITHOUT DOCUMENTED CROSS-REFERENCE. UNLIKE COMMON WROUGHT NICKEL ALLOYS SUCH AS ALLOY 625 OR ALLOY 718, IN738LC DOES NOT HAVE A SIMPLE UNIVERSALLY RECOGNIZED WROUGHT-BAR UNS/EN EQUIVALENT. OEM AND RELATED SPECIFICATIONS FOR IN738LC, ONE IMPORTANT OEM SPECIFICATION IS: ROLLS-ROYCE MSRR7173 PARMANU DHATU NIGAM IDENTIFIES MSRR7173 AS THE OEM SPECIFICATION ASSOCIATED WITH IN 738 LC ALONGSIDE AMS 5410) OTHER OEM SPECIFICATIONS CAN EXIST FOR PARTICULAR TURBINE MANUFACTURERS, ENGINE PROGRAMS, COMPONENT DRAWINGS OR CASTING CONDITIONS. SUCH DOCUMENTS SHOULD NOT BE PRESENTED AS AUTOMATICALLY INTERCHANGEABLE WITH AMS 5410. SIMILAR AND RELATED NICKEL SUPERALLOYS AMS 5410 / IN738LC BELONGS TO A BROADER FAMILY OF CAST NICKEL-BASE TURBINE SUPERALLOYS. COMMON COMPARISON MATERIALS INCLUDE: • IN738C • IN713LC • IN939 • IN100 • RENÉ 80 • RENÉ 88 • MAR-M 247 • CM247LC • GTD-111 • NIMONIC-SERIES ALLOYS THESE ARE SIMILAR APPLICATION MATERIALS, NOT NECESSARILY DIRECT EQUIVALENTS. FOR EXAMPLE, IN738LC, CM247LC AND MAR-M 247 ARE ALL USED IN HIGH-TEMPERATURE TURBINE ENVIRONMENTS, BUT THEIR CHEMISTRIES, MICROSTRUCTURES, PROCESSING REQUIREMENTS AND MECHANICAL PROPERTIES DIFFER SUBSTANTIALLY. AMS 5410 APPLICATIONS IN738LC IS PARTICULARLY ASSOCIATED WITH: GAS TURBINES • TURBINE BLADES • TURBINE VANES • HOT-SECTION COMPONENTS • INDUSTRIAL GAS-TURBINE COMPONENTS • STATIONARY TURBINE COMPONENTS PARMANU DHATU NIGAM SPECIFICALLY DESCRIBES IN 738 LC AS A NICKEL-BASE SUPERALLOY FOR CAST TURBINE BLADES AND VANES AND LISTS AEROSPACE AND POWER-GENERATION APPLICATIONS. AEROSPACE POTENTIAL APPLICATIONS INCLUDE: • AIRCRAFT TURBINE COMPONENTS • HOT-SECTION CASTINGS • TURBINE AIRFOILS • HIGH-TEMPERATURE ENGINE COMPONENTS POWER GENERATION IN738LC IS USED EXTENSIVELY IN THE BROADER GAS-TURBINE INDUSTRY BECAUSE OF ITS HIGH-TEMPERATURE STRENGTH AND HOT-CORROSION RESISTANCE. REPAIR AND ADDITIVE MANUFACTURING IN738LC IS ALSO INVESTIGATED AND USED IN ADVANCED REPAIR AND ADDITIVE-MANUFACTURING TECHNOLOGIES. OERLIKON'S 738LC MATERIAL, FOR EXAMPLE, IS SUPPLIED AS POWDER FOR ADDITIVE MANUFACTURING AND IS IDENTIFIED AS SIMILAR TO AMS 5410 / IN-738) ADVANTAGES OF IN738LC KEY ADVANTAGES INCLUDE: • HIGH-TEMPERATURE STRENGTH • PRECIPITATION-HARDENING CAPABILITY • EXCELLENT OXIDATION RESISTANCE • GOOD HOT-CORROSION RESISTANCE • STRONG CREEP RESISTANCE • GOOD THERMAL STABILITY • SUITABILITY FOR TURBINE AIRFOILS • SUITABILITY FOR COMPLEX INVESTMENT CASTINGS • HIGH Γ′ STRENGTHENING POTENTIAL • LONG-ESTABLISHED USE IN TURBINE TECHNOLOGY THE ALLOY'S HIGH Γ′ CONTENT IS CENTRAL TO ITS ELEVATED-TEMPERATURE PERFORMANCE. MANUFACTURING CHALLENGES PRODUCING IN738LC SUCCESSFULLY REQUIRES SUBSTANTIALLY MORE CONTROL THAN CONVENTIONAL STAINLESS-STEEL ROUND BAR MANUFACTURING. TYPICAL CONCERNS INCLUDE: HOT CRACKING HIGH-ALLOY NICKEL SUPERALLOYS CAN BE SUSCEPTIBLE TO CRACKING DURING WELDING OR ADDITIVE PROCESSING. SEGREGATION DURING SOLIDIFICATION, ALLOYING ELEMENTS MAY SEGREGATE BETWEEN DENDRITIC AND INTERDENDRITIC REGIONS. POROSITY VACUUM MELTING AND CONTROLLED CASTING ARE IMPORTANT FOR OBTAINING SOUND MATERIAL. CARBIDES AND INTERMETALLIC PHASES IMPROPER CHEMISTRY OR THERMAL PROCESSING CAN PRODUCE UNDESIRABLE PHASES OR MICROSTRUCTURAL CONDITIONS. HEAT-TREATMENT CONTROL TEMPERATURE UNIFORMITY, HEATING RATE, HOLDING TIME AND COOLING CONDITIONS CAN STRONGLY INFLUENCE Γ′ PRECIPITATION AND MECHANICAL PERFORMANCE. MACHINING IN738LC IS SIGNIFICANTLY MORE DIFFICULT TO MACHINE THAN CONVENTIONAL CARBON AND STAINLESS STEELS BECAUSE OF ITS HIGH STRENGTH AND WORK-HARDENING BEHAVIOR. QUALITY CONTROL FOR AMS 5410 / IN738LC A PROFESSIONAL MANUFACTURER SHOULD ESTABLISH A DOCUMENTED INSPECTION PLAN COVERING, AS APPLICABLE: CHEMICAL ANALYSIS • NI • CR • CO • MO • W • NB/CB • TI • TA • AL • B • ZR • C AND OTHER SPECIFIED RESIDUAL ELEMENTS MECHANICAL TESTING • TENSILE STRENGTH • YIELD STRENGTH WHERE APPLICABLE • ELONGATION • ELEVATED-TEMPERATURE PROPERTIES WHERE SPECIFIED METALLURGICAL TESTING • GRAIN STRUCTURE • Γ′ MORPHOLOGY • CARBIDE PHASES • POROSITY • INCLUSIONS • SEGREGATION NONDESTRUCTIVE TESTING • RADIOGRAPHIC TESTING • LIQUID PENETRANT TESTING • VISUAL EXAMINATION DIMENSIONAL TESTING • DIAMETER • ROUNDNESS • STRAIGHTNESS • LENGTH • SURFACE CONDITION CERTIFICATION SHOULD IDENTIFY THE EXACT SPECIFICATION REVISION AND CONDITION RATHER THAN MERELY STATING “AMS 5410 MATERIAL.” AMS 5410 VS. COMMON NICKEL ALLOYS GENERAL TYPE AMS 5410 / IN738LC: CAST PRECIPITATION-STRENGTHENED NI SUPERALLOY INCONEL 718: WROUGHT/CAST PRECIPITATION-STRENGTHENED NI ALLOY INCONEL 625: WROUGHT CORROSION-RESISTANT NI ALLOY IN939: CAST NI SUPERALLOY IN713LC: CAST NI SUPERALLOY CM247LC: CAST NI SUPERALLOY MAR-M 247: CAST NI SUPERALLOY RENÉ 80: CAST NI SUPERALLOY TYPICAL USE AMS 5410 / IN738LC: TURBINE BLADES/VANES INCONEL 718: AEROSPACE, SHAFTS, STRUCTURES INCONEL 625: CHEMICAL, MARINE, AEROSPACE IN939: TURBINE COMPONENTS IN713LC: TURBINE COMPONENTS CM247LC: TURBINE BLADES MAR-M 247: HIGH-TEMPERATURE TURBINE COMPONENTS RENÉ 80: TURBINE BLADES THESE MATERIALS SHOULD NOT BE TREATED AS DIRECT SUBSTITUTES MERELY BECAUSE THEY OCCUPY THE SAME HIGH-TEMPERATURE MARKET. COMMON TRADE AND SEARCH NAMES FOR GLOBAL AND PROCUREMENT VISIBILITY, MANUFACTURERS MAY ENCOUNTER THE FOLLOWING SEARCH TERMINOLOGY: AMS5410 AMS 5410 SAE AMS 5410 AMS 5410C AMS 5410 ALLOY AMS 5410 NICKEL ALLOY AMS 5410 CASTING AMS 5410 INVESTMENT CASTING AMS 5410 ROUND BAR AMS5410 BAR IN738 IN-738 IN 738 IN738LC IN-738LC IN 738 LC INCONEL 738 INCONEL 738LC INCONEL 738 ROUND BAR NICKEL ALLOY 738 K438 K438 ALLOY 738LC NICKEL SUPERALLOY MSRR7173 THESE VARIATIONS ARE USEFUL BECAUSE INTERNATIONAL BUYERS FREQUENTLY SEARCH BY ALLOY FAMILY, COMMERCIAL NAME, SPECIFICATION NUMBER OR OEM DESIGNATION RATHER THAN USING ONE STANDARDIZED TERMINOLOGY. BRAND NAMES AND COMMERCIAL NAMES THE MOST PROMINENT COMMERCIAL/TRADE TERMINOLOGY ENCOUNTERED FOR THIS ALLOY FAMILY IS: INCONEL 738 / INCONEL 738LC “INCONEL” IS A TRADEMARKED COMMERCIAL ALLOY-FAMILY NAME RATHER THAN A GENERIC METALLURGICAL DESIGNATION. OTHER COMPANIES MAY SELL THEIR OWN 738LC POWDER, MASTER ALLOY OR SEMI-FINISHED MATERIAL UNDER PROPRIETARY PRODUCT NAMES. THOSE PRODUCT NAMES SHOULD NOT BE TREATED AS SEPARATE INTERNATIONALLY STANDARDIZED GRADES UNLESS THE MANUFACTURER PROVIDES A DOCUMENTED SPECIFICATION CROSS-REFERENCE. FOR EXAMPLE, OERLIKON'S METCOADD 738LC-A IS IDENTIFIED AS SIMILAR TO AMS 5410 AND ALLOY IN-738) RECOMMENDED PRODUCT DESCRIPTION FOR A MANUFACTURER FOR A TECHNICALLY ACCURATE WEBSITE OR QUOTATION, A MANUFACTURER COULD DESCRIBE THE MATERIAL AS: “IN738LC / INCONEL 738LC NICKEL-BASE SUPERALLOY MANUFACTURED FOR APPLICATIONS REQUIRING HIGH-TEMPERATURE STRENGTH, OXIDATION RESISTANCE AND HOT-CORROSION RESISTANCE. MATERIAL CAN BE SUPPLIED IN SUITABLE CAST, MACHINED OR SPECIALIZED FORMS SUBJECT TO APPLICABLE AMS 5410 REQUIREMENTS AND CUSTOMER SPECIFICATIONS.” AVOID CLAIMING: “AMS 5410 IS A STANDARD WROUGHT ROUND-BAR SPECIFICATION.” THAT STATEMENT IS TECHNICALLY MISLEADING BECAUSE SAE'S SCOPE IS FOR INVESTMENT CASTINGS. FREQUENTLY ASKED QUESTIONS IS AMS 5410 STAINLESS STEEL? NO. AMS 5410 IS A NICKEL-BASE SUPERALLOY SPECIFICATION, NOT A STAINLESS-STEEL SPECIFICATION. IS AMS 5410 INCONEL 738LC? AMS 5410 IS STRONGLY ASSOCIATED WITH IN738LC / ALLOY IN-738, AND MULTIPLE INDUSTRY SOURCES EXPLICITLY IDENTIFY THE RELATIONSHIP. IS AMS 5410 AVAILABLE AS ROUND BAR? THE SPECIFICATION ITSELF COVERS INVESTMENT CASTINGS, NOT ORDINARY WROUGHT ROUND BAR. A “ROUND BAR” OFFERED AS AMS 5410 SHOULD THEREFORE BE CAREFULLY DEFINED BY ITS MANUFACTURING ROUTE AND CERTIFICATION. WHAT IS THE MAIN APPLICATION OF AMS 5410? HIGH-TEMPERATURE GAS-TURBINE AND AEROSPACE INVESTMENT CASTINGS, ESPECIALLY TURBINE BLADES, VANES AND RELATED HOT-SECTION COMPONENTS. IS IN738LC PRECIPITATION HARDENED? YES. ITS HIGH-TEMPERATURE STRENGTH IS SUBSTANTIALLY ASSOCIATED WITH Γ′ PRECIPITATION STRENGTHENING. WHAT IS THE CURRENT AMS 5410 REVISION? SAE'S DOCUMENTED CURRENT REVISION IS AMS 5410C, WITH THE REVISION HISTORY SHOWING THE 2022 UPDATE/REAFFIRMATION. IS AMS 5410 THE SAME AS MSRR7173? THEY ARE ASSOCIATED SPECIFICATIONS FOR IN738LC, BUT THEY SHOULD NOT AUTOMATICALLY BE ASSUMED IDENTICAL. THE APPLICABLE CUSTOMER/OEM SPECIFICATION MUST BE VERIFIED. FINAL SUMMARY AMS 5410 IS AN IMPORTANT NICKEL-BASE CORROSION- AND HEAT-RESISTANT INVESTMENT-CASTING SPECIFICATION ASSOCIATED WITH IN-738 / IN738LC / INCONEL 738LC, RATHER THAN A CONVENTIONAL WROUGHT ROUND-BAR STANDARD. ITS COMBINATION OF NICKEL, CHROMIUM, COBALT, ALUMINUM, TITANIUM, TANTALUM, TUNGSTEN AND OTHER STRENGTHENING ADDITIONS GIVES IN738LC THE ELEVATED-TEMPERATURE PROPERTIES REQUIRED FOR DEMANDING GAS TURBINE, AEROSPACE AND POWER-GENERATION APPLICATIONS. SAE IDENTIFIES AMS 5410 SPECIFICALLY WITH INVESTMENT CASTINGS, WHILE INDUSTRY SOURCES ASSOCIATE IN 738 LC WITH AMS 5410 AND ROLLS-ROYCE MSRR7173) FOR GLOBAL PROCUREMENT, AND INDUSTRIAL MARKETING, THE STRONGEST TERMINOLOGY CLUSTER IS: AMS 5410 | AMS5410 | AMS 5410C | AMS 5410 ALLOY | AMS 5410 CASTING | AMS 5410 INVESTMENT CASTING | AMS 5410 ROUND BAR | IN738LC | IN-738LC | IN 738 LC | INCONEL 738LC | INCONEL 738 | IN738 | NICKEL ALLOY 738 | K438 | MSRR7173 | NICKEL SUPERALLOY | TURBINE BLADE ALLOY | GAS TURBINE ALLOY | AEROSPACE NICKEL ALLOY | HIGH TEMPERATURE NICKEL ALLOY.