AMS 5384 ROUND BAR & UDIMET 500 MANUFACTURING GUIDE: UNS N07500 NICKEL SUPERALLOY, INTERNATIONAL EQUIVALENTS, STANDARDS, APPLICATIONS & GLOBAL SUPPLY AMS 5384 ROUND BAR MANUFACTURING – COMPLETE GUIDE TO UDIMET 500 / UNS N07500 NICKEL SUPERALLOY AMS 5384, ASSOCIATED WITH UDIMET 500 / UNS N07500, BELONGS TO THE FAMILY OF PRECIPITATION-HARDENABLE NICKEL-CHROMIUM-COBALT SUPERALLOYS DEVELOPED FOR DEMANDING ELEVATED-TEMPERATURE APPLICATIONS. HOWEVER, THE DISTINCTION BETWEEN AMS 5384 CASTINGS AND WROUGHT UDIMET 500 ROUND BAR IS ESSENTIAL WHEN PREPARING A PURCHASE SPECIFICATION. SAE'S CURRENT RECORD IDENTIFIES AMS 5384F AS COVERING INVESTMENT CASTINGS OF A CORROSION- AND HEAT-RESISTANT NICKEL ALLOY CONTAINING APPROXIMATELY 53NI-18CR-18CO-4MO-2.9TI-2.9AL-0.006B, PRODUCED BY VACUUM MELTING/VACUUM CASTING AND SUBJECTED TO SOLUTION AND PRECIPITATION HEAT TREATMENT. AMS 5384F WAS STABILIZED IN APRIL 2017) FOR UDIMET 500 ROUND BAR, BUYERS SHOULD INSTEAD SPECIFY THE APPLICABLE BAR/FORGING STANDARD, DIMENSIONS, CONDITION AND TESTING REQUIREMENTS RATHER THAN SIMPLY CALLING OUT AMS 5384. WHAT IS AMS 5384? AMS 5384 IS A SAE AEROSPACE MATERIAL SPECIFICATION ASSOCIATED WITH: • NICKEL-BASE SUPERALLOY • INVESTMENT CASTINGS • CORROSION-RESISTANT ALLOY • HEAT-RESISTANT ALLOY • VACUUM-MELTED MATERIAL • VACUUM-CAST MATERIAL • SOLUTION HEAT TREATED MATERIAL • PRECIPITATION HEAT TREATED MATERIAL • UDIMET 500 • UNS N07500 • THE HISTORICAL SPECIFICATION WAS ISSUED IN 1960 AND HAS PROGRESSED THROUGH REVISIONS A, B, C, D, E AND F. SAE IDENTIFIES AMS5384F AS THE STABILIZED REVISION DATED APRIL 4, 2017) IMPORTANT TERMINOLOGY THE FOLLOWING TERMS SHOULD NOT AUTOMATICALLY BE TREATED AS IDENTICAL SPECIFICATIONS: AMS 5384 CASTING ≠ ASTM B637 ROUND BAR ≠ AMS 5751/5753 BAR/FORGING. THEY MAY IDENTIFY THE SAME OR CLOSELY RELATED ALLOY CHEMISTRY, BUT THE PRODUCT FORM, MANUFACTURING ROUTE, HEAT TREATMENT, MECHANICAL REQUIREMENTS AND CERTIFICATION REQUIREMENTS CAN DIFFER. UDIMET 500 / UNS N07500 ROUND BAR FOR APPLICATIONS REQUIRING ROUND BAR, BAR STOCK, FORGING STOCK OR FORGINGS, UDIMET 500 IS COMMONLY IDENTIFIED AS: • UDIMET 500 • UDIMET 500 • UNS N07500 • W.NR. 2.4983 • DIN NICR18COMOALTI • AISI/SAE 684 • AFNOR NCK19DAT PUBLISHED CROSS-REFERENCE SOURCES IDENTIFY UDIMET 500 WITH UNS N07500, W.NR. 2.4983, DIN NICR18COMOALTI AND AFNOR NCK19DAT. AMS 5384 / UDIMET 500 CHEMICAL COMPOSITION THE ALLOY IS A PRECIPITATION-HARDENING NICKEL-CHROMIUM-COBALT SUPERALLOY. PUBLISHED REFERENCES GIVE SLIGHTLY DIFFERENT CHEMISTRY VALUES DEPENDING ON THE PARTICULAR SPECIFICATION, PRODUCT FORM AND SOURCE, SO THE GOVERNING MATERIAL SPECIFICATION AND MILL CERTIFICATE SHOULD ALWAYS CONTROL. A REPRESENTATIVE UDIMET 500 COMPOSITION INCLUDES: ELEMENT - TYPICAL / NOMINAL LEVEL NICKEL (NI) BALANCE, APPROXIMATELY 52–53% CHROMIUM (CR) APPROXIMATELY 17.5–19% COBALT (CO) APPROXIMATELY 16.5–19% MOLYBDENUM (MO) APPROXIMATELY 4% TITANIUM (TI) APPROXIMATELY 3% ALUMINUM (AL) APPROXIMATELY 3% IRON (FE) UP TO APPROXIMATELY 4% BORON (B) CONTROLLED MINOR ADDITION CARBON (C) CONTROLLED MINOR ADDITION PUBLISHED UDIMET 500 DATA SHOW THE ALLOY'S PRINCIPAL STRENGTHENING CHEMISTRY AS NICKEL, CHROMIUM, COBALT, MOLYBDENUM, TITANIUM AND ALUMINUM. THE AMS 5384 SPECIFICATION TITLE ITSELF IDENTIFIES APPROXIMATELY 53NI-18CR-18CO-4MO-2.9TI-2.9AL-0.006B. ________________________________________ WHY UDIMET 500 IS USED FOR HIGH-TEMPERATURE APPLICATIONS UDIMET 500 IS A PRECIPITATION-HARDENABLE NICKEL-BASE SUPERALLOY. ITS PERFORMANCE COMES FROM A COMBINATION OF: • GAMMA-PRIME PRECIPITATION STRENGTHENING • CHROMIUM FOR OXIDATION AND CORROSION RESISTANCE • COBALT FOR HIGH-TEMPERATURE STRENGTHENING • MOLYBDENUM FOR SOLID-SOLUTION STRENGTHENING • ALUMINUM AND TITANIUM FOR GAMMA-PRIME FORMATION • NICKEL MATRIX STABILITY AT ELEVATED TEMPERATURES THE ALLOY IS ASSOCIATED WITH HIGH-TEMPERATURE TURBINE AND OTHER DEMANDING ENGINEERING COMPONENTS. PUBLISHED TECHNICAL REFERENCES DESCRIBE APPLICATIONS INCLUDING TURBINE BLADES, DISCS, FASTENERS AND OTHER HOT-SECTION COMPONENTS. AMS 5384 MANUFACTURING PROCESS BECAUSE AMS 5384 IS FUNDAMENTALLY AN INVESTMENT-CASTING SPECIFICATION, ITS MANUFACTURING ROUTE DIFFERS FROM CONVENTIONAL WROUGHT ROUND-BAR PRODUCTION. 1) RAW MATERIAL SELECTION THE MANUFACTURER BEGINS WITH CAREFULLY CONTROLLED NICKEL, CHROMIUM, COBALT, MOLYBDENUM, TITANIUM, ALUMINUM AND OTHER ALLOYING ADDITIONS. CHARGE MATERIALS MUST BE SELECTED TO CONTROL: • CHEMISTRY • TRACE ELEMENTS • SULFUR • PHOSPHORUS • LEAD • BISMUTH • OXYGEN • NITROGEN • OTHER RESIDUAL ELEMENTS FOR AEROSPACE-GRADE PRODUCTION, HEAT TRACEABILITY IS ESSENTIAL. 2) VACUUM MELTING VACUUM MELTING IS A MAJOR PART OF THE AMS 5384 MANUFACTURING ROUTE. VACUUM PROCESSING HELPS CONTROL: • GAS CONTAMINATION • OXIDATION • UNWANTED INCLUSIONS • REACTIVE ALLOYING ELEMENTS • MELT CLEANLINESS THE AMS 5384 SPECIFICATION SPECIFICALLY IDENTIFIES THE ALLOY AS VACUUM-MELTED AND VACUUM-CAST. 3) INVESTMENT CASTING THE MOLTEN ALLOY IS CAST INTO CERAMIC INVESTMENT MOLDS TO CREATE NEAR-NET-SHAPE COMPONENTS. INVESTMENT CASTING CAN PRODUCE: • COMPLEX GEOMETRIES • THIN SECTIONS • INTERNAL PASSAGES • TURBINE COMPONENTS • PRECISION AEROSPACE COMPONENTS • HIGH-TEMPERATURE HARDWARE THE ADVANTAGE IS THE ABILITY TO MANUFACTURE GEOMETRICALLY COMPLEX COMPONENTS WHILE MINIMIZING SUBSEQUENT MACHINING. UDIMET 500 ROUND BAR MANUFACTURING PROCESS WHEN THE REQUIREMENT IS SPECIFICALLY UDIMET 500 ROUND BAR, THE MANUFACTURING ROUTE NORMALLY BECOMES A WROUGHT-MATERIAL PROCESS RATHER THAN AN AMS 5384 INVESTMENT-CASTING PROCESS. A TYPICAL INDUSTRIAL ROUTE CAN INCLUDE: CONTROLLED MELTING → REMELTING/REFINING → BILLET PRODUCTION → HOMOGENIZATION → HOT WORKING/FORGING → BAR ROLLING → SOLUTION TREATMENT → AGING/PRECIPITATION HARDENING → STRAIGHTENING → CENTERLESS GRINDING/TURNING → INSPECTION → CERTIFICATION THE EXACT ROUTE DEPENDS ON THE APPLICABLE BAR SPECIFICATION, DIAMETER AND CUSTOMER'S AEROSPACE REQUIREMENTS. FORGING AND HOT WORKING OF UDIMET 500 UDIMET 500 IS A HIGH-STRENGTH PRECIPITATION-HARDENABLE NICKEL SUPERALLOY AND REQUIRES CAREFUL THERMAL CONTROL DURING HOT WORKING. IMPORTANT PRODUCTION VARIABLES INCLUDE: • BILLET TEMPERATURE • FORGING TEMPERATURE • REDUCTION RATIO • DEFORMATION RATE • INTERMEDIATE REHEATING • GRAIN STRUCTURE • COOLING RATE • FINAL HEAT TREATMENT POOR PROCESS CONTROL CAN RESULT IN: • CRACKING • ABNORMAL GRAIN GROWTH • SEGREGATION • UNDESIRABLE MICROSTRUCTURE • REDUCED FATIGUE PERFORMANCE • NON-UNIFORM MECHANICAL PROPERTIES FOR AEROSPACE MATERIAL, PROCESS QUALIFICATION AND HEAT TRACEABILITY ARE THEREFORE CRITICAL. UDIMET 500 ROUND BAR HEAT TREATMENT UDIMET 500 OBTAINS MUCH OF ITS HIGH-TEMPERATURE STRENGTH THROUGH PRECIPITATION HARDENING. A GENERALIZED TREATMENT SEQUENCE CONSISTS OF: SOLUTION TREATMENT → CONTROLLED COOLING → PRECIPITATION/AGE HARDENING PUBLISHED TECHNICAL DATA DESCRIBE UDIMET 500 AS A PRECIPITATION-HARDENING ALLOY AND REPORT AN ANNEALING CONDITION AROUND 1079°C / 1975°F, ALTHOUGH THE ACTUAL TREATMENT FOR A PURCHASED PRODUCT MUST BE TAKEN FROM THE APPLICABLE MATERIAL SPECIFICATION RATHER THAN A GENERIC DATASHEET. HEAT TREATMENT CONTROLS: • GAMMA-PRIME PRECIPITATION • HARDNESS • YIELD STRENGTH • TENSILE STRENGTH • CREEP RESISTANCE • STRESS-RUPTURE PERFORMANCE • DIMENSIONAL STABILITY UDIMET 500 ROUND BAR MACHINING MACHINING UDIMET 500 REQUIRES TOOLING AND CUTTING PARAMETERS APPROPRIATE FOR NICKEL-BASE SUPERALLOYS. COMMON OPERATIONS INCLUDE: • CNC TURNING • CNC MILLING • DRILLING • BORING • THREADING • GRINDING • CENTERLESS GRINDING • PRECISION FINISHING THE ALLOY'S HIGH STRENGTH AND WORK-HARDENING BEHAVIOR CAN MAKE MACHINING SUBSTANTIALLY MORE DEMANDING THAN MACHINING CONVENTIONAL STAINLESS STEELS. MACHINING RECOMMENDATIONS GENERALLY EMPHASIZE: • RIGID WORKHOLDING • SHARP CUTTING EDGES • CONTROLLED CUTTING SPEED • APPROPRIATE FEED • ADEQUATE COOLANT • AVOIDANCE OF DWELLING • AVOIDANCE OF EXCESSIVE HEAT GENERATION PUBLISHED MACHINING REFERENCES CLASSIFY UDIMET 500 WITHIN THE DIFFICULT-TO-MACHINE SUPERALLOY GROUP. UDIMET 500 ROUND BAR INTERNATIONAL EQUIVALENTS STANDARD / SYSTEM - EQUIVALENT / DESIGNATION UNS N07500 TRADE NAME: UDIMET 500 W.NR 2.4983 DIN NICR18COMOALTI AFNOR NCK19DAT SAE/AISI 684 ASTM B637 FOR APPLICABLE PRECIPITATION-HARDENING NICKEL-ALLOY BAR/FORGING PRODUCTS ASME SB-637 WHERE APPLICABLE AMS 5751 / AMS 5753 FOR APPLICABLE UDIMET 500 WROUGHT PRODUCTS AMS CASTING 5384 COMMON COMMERCIAL DESCRIPTION: NICKEL-CHROMIUM-COBALT SUPERALLOY MATERIAL FAMILY: PRECIPITATION-HARDENING NICKEL-BASE SUPERALLOY CROSS-REFERENCE DATABASES AND TECHNICAL SOURCES IDENTIFY UNS N07500, UDIMET 500, ASTM B637, ASME SB-637 AND AMS 5751/5753 AMONG THE RELEVANT DESIGNATIONS/SPECIFICATIONS. EQUIVALENCY WARNING: AN INTERNATIONAL DESIGNATION SHOULD NOT BE ASSUMED TO CONSTITUTE AN AUTOMATIC SPECIFICATION SUBSTITUTION. THE PURCHASING DOCUMENT SHOULD STATE THE EXACT STANDARD AND REVISION REQUIRED. AMS 5384 SPECIFICATION HISTORY SAE'S HISTORICAL RECORD SHOWS THE FOLLOWING AMS 5384 PROGRESSION: AMS 5384 STATUS / DATE: ISSUED JUNE 1960 AMS 5384A STATUS / DATE: REVISED JANUARY 1977 AMS 5384B STATUS / DATE: REVISED OCTOBER 1982 AMS 5384C STATUS / DATE: REVISED APRIL 1985 AMS 5384D STATUS / DATE: REAFFIRMED MAY 1995 AMS 5384E STATUS / DATE: REVISED APRIL 2012 AMS 5384F STATUS / DATE: STABILIZED APRIL 2017 SAE IDENTIFIES AMS5384F AS THE STABILIZED VERSION AND LISTS THE EARLIER REVISIONS IN ITS REVISION HISTORY. AMS 5384 VS ASTM B637 THIS IS ONE OF THE MOST IMPORTANT DISTINCTIONS FOR BUYERS SEARCHING FOR AMS 5384 ROUND BAR. AMS 5384 PRIMARILY COVERS: • INVESTMENT CASTINGS • NICKEL-BASE ALLOY • VACUUM MELTING • VACUUM CASTING • SOLUTION TREATMENT • PRECIPITATION TREATMENT ASTM B637 COVERS APPLICABLE HOT- AND COLD-WORKED PRECIPITATION-HARDENABLE NICKEL ALLOY ROD, BAR, FORGINGS AND FORGING STOCK FOR HIGH-TEMPERATURE SERVICE. THE STANDARD INCLUDES UNS N07500 AMONG THE COVERED ALLOYS. THEREFORE, A CUSTOMER LOOKING FOR UDIMET 500 ROUND BAR SHOULD NORMALLY IDENTIFY THE APPLICABLE WROUGHT-BAR SPECIFICATION RATHER THAN TREATING AMS 5384 AS A GENERIC ROUND-BAR STANDARD. AMS 5751 AND AMS 5753 UDIMET 500 AMS 5751 AND AMS 5753 ARE FREQUENTLY ASSOCIATED WITH UDIMET 500 WROUGHT PRODUCTS. PUBLISHED TECHNICAL REFERENCES IDENTIFY THESE AMS SPECIFICATIONS ALONGSIDE ASTM B637 AND UNS N07500. FOR A REAL AEROSPACE PURCHASE ORDER, CONFIRM: • PRODUCT FORM • APPLICABLE AMS REVISION • DIAMETER • LENGTH • HEAT-TREATMENT CONDITION • MECHANICAL PROPERTIES • GRAIN-SIZE REQUIREMENTS • NDT REQUIREMENTS • MELT PRACTICE • TEST REQUIREMENTS • CERTIFICATION LEVEL COMMON TRADE NAMES AND COMMERCIAL NAMES THE MOST IMPORTANT COMMERCIAL DESIGNATION IS: UDIMET 500 / UDIMET 500 THE NAME UDIMET 500 IS WIDELY USED FOR UNS N07500. OTHER LITERATURE MAY USE: • UDIMET 500 • UDIMET-500 • UDIMET500 • ALLOY 500 • NICKEL ALLOY 500 • NICKEL-CHROMIUM-COBALT ALLOY • NICKEL-BASE PRECIPITATION-HARDENING SUPERALLOY • UNS N07500 • W.NR. 2.4983 • NICR18COMOALTI • SAE 684 SOME COMMERCIAL DATABASES ALSO LIST NAMES SUCH AS AERALLOY 500, ALLOY CO 500, NICR18CO AND SY 500; THESE SHOULD BE TREATED AS COMMERCIAL/MATERIAL CROSS-REFERENCE TERMINOLOGY RATHER THAN AUTOMATIC SPECIFICATION EQUIVALENCE. AMS 5384 / UDIMET 500 APPLICATIONS UDIMET 500 IS ASSOCIATED WITH DEMANDING APPLICATIONS REQUIRING HIGH-TEMPERATURE STRENGTH AND OXIDATION/HOT-CORROSION RESISTANCE. POTENTIAL APPLICATIONS INCLUDE: AEROSPACE • GAS TURBINE COMPONENTS • TURBINE BLADES • TURBINE DISCS • HIGH-TEMPERATURE FASTENERS • HOT-SECTION HARDWARE • ENGINE COMPONENTS POWER GENERATION • INDUSTRIAL GAS TURBINES • TURBINE COMPONENTS • HIGH-TEMPERATURE ROTATING HARDWARE INDUSTRIAL ENGINEERING • HIGH-TEMPERATURE SHAFTS • BOLTING • PRECISION COMPONENTS • FURNACE COMPONENTS • HIGH-TEMPERATURE TOOLING PUBLISHED TECHNICAL REFERENCES SPECIFICALLY ASSOCIATE UDIMET 500 WITH GAS-TURBINE HOT-SECTION COMPONENTS AND ELEVATED-TEMPERATURE SERVICE. AMS 5384 MATERIAL ADVANTAGES KEY PERFORMANCE CHARACTERISTICS INCLUDE: • EXCELLENT ELEVATED-TEMPERATURE STRENGTH • GOOD CREEP RESISTANCE • STRESS-RUPTURE RESISTANCE • GOOD OXIDATION RESISTANCE • GOOD HOT-CORROSION RESISTANCE • PRECIPITATION-HARDENING CAPABILITY • HIGH HARDNESS AFTER AGING • GOOD DIMENSIONAL STABILITY AT ELEVATED TEMPERATURES • NICKEL-BASE METALLURGICAL STABILITY THESE PROPERTIES EXPLAIN WHY UDIMET 500 IS USED WHERE ORDINARY CARBON STEEL, STAINLESS STEEL OR LOWER-ALLOY NICKEL MATERIALS CANNOT PROVIDE SUFFICIENT HIGH-TEMPERATURE PERFORMANCE. QUALITY CONTROL FOR UDIMET 500 ROUND BAR A PROFESSIONAL AEROSPACE-GRADE MANUFACTURER OR STOCKHOLDER SHOULD ESTABLISH TRACEABILITY THROUGH: CHEMICAL TESTING VERIFICATION OF: • NI • CR • CO • MO • TI • AL • FE • C • B • MN • SI • P • S • OTHER SPECIFIED RESIDUAL ELEMENTS MECHANICAL TESTING DEPENDING ON THE GOVERNING SPECIFICATION: • TENSILE STRENGTH • YIELD STRENGTH • ELONGATION • REDUCTION OF AREA • HARDNESS • STRESS RUPTURE • CREEP-RELATED TESTING ASTM B637, FOR EXAMPLE, SPECIFIES CHEMICAL ANALYSIS AND MECHANICAL TESTING REQUIREMENTS FOR COVERED NICKEL-ALLOY PRODUCTS. NON-DESTRUCTIVE TESTING DEPENDING ON CUSTOMER REQUIREMENTS: • ULTRASONIC TESTING • DYE PENETRANT TESTING • RADIOGRAPHIC EXAMINATION • EDDY-CURRENT TESTING • VISUAL INSPECTION DIMENSIONAL INSPECTION FOR ROUND BAR: • OUTSIDE DIAMETER • STRAIGHTNESS • LENGTH • SURFACE FINISH • OVALITY • END CONDITION SURFACE FINISHING OF UDIMET 500 ROUND BAR DEPENDING ON THE REQUIRED PRODUCT CONDITION, ROUND BAR CAN BE SUPPLIED WITH FINISHES SUCH AS: • HOT FINISHED • COLD FINISHED • TURNED • GROUND • CENTERLESS GROUND • PEELED • POLISHED PRECISION GRINDING IS OFTEN SELECTED WHERE TIGHT DIMENSIONAL TOLERANCES AND IMPROVED SURFACE CONDITION ARE REQUIRED. UDIMET 500 ROUND BAR SIZES COMMERCIAL SUPPLIERS MAY OFFER UDIMET 500 IN A RANGE OF ROUND-BAR DIAMETERS, BUT SIZE AVAILABILITY DOES NOT ESTABLISH COMPLIANCE WITH AMS 5384 OR ANOTHER SPECIFICATION. A PURCHASE INQUIRY SHOULD SPECIFY: UNS N07500 + PRODUCT FORM + GOVERNING SPECIFICATION + REVISION + DIAMETER + LENGTH + CONDITION + TESTING + CERTIFICATION. EXAMPLE: UDIMET 500 / UNS N07500 NICKEL-BASE SUPERALLOY ROUND BAR, DIAMETER ___ MM, LENGTH ___ MM, SUPPLIED TO APPLICABLE ASTM/AMS WROUGHT-PRODUCT SPECIFICATION AND REVISION, SOLUTION TREATED AND PRECIPITATION HARDENED, WITH FULL MATERIAL TRACEABILITY AND INSPECTION CERTIFICATION. GLOBAL KEYWORDS FOR AMS 5384 AND UDIMET 500 FOR INTERNATIONAL SEARCH VISIBILITY, THE FOLLOWING KEYWORD CLUSTERS CLOSELY MATCH COMMON COMMERCIAL AND TECHNICAL SEARCH INTENT. PRIMARY KEYWORDS • AMS 5384 • AMS 5384 ROUND BAR • AMS 5384 MATERIAL • AMS 5384 SPECIFICATION • AMS 5384 ALLOY • AMS 5384 EQUIVALENT • AMS 5384 SUPPLIER • AMS 5384 MANUFACTURER • AMS 5384 MATERIAL SUPPLIER • AMS 5384 NICKEL ALLOY UDIMET 500 KEYWORDS • UDIMET 500 • UDIMET 500 ROUND BAR • UDIMET 500 BAR • UDIMET 500 ALLOY • UDIMET 500 SUPPLIER • UDIMET 500 MANUFACTURER • UDIMET 500 EQUIVALENT • UDIMET 500 SPECIFICATION • UDIMET 500 UNS N07500 • UDIMET 500 NICKEL ALLOY • UDIMET 500 CHEMICAL COMPOSITION • UDIMET 500 MECHANICAL PROPERTIES • UDIMET 500 HEAT TREATMENT • UDIMET 500 MACHINING • UDIMET 500 FORGING • UDIMET 500 PRICE UNS KEYWORDS • UNS N07500 • UNS N07500 ROUND BAR • UNS N07500 BAR • UNS N07500 EQUIVALENT • UNS N07500 SUPPLIER • UNS N07500 MANUFACTURER • UNS N07500 SPECIFICATION • UNS N07500 CHEMICAL COMPOSITION • UNS N07500 PROPERTIES • N07500 NICKEL ALLOY ASTM / AMS KEYWORDS • ASTM B637 N07500 • ASME SB637 N07500 • AMS 5751 UDIMET 500 • AMS 5753 UDIMET 500 • ASTM B637 ROUND BAR • NICKEL ALLOY ASTM B637 • PRECIPITATION HARDENING NICKEL ALLOY BAR • NICKEL ALLOY ROUND BAR • NICKEL SUPERALLOY ROUND BAR NOTE: I HAVE NOT REPRESENTED THESE AS VERIFIED WORLDWIDE MONTHLY SEARCH-VOLUME FIGURES. PUBLIC SEARCH ENGINES DO NOT EXPOSE A RELIABLE UNIVERSAL GLOBAL-VOLUME DATASET THROUGH ORDINARY WEB RESULTS. THE KEYWORD SET ABOVE IS INSTEAD BUILT AROUND HIGH-VALUE COMMERCIAL, SPECIFICATION, EQUIVALENT-GRADE AND PRODUCT-FORM SEARCH INTENT. FREQUENTLY ASKED QUESTIONS IS AMS 5384 A ROUND BAR SPECIFICATION? NO. AMS 5384 IS AN INVESTMENT-CASTING SPECIFICATION. SAE DESCRIBES IT AS A CORROSION- AND HEAT-RESISTANT NICKEL ALLOY IN THE FORM OF INVESTMENT CASTINGS. WHAT IS THE ALLOY ASSOCIATED WITH AMS 5384? IT IS ASSOCIATED WITH UDIMET 500 / UNS N07500, A NICKEL-CHROMIUM-COBALT PRECIPITATION-HARDENING SUPERALLOY. WHAT IS THE UNS NUMBER FOR UDIMET 500? THE UNS DESIGNATION IS N07500. WHAT IS THE WERKSTOFF NUMBER FOR UDIMET 500? UDIMET 500 IS COMMONLY IDENTIFIED AS W.NR. 2.4983) WHAT ASTM STANDARD IS ASSOCIATED WITH UDIMET 500 BAR? ASTM B637 COVERS APPLICABLE PRECIPITATION-HARDENABLE NICKEL-ALLOY ROD, BAR, FORGINGS AND FORGING STOCK, INCLUDING UNS N07500. WHAT ARE THE AMS SPECIFICATIONS ASSOCIATED WITH UDIMET 500 WROUGHT PRODUCTS? PUBLISHED TECHNICAL REFERENCES ASSOCIATE UDIMET 500 WITH AMS 5751 AND AMS 5753, DEPENDING ON PRODUCT REQUIREMENTS. IS UDIMET 500 THE SAME AS UNS N07500? UDIMET 500 IS THE COMMERCIAL/TRADE DESIGNATION COMMONLY ASSOCIATED WITH UNS N07500, BUT THE EXACT GOVERNING PRODUCT SPECIFICATION MUST STILL BE VERIFIED. IS UDIMET 500 SUITABLE FOR HIGH-TEMPERATURE APPLICATIONS? YES. IT IS A PRECIPITATION-HARDENABLE NICKEL-BASE SUPERALLOY DESIGNED FOR HIGH-TEMPERATURE STRENGTH, OXIDATION RESISTANCE AND CREEP/STRESS-RUPTURE PERFORMANCE. CONCLUSION AMS 5384 / UDIMET 500 / UNS N07500 REPRESENTS AN IMPORTANT NICKEL-BASE SUPERALLOY FAMILY FOR HIGH-TEMPERATURE AND CORROSION-RESISTANT APPLICATIONS. THE CRUCIAL TECHNICAL POINT FOR BUYERS IS THAT AMS 5384 SPECIFICALLY ADDRESSES INVESTMENT CASTINGS, WHILE UDIMET 500 ROUND BAR REQUIRES THE APPROPRIATE WROUGHT-PRODUCT SPECIFICATION, COMMONLY ENCOUNTERED THROUGH ASTM B637 AND AMS 5751/5753, DEPENDING ON THE REQUIRED PRODUCT AND APPLICATION. FOR INTERNATIONAL PROCUREMENT, THE MOST USEFUL IDENTIFICATION CHAIN IS: UDIMET 500 → UNS N07500 → W.NR. 2.4983 → DIN NICR18COMOALTI → SAE/AISI 684 → ASTM B637 / ASME SB-637 → APPLICABLE AMS 5751/5753 → AMS 5384 FOR THE INVESTMENT-CASTING FORM. FOR AEROSPACE AND CRITICAL-SERVICE PROCUREMENT, ALWAYS SPECIFY THE EXACT PRODUCT FORM AND GOVERNING SPECIFICATION/REVISION RATHER THAN RELYING ON “EQUIVALENT” NAMES ALONE.