AMS 5382 ROUND BAR MANUFACTURING: COMPLETE GUIDE TO UNS R30031, STELLITE 31, X-40 & HS-31 COBALT ALLOY TITLE: AMS 5382 ROUND BAR MANUFACTURING | UNS R30031 STELLITE 31 X-40 COBALT ALLOY – SPECIFICATIONS, COMPOSITION, APPLICATIONS & GLOBAL EQUIVALENTS META DESCRIPTION: DISCOVER AMS 5382 ROUND BAR MANUFACTURING, UNS R30031, STELLITE 31, X-40 AND HS-31 EQUIVALENTS, CHEMICAL COMPOSITION, CASTING PROCESS, ASTM SPECIFICATIONS, APPLICATIONS, MACHINING, QUALITY TESTING AND GLOBAL SUPPLY TERMINOLOGY. AMS 5382 ROUND BAR MANUFACTURING – COMPLETE GLOBAL MATERIAL GUIDE AMS 5382 IS A SPECIFICATION FOR A CORROSION- AND HEAT-RESISTANT COBALT-BASE ALLOY IN INVESTMENT-CAST FORM, IDENTIFIED WITH THE NOMINAL CHEMISTRY OF APPROXIMATELY 54% COBALT, 25.5% CHROMIUM, 10.5% NICKEL AND 7.5% TUNGSTEN. THE CURRENT SAE LISTING IDENTIFIES AMS 5382L, REVISED NOVEMBER 25, 2025) THEREFORE, AN IMPORTANT TECHNICAL DISTINCTION SHOULD BE MADE: AMS 5382 IS FUNDAMENTALLY AN INVESTMENT-CASTING SPECIFICATION, NOT A CONVENTIONAL WROUGHT-ROUND-BAR SPECIFICATION. THE ALLOY ASSOCIATED WITH AMS 5382 IS WIDELY IDENTIFIED AS UNS R30031, STELLITE 31, X-40/X40, AND HS-31) PARMANU DHATU NIGAM IDENTIFIES STELLITE 31 AS UNS R30031 AND LISTS AMS 5382 AND ASTM A732 GRADE 31 FOR CASTINGS. CONSEQUENTLY, WHEN THE MARKET SEARCHES FOR “AMS 5382 ROUND BAR, ” “AMS 5382 BAR, ” “UNS R30031 ROUND BAR, ” OR “STELLITE 31 ROUND BAR, ” SUPPLIERS SHOULD CLEARLY STATE WHETHER THE MATERIAL IS CAST ROUND BAR, MACHINED INVESTMENT-CAST STOCK, POWDER/EXTRUDED MATERIAL, OR ANOTHER CUSTOMER-SPECIFIC PRODUCT FORM, RATHER THAN IMPLYING THAT AMS 5382 ITSELF IS A GENERIC WROUGHT-BAR STANDARD. WHAT IS AMS 5382? AMS 5382 IS A SAE AEROSPACE MATERIAL SPECIFICATION COVERING A COBALT-BASE ALLOY USED FOR CORROSION- AND HEAT-RESISTANT INVESTMENT CASTINGS. THE CURRENT SAE RECORD DESCRIBES THE SPECIFICATION AS: • MATERIAL: COBALT ALLOY • BASE: COBALT • NOMINAL CR: 25.5% • NOMINAL NI: 10.5% • NOMINAL W: 7.5% • CONDITION: AS CAST • PRODUCT FORM COVERED BY AMS 5382: INVESTMENT CASTINGS • UNS: R30031 SAE'S REVISION HISTORY SHOWS THE SPECIFICATION ORIGINATED IN 1947 AND HAS PROGRESSED THROUGH MULTIPLE REVISIONS, WITH AMS 5382L REVISED IN 2025) AMS 5382 ROUND BAR – INTERNATIONAL EQUIVALENTS AND TRADE NAMES THE FOLLOWING NAMES ARE ENCOUNTERED IN INTERNATIONAL PURCHASING AND ENGINEERING SEARCHES. CATEGORY - DESIGNATION / NAME SAE AMS: AMS 5382 / AMS 5382L UNS R30031 COMMERCIAL ALLOY: STELLITE 31 TRADE/COMMON NAME: X-40 / X40 HISTORICAL/COMMON DESIGNATION: HS-31 CAST ALLOY DESIGNATION: MTEK 31 ASTM CAST REFERENCE: ASTM A732 GRADE 31 DIN DESIGNATION OFTEN ASSOCIATED: COCR25NIW ALLOY FAMILY: COBALT-CHROMIUM-NICKEL-TUNGSTEN ALLOY PRODUCT FAMILY: COBALT-BASE SUPERALLOY / HEAT-RESISTANT CAST ALLOY PARMANU DHATU NIGAM SPECIFICALLY LISTS CAST UNS R30031, ASTM A732, AND AMS 5382 AS CORRESPONDING SPECIFICATIONS FOR ITS MTEK 31 ALLOY. IMPORTANT NOTE ABOUT “EQUIVALENTS” NOT EVERY COMMERCIAL DESIGNATION IS AUTOMATICALLY A 100% SPECIFICATION-FOR-SPECIFICATION REPLACEMENT. FOR AEROSPACE, DEFENSE, TURBINE AND CRITICAL-SERVICE PURCHASING, THE CUSTOMER'S DRAWING AND PURCHASE SPECIFICATION SHOULD CONTROL. FOR EXAMPLE, STELLITE 31, X-40 AND HS-31 ARE WIDELY USED NAMES FOR R30031-TYPE MATERIAL, WHILE AMS 5382 SPECIFICALLY CONTROLS THE INVESTMENT-CASTING SPECIFICATION. AMS 5382 CHEMICAL COMPOSITION A REPRESENTATIVE COMPOSITION FOR STELLITE 31 / UNS R30031 IS: ELEMENT - TYPICAL / SPECIFICATION RANGE COBALT BALANCE CHROMIUM 24.5–26.5% NICKEL 9.5–11.5% TUNGSTEN 7.0–8.0% CARBON 0.45–0.55% IRON 2.0% MAX MANGANESE 1.0% MAX SILICON 1.0% MAX *THE EXACT ACCEPTANCE CHEMISTRY SHOULD ALWAYS BE CHECKED AGAINST THE APPLICABLE REVISION OF THE PURCHASING SPECIFICATION. COMMERCIAL REFERENCES GIVE THE ABOVE RANGES, WHILE PARMANU DHATU NIGAM LISTS NOMINAL VALUES OF APPROXIMATELY 26% CR, 10.5% NI, 7.5% W AND 0.5% C, WITH COBALT AS THE BALANCE. THE COMBINATION OF CHROMIUM, TUNGSTEN AND CARBON PROMOTES A CARBIDE-CONTAINING MICROSTRUCTURE WITHIN A COBALT-RICH MATRIX. THIS IS A MAJOR REASON FOR THE ALLOY'S HIGH-TEMPERATURE WEAR, EROSION AND CORROSION PERFORMANCE. AMS 5382 ROUND BAR MANUFACTURING PROCESS BECAUSE AMS 5382 COVERS INVESTMENT CASTINGS, AN APPROPRIATE AMS 5382 CAST-ROUND-BAR MANUFACTURING ROUTE GENERALLY INVOLVES CASTING THE ALLOY INTO A SUITABLE CYLINDRICAL GEOMETRY OR PRODUCING AN APPROVED CASTING FROM WHICH ROUND STOCK CAN SUBSEQUENTLY BE MACHINED. A TYPICAL MANUFACTURING SEQUENCE IS: RAW MATERIAL SELECTION → CHARGE PREPARATION → MELTING → CHEMISTRY ADJUSTMENT → INVESTMENT MOLD PREPARATION → PREHEATING → POURING → SOLIDIFICATION → KNOCKOUT → FETTLING → HEAT/CONDITION CONTROL AS APPLICABLE → INSPECTION → MACHINING → SURFACE FINISHING → FINAL INSPECTION → CERTIFICATION → PACKING 1) RAW MATERIAL SELECTION THE MANUFACTURING PROCESS BEGINS WITH CONTROLLED COBALT-BASE ALLOY CHARGE MATERIALS. THE PRODUCER SELECTS: • COBALT • CHROMIUM • NICKEL • TUNGSTEN • CARBON-BEARING ADDITIONS • IRON • MANGANESE • SILICON HIGH-QUALITY CHARGE MATERIALS HELP CONTROL TRACE ELEMENTS AND MINIMIZE CONTAMINATION. FOR AEROSPACE-QUALITY PRODUCTION, MELT TRACEABILITY IS PARTICULARLY IMPORTANT BECAUSE CHEMISTRY VARIATIONS CAN INFLUENCE CARBIDE FORMATION, CASTING BEHAVIOR AND FINAL PROPERTIES. 2) VACUUM OR CONTROLLED-ATMOSPHERE MELTING COBALT-BASE SUPERALLOYS SUCH AS R30031 REQUIRE CAREFUL MELTING PRACTICE. DEPENDING ON THE PRODUCER AND CUSTOMER'S REQUIREMENTS, MELTING MAY USE: • VACUUM INDUCTION MELTING • VACUUM MELTING • CONTROLLED-ATMOSPHERE MELTING • INVESTMENT-CASTING MELT SYSTEMS THE OBJECTIVE IS TO ACHIEVE: 1. CORRECT ALLOY CHEMISTRY 2. LOW CONTAMINATION 3. CONTROLLED GAS LEVELS 4. UNIFORM ALLOYING 5. REPEATABLE SOLIDIFICATION BEHAVIOR 3) CHEMICAL ANALYSIS AFTER MELTING, THE CHEMISTRY IS VERIFIED USING APPROPRIATE ANALYTICAL TECHNIQUES. TYPICAL QUALITY-CONTROL METHODS INCLUDE: • OPTICAL EMISSION SPECTROSCOPY • X-RAY FLUORESCENCE WHERE SUITABLE • COMBUSTION ANALYSIS FOR CARBON • LABORATORY VERIFICATION • MELT-LOT CHEMICAL CERTIFICATION THE FINAL HEAT MUST SATISFY THE CHEMISTRY REQUIREMENTS OF THE APPLICABLE SPECIFICATION. 4) INVESTMENT CASTING OF AMS 5382 THE DEFINING FEATURE OF AMS 5382 IS INVESTMENT CASTING. INVESTMENT CASTING, ALSO KNOWN AS: • LOST-WAX CASTING • PRECISION CASTING • PRECISION INVESTMENT CASTING • INVESTMENT MOULDING • LOST-WAX PRECISION CASTING IS PARTICULARLY USEFUL FOR PRODUCING COMPLEX COBALT-ALLOY COMPONENTS. FOR CYLINDRICAL OR ROUND-BAR-TYPE CAST STOCK, THE MOLD GEOMETRY IS DESIGNED TO ACHIEVE: • CONTROLLED DIAMETER • APPROPRIATE FEEDING • MINIMUM SHRINKAGE DEFECTS • SOUND SOLIDIFICATION • GOOD SURFACE QUALITY • ADEQUATE MACHINING ALLOWANCE AMS 5382'S EXCELLENT CASTABILITY HAS HISTORICALLY MADE THE ALLOY VALUABLE FOR GAS-TURBINE COMPONENTS. NASA DOCUMENTATION, FOR EXAMPLE, RECORDS AMS 5382/X-40 BEING SELECTED FOR TURBINE-VANE APPLICATIONS PARTLY BECAUSE OF ITS CASTABILITY AND HIGH-TEMPERATURE CORROSION RESISTANCE. 5) SOLIDIFICATION AND MICROSTRUCTURE DURING COOLING, THE ALLOY DEVELOPS A COBALT-RICH MATRIX CONTAINING HARD CARBIDE PHASES. THE RESULTING MICROSTRUCTURE CONTRIBUTES TO: • HIGH-TEMPERATURE HARDNESS • WEAR RESISTANCE • GALLING RESISTANCE • EROSION RESISTANCE • THERMAL-SHOCK RESISTANCE • CORROSION RESISTANCE STELLITE 31 IS DESCRIBED BY PARMANU DHATU NIGAM AS A COBALT-BASED ALLOY WHOSE PROPERTIES ARISE FROM COMPLEX CARBIDES DISPERSED WITHIN AN ALLOY MATRIX. 6) CASTING INSPECTION THE CAST ROUND STOCK OR CYLINDRICAL CASTING SHOULD BE INSPECTED FOR DEFECTS SUCH AS: • SHRINKAGE • POROSITY • CRACKS • INCLUSIONS • COLD SHUTS • MISRUNS • SURFACE DEFECTS • DIMENSIONAL DEVIATIONS DEPENDING ON THE APPLICATION, INSPECTION CAN INCLUDE: VISUAL INSPECTION USED TO IDENTIFY SURFACE DISCONTINUITIES. DIMENSIONAL INSPECTION DIAMETER, LENGTH, STRAIGHTNESS AND MACHINING ALLOWANCE ARE VERIFIED. RADIOGRAPHIC TESTING CAN BE SPECIFIED TO INVESTIGATE INTERNAL DISCONTINUITIES. LIQUID PENETRANT TESTING USEFUL FOR DETECTING SURFACE-CONNECTED CRACKS AND DISCONTINUITIES. ULTRASONIC TESTING MAY BE USED WHERE APPLICABLE TO INVESTIGATE INTERNAL INTEGRITY. THE EXACT NDT REQUIREMENTS SHOULD COME FROM THE CUSTOMER'S DRAWING, PURCHASE ORDER AND APPLICABLE SPECIFICATION—NOT FROM AN ASSUMED UNIVERSAL AMS 5382 REQUIREMENT. 7) AMS 5382 ROUND BAR MACHINING R30031 IS NOT CONSIDERED AN EASY MACHINING ALLOY. THE HARD CARBIDE-CONTAINING STRUCTURE MAKES MACHINING SUBSTANTIALLY MORE DEMANDING THAN ORDINARY CARBON STEEL OR STAINLESS STEEL. MACHINING MAY INVOLVE: • CARBIDE TOOLING • CERAMIC TOOLING FOR SUITABLE OPERATIONS • RIGID MACHINE SETUPS • SHORT TOOL OVERHANG • CONTROLLED CUTTING PARAMETERS • ADEQUATE COOLANT STRATEGY • LOW VIBRATION • FREQUENT TOOL INSPECTION POTENTIAL PRODUCTS INCLUDE: • ROUND BARS • SHAFTS • PINS • BUSHES • SLEEVES • RINGS • CYLINDRICAL BLANKS • VALVE COMPONENTS • TURBINE-RELATED COMPONENTS • WEAR-RESISTANT COMPONENTS HOWEVER, IF THE CUSTOMER SPECIFICALLY REQUIRES A WROUGHT ROUND BAR, THE SUPPLIER SHOULD VERIFY THE APPLICABLE WROUGHT SPECIFICATION RATHER THAN SIMPLY CERTIFYING IT AS AMS 5382. STELLITE 31 / AMS 5382 PHYSICAL PROPERTIES PARMANU DHATU NIGAM GIVES STELLITE 31 A NOMINAL DENSITY OF APPROXIMATELY 8.61 G/CM³ (0.311 LB/IN³) AND A MELTING RANGE OF APPROXIMATELY 1340–1395°C (2245–2545°F). REPORTED HARDNESS IS APPROXIMATELY 25–35 HRC, DEPENDING IN PART ON WORK HARDENING. PROPERTY - REPRESENTATIVE VALUE DENSITY ~8.61 G/CM³ DENSITY ~0.311 LB/IN³ MELTING RANGE ~1340–1395°C MELTING RANGE ~2245–2545°F HARDNESS ~25–35 HRC ALLOY BASE COBALT PRODUCT FAMILY CAST COBALT SUPERALLOY THESE SHOULD BE TREATED AS REPRESENTATIVE COMMERCIAL DATA RATHER THAN SUBSTITUTES FOR THE CERTIFIED REQUIREMENTS OF A PARTICULAR PURCHASE ORDER. HIGH-TEMPERATURE PERFORMANCE ONE OF THE PRINCIPAL ADVANTAGES OF STELLITE 31 / X-40 IS ITS PERFORMANCE AT ELEVATED TEMPERATURE. PARMANU DHATU NIGAM REPORTS STRONG TENSILE AND CREEP CHARACTERISTICS AND PARTICULARLY GOOD STRESS-RUPTURE PERFORMANCE AROUND 1700°F (926°C) AND 1800°F (980°C). IT ALSO DESCRIBES RESISTANCE TO OXIDIZING AND REDUCING ATMOSPHERES UP TO APPROXIMATELY 2100°F (1150°C). THIS MAKES THE MATERIAL ATTRACTIVE FOR: • GAS TURBINES • TURBINE NOZZLE COMPONENTS • TURBINE VANES • COMBUSTION COMPONENTS • HIGH-TEMPERATURE TOOLING • FURNACE COMPONENTS • HOT-GAS EROSION APPLICATIONS • HIGH-TEMPERATURE WEAR PARTS PARMANU DHATU NIGAM SUPERALLOY TECHNOLOGIES LIKEWISE IDENTIFIES X-40/HS-31 AS A CAST COBALT-BASE SUPERALLOY FOR TURBINE NOZZLE VANES AND COMBUSTION COMPONENTS. AMS 5382 APPLICATIONS AEROSPACE INDUSTRY AMS 5382 / R30031 IS ASSOCIATED WITH HIGH-TEMPERATURE AEROSPACE APPLICATIONS INCLUDING: • TURBINE NOZZLE VANES • TURBINE COMPONENTS • HOT-SECTION COMPONENTS • COMBUSTION HARDWARE • GAS-PATH COMPONENTS HISTORICAL NASA DOCUMENTATION SPECIFICALLY DESCRIBES AMS 5382 X-40 AS A TURBINE-VANE MATERIAL. GAS TURBINE INDUSTRY APPLICATIONS INCLUDE: • INDUSTRIAL GAS TURBINES • AIRCRAFT GAS TURBINES • NOZZLE VANES • COMBUSTION COMPONENTS • HOT-GAS EXPOSED COMPONENTS OIL & GAS POTENTIAL APPLICATIONS INCLUDE: • VALVE COMPONENTS • VALVE TRIM • WEAR-RESISTANT COMPONENTS • HIGH-TEMPERATURE COMPONENTS • CORROSION-RESISTANT COMPONENTS INDUSTRIAL FURNACES THE COMBINATION OF HIGH-TEMPERATURE STRENGTH AND THERMAL-SHOCK RESISTANCE CAN MAKE THE ALLOY SUITABLE FOR: • FURNACE TOOLING • SUPPORTS • FIXTURES • HIGH-TEMPERATURE WEAR COMPONENTS AMS 5382 VS STELLITE 31 VS X-40 VS HS-31 PARMANU DHATU NIGAM EXPLICITLY CONNECTS STELLITE 31, UNS R30031, AMS 5382 AND ASTM A732 GRADE 31) NAME - RELATIONSHIP AMS 5382: SAE MATERIAL SPECIFICATION FOR INVESTMENT CASTINGS UNS R30031: UNIFIED NUMBERING SYSTEM MATERIAL IDENTIFICATION STELLITE 31: COMMERCIAL/TRADE DESIGNATION X-40 / X40: COMMON ALLOY DESIGNATION HS-31: HISTORICAL/COMMON ALLOY DESIGNATION MTEK 31: PRODUCER DESIGNATION FOR R30031-TYPE ALLOY ASTM A732 GRADE 31: CAST-ALLOY SPECIFICATION REFERENCE INTERNATIONAL SEARCH TERMS FOR AMS 5382 FOR GLOBAL, BUYERS MAY USE SIGNIFICANTLY DIFFERENT TERMINOLOGY. UNITED STATES / NORTH AMERICA • AMS 5382 • AMS5382 • AMS 5382 ROUND BAR • AMS 5382 BAR • UNS R30031 • R30031 ROUND BAR • STELLITE 31 • STELLITE 31 ROUND BAR • X-40 COBALT ALLOY • X40 ALLOY • HS-31 ALLOY • COBALT ALLOY ROUND BAR • COBALT SUPERALLOY • COBALT-BASED ALLOY EUROPE • COCRNIW ALLOY • COCR25NIW • COBALT CHROMIUM NICKEL TUNGSTEN ALLOY • COBALT ALLOY BAR • STELLITE 31 EQUIVALENT • X40 WERKSTOFF • COBALT HIGH-TEMPERATURE ALLOY INDIA • AMS 5382 ROUND BAR SUPPLIER • AMS 5382 ROUND BAR MANUFACTURER • UNS R30031 ROUND BAR • STELLITE 31 ROUND BAR SUPPLIER • STELLITE 31 BAR MANUFACTURER • X40 ALLOY ROUND BAR • HS31 ROUND BAR • COBALT ALLOY ROUND BAR • COBALT SUPERALLOY SUPPLIER • AEROSPACE COBALT ALLOY MIDDLE EAST • AMS 5382 SUPPLIER • STELLITE 31 SUPPLIER • UNS R30031 SUPPLIER • COBALT ALLOY MANUFACTURER • HIGH TEMPERATURE ALLOY SUPPLIER • TURBINE ALLOY SUPPLIER CHINA / EAST ASIA • R30031 COBALT ALLOY • X-40 COBALT ALLOY • STELLITE 31 EQUIVALENT • COBALT CHROMIUM TUNGSTEN ALLOY • COBALT SUPERALLOY BAR • PRECISION CAST COBALT ALLOY COMMON NAMES, TRADE NAMES AND COMMERCIAL SEARCH NAMES THE FOLLOWING TERMS CAN BE INCORPORATED INTO PRODUCT PAGES WHERE TECHNICALLY APPROPRIATE: AMS 5382, AMS5382, AMS 5382L, UNS R30031, R30031, STELLITE 31, STELLITE 31, X-40, X40, HS-31, HS31, COCRNIW ALLOY, COBALT-CHROMIUM-NICKEL-TUNGSTEN ALLOY, COBALT-BASE SUPERALLOY, COBALT-BASED HEAT-RESISTANT ALLOY, COBALT CORROSION-RESISTANT ALLOY, COBALT HIGH-TEMPERATURE ALLOY, MTEK 31. HISTORICAL LITERATURE ALSO CONTAINS MULTIPLE COMMERCIAL AND DESIGNATION VARIANTS. AN IARC REFERENCE LISTS NUMEROUS NAMES ASSOCIATED WITH THIS ALLOY FAMILY, INCLUDING HS-31, STELLITE 31, X-40 AND OTHER TRADE/DESIGNATION VARIANTS. RELATED STANDARDS AND SPECIFICATIONS THE PRINCIPAL STANDARDS THAT SHOULD BE INVESTIGATED WHEN PURCHASING OR MANUFACTURING THIS ALLOY INCLUDE: SAE AMS 5382 PRIMARY AEROSPACE MATERIAL SPECIFICATION FOR THE ALLOY IN INVESTMENT-CAST FORM. THE CURRENT SAE LISTING IS AMS 5382L. UNS R30031 MATERIAL IDENTIFICATION NUMBER ASSOCIATED WITH STELLITE 31/X-40-TYPE COBALT ALLOY. ASTM A732 GRADE 31 A CAST-MATERIAL REFERENCE ASSOCIATED WITH STELLITE 31/ UNS R30031) DIN / EUROPEAN NAMING COCR25NIW IS ENCOUNTERED AS AN ASSOCIATED INTERNATIONAL DESIGNATION, ALTHOUGH EQUIVALENCY SHOULD BE VERIFIED AGAINST THE SPECIFIC CHEMISTRY AND PRODUCT-FORM REQUIREMENTS. AMS 5382 QUALITY-CONTROL CHECKLIST A PROFESSIONAL MANUFACTURER SHOULD MAINTAIN TRACEABILITY FOR: • HEAT NUMBER • MELT NUMBER • RAW-MATERIAL CERTIFICATES • CHEMICAL ANALYSIS • CASTING BATCH • MOLD/PRODUCTION IDENTIFICATION • DIMENSIONAL INSPECTION • SURFACE INSPECTION • NDT RESULTS WHERE SPECIFIED • MECHANICAL TESTING WHERE SPECIFIED • HARDNESS WHERE REQUIRED • METALLOGRAPHIC EXAMINATION WHERE REQUIRED • FINAL MACHINING INSPECTION • MATERIAL TEST CERTIFICATE • CERTIFICATE OF CONFORMITY FOR AEROSPACE PROCUREMENT, DOCUMENTATION AND TRACEABILITY CAN BE AS IMPORTANT AS THE PHYSICAL MATERIAL ITSELF. AMS 5382 ROUND BAR DIMENSIONS BECAUSE AMS 5382 IS AN INVESTMENT-CASTING SPECIFICATION RATHER THAN A CONVENTIONAL DIMENSIONAL ROUND-BAR SPECIFICATION, DIMENSIONS SHOULD NORMALLY BE AGREED BETWEEN THE BUYER AND MANUFACTURER. TYPICAL COMMERCIAL REQUIREMENTS CAN SPECIFY: • OUTSIDE DIAMETER • LENGTH • DIAMETER TOLERANCE • STRAIGHTNESS • SURFACE FINISH • MACHINING ALLOWANCE • CUT LENGTH • END CONDITION • CASTING CONDITION • FINISHED-MACHINED CONDITION FOR EXAMPLE, A PURCHASE INQUIRY COULD IDENTIFY: UNS R30031 / STELLITE 31 / X-40, AMS 5382, CAST CYLINDRICAL BAR, SPECIFIED DIAMETER × LENGTH, INSPECTION AND CERTIFICATION AS REQUIRED BY PURCHASE ORDER. AMS 5382 ROUND BAR VS CONVENTIONAL WROUGHT BAR THIS DISTINCTION IS IMPORTANT FOR AND TECHNICAL ACCURACY. AMS 5382 / R30031 CAST PRODUCT PRIMARY ROUTE: INVESTMENT CASTING AMS 5382 APPLICABILITY: YES UNS R30031 STELLITE 31/X-40: YES MICROSTRUCTURE: CAST DIMENSIONAL FREEDOM: HIGH FOR CAST GEOMETRY MACHINING: OFTEN REQUIRED AEROSPACE USE: YES CONVENTIONAL WROUGHT ROUND BAR PRIMARY ROUTE: FORGING/ROLLING/EXTRUSION AMS 5382 APPLICABILITY: NOT AUTOMATICALLY UNS MUST VERIFY STELLITE 31/X-40: DEPENDS ON PRODUCT ROUTE MICROSTRUCTURE: WROUGHT DIMENSIONAL FREEDOM: CONTROLLED BY MILL PROCESS MACHINING: OFTEN REQUIRED AEROSPACE USE: DEPENDS ON APPROVED SPECIFICATION NASA RESEARCH ALSO DOCUMENTS EXTRUDED HS-31/X-40 BARS MADE FROM PREALLOYED POWDERS, DEMONSTRATING THAT R30031-FAMILY MATERIAL CAN EXIST IN OTHER MANUFACTURING FORMS. THAT DOES NOT, HOWEVER, MEAN THOSE PRODUCTS AUTOMATICALLY QUALIFY AS AMS 5382 INVESTMENT CASTINGS. WHY CHOOSE STELLITE 31 / X-40? THE MATERIAL IS ATTRACTIVE WHERE ENGINEERS REQUIRE A COMBINATION OF: • HIGH-TEMPERATURE STRENGTH • CREEP RESISTANCE • STRESS-RUPTURE RESISTANCE • WEAR RESISTANCE • GALLING RESISTANCE • CORROSION RESISTANCE • OXIDATION RESISTANCE • THERMAL-SHOCK RESISTANCE • HOT-GAS EROSION RESISTANCE • HIGH-TEMPERATURE DIMENSIONAL STABILITY PARMANU DHATU NIGAM SPECIFICALLY HIGHLIGHTS ITS HIGH-TEMPERATURE TENSILE AND CREEP PROPERTIES, RESISTANCE TO OXIDIZING/REDUCING ATMOSPHERES, AND RESISTANCE TO THERMAL AND MECHANICAL SHOCK. AMS 5382 ROUND BAR MANUFACTURING: KEYWORD CLUSTER FOR A HIGH-VOLUME INTERNATIONAL PRODUCT PAGE, THE FOLLOWING KEYWORD GROUPS ARE USEFUL. PRIMARY KEYWORDS • AMS 5382 • AMS 5382 ROUND BAR • AMS 5382 BAR • UNS R30031 • UNS R30031 ROUND BAR • STELLITE 31 • STELLITE 31 ROUND BAR • X-40 ALLOY • X40 ALLOY • HS-31 ALLOY COMMERCIAL KEYWORDS • AMS 5382 MANUFACTURER • AMS 5382 SUPPLIER • AMS 5382 EXPORTER • AMS 5382 STOCKIST • AMS 5382 DISTRIBUTOR • AMS 5382 ROUND BAR MANUFACTURER • AMS 5382 ROUND BAR SUPPLIER • UNS R30031 MANUFACTURER • UNS R30031 SUPPLIER • STELLITE 31 MANUFACTURER • STELLITE 31 SUPPLIER • X40 ALLOY SUPPLIER • COBALT ALLOY MANUFACTURER • COBALT SUPERALLOY MANUFACTURER LONG-TAIL KEYWORDS • AMS 5382 CHEMICAL COMPOSITION • AMS 5382 SPECIFICATION • AMS 5382 MATERIAL PROPERTIES • AMS 5382 EQUIVALENT • AMS 5382 UNS NUMBER • AMS 5382 ASTM EQUIVALENT • AMS 5382 STELLITE 31 EQUIVALENT • UNS R30031 CHEMICAL COMPOSITION • UNS R30031 EQUIVALENT • STELLITE 31 CHEMICAL COMPOSITION • STELLITE 31 MATERIAL PROPERTIES • STELLITE 31 X40 EQUIVALENT • X40 COBALT ALLOY PROPERTIES • HS31 COBALT ALLOY • COBALT CHROMIUM NICKEL TUNGSTEN ALLOY • COBALT HIGH TEMPERATURE ROUND BAR • AEROSPACE COBALT ALLOY • TURBINE COBALT ALLOY FREQUENTLY ASKED QUESTIONS WHAT IS AMS 5382? AMS 5382 IS A SAE SPECIFICATION COVERING A CORROSION- AND HEAT-RESISTANT COBALT-BASE ALLOY IN INVESTMENT-CAST FORM. THE CURRENT REVISION LISTED BY SAE IS AMS 5382L. WHAT IS THE UNS NUMBER FOR AMS 5382? THE ASSOCIATED UNS DESIGNATION IS R30031) IS AMS 5382 THE SAME AS STELLITE 31? AMS 5382 IS THE APPLICABLE MATERIAL SPECIFICATION, WHILE STELLITE 31 IS A COMMERCIAL/TRADE NAME ASSOCIATED WITH UNS R30031) THEY SHOULD NOT BE TREATED AS INTERCHANGEABLE TERMINOLOGY IN EVERY PURCHASING CONTEXT. WHAT IS X-40 ALLOY? X-40 IS A COMMON DESIGNATION FOR THE COBALT-BASE ALLOY ASSOCIATED WITH UNS R30031 / STELLITE 31 / HS-31) WHAT IS THE COMPOSITION OF STELLITE 31? REPRESENTATIVE NOMINAL CHEMISTRY IS APPROXIMATELY 26% CHROMIUM, 10.5% NICKEL, 7.5% TUNGSTEN AND 0.5% CARBON, WITH COBALT AS THE BALANCE. IS AMS 5382 A WROUGHT ROUND-BAR SPECIFICATION? NO. AMS 5382 SPECIFICALLY COVERS INVESTMENT CASTINGS. A SUPPLIER OFFERING “AMS 5382 ROUND BAR” SHOULD CLARIFY THE CASTING/PRODUCT ROUTE AND CERTIFICATION BASIS. WHAT IS THE ASTM EQUIVALENT? ASTM A732 GRADE 31 IS IDENTIFIED BY PARMANU DHATU NIGAM AND OTHER CASTING REFERENCES WITH STELLITE 31/R30031) WHERE IS STELLITE 31 USED? TYPICAL APPLICATIONS INCLUDE GAS TURBINES, TURBINE NOZZLE VANES, COMBUSTION COMPONENTS, HIGH-TEMPERATURE TOOLING AND HOT-GAS EROSION ENVIRONMENTS. CONCLUSION AMS 5382 / UNS R30031 / STELLITE 31 / X-40 / HS-31 IS A HIGH-PERFORMANCE COBALT-BASE ALLOY DESIGNED FOR DEMANDING HIGH-TEMPERATURE AND CORROSIVE ENVIRONMENTS. ITS APPROXIMATELY 26% CHROMIUM, 10.5% NICKEL, 7.5% TUNGSTEN AND 0.5% CARBON NOMINAL CHEMISTRY PROVIDES A COMBINATION OF HIGH-TEMPERATURE STRENGTH, CARBIDE-BASED WEAR RESISTANCE, THERMAL-SHOCK RESISTANCE AND OXIDATION/CORROSION PERFORMANCE. FOR MANUFACTURERS AND EXPORTERS, THE MOST IMPORTANT TECHNICAL POINT IS THAT AMS 5382 IS AN INVESTMENT-CASTING SPECIFICATION. THEREFORE, A WEBPAGE TARGETING “AMS 5382 ROUND BAR, ” “AMS 5382 BAR, ” “UNS R30031 ROUND BAR, ” AND “STELLITE 31 ROUND BAR” SHOULD ACCURATELY EXPLAIN THE CASTING ROUTE, DIMENSIONAL CUSTOMIZATION AND CERTIFICATION BASIS RATHER THAN PRESENTING AMS 5382 AS A GENERIC WROUGHT-BAR STANDARD. THE STRONGEST GLOBAL SEARCH POSITIONING CAN COMBINE THE SPECIFICATION NAME WITH THE MATERIAL'S MAJOR COMMERCIAL IDENTITIES: AMS 5382, AMS 5382L, UNS R30031, STELLITE 31, X-40, X40, HS-31, COBALT ALLOY, COBALT SUPERALLOY, CO-CR-NI-W ALLOY, ASTM A732 GRADE 31 AND AEROSPACE TURBINE ALLOY. SOURCE BASIS: SAE INTERNATIONAL'S AMS 5382 RECORD, PARMANU DHATU NIGAM - STELLITE'S ALLOYS - STELLITE 31 TECHNICAL INFORMATION, PARMANU DHATU NIGAM'S R30031 SPECIFICATION CROSS-REFERENCE, NASA TECHNICAL LITERATURE AND ADDITIONAL INTERNATIONAL ALLOY REFERENCES.