AIRESIST 213 ROUND BAR MANUFACTURING: COMPLETE GUIDE TO AR-213 COBALT-BASED SUPERALLOY, COMPOSITION, PROPERTIES, STANDARDS, EQUIVALENTS, APPLICATIONS & GLOBAL KEYWORDS AIRESIST 213 ROUND BAR IS A SPECIALIZED COBALT-BASED HEAT-RESISTANT SUPERALLOY ASSOCIATED WITH THE HISTORICAL AIRESIST/AR-213 ALLOY FAMILY. IT IS PARTICULARLY RELEVANT TO HIGH-TEMPERATURE GAS-TURBINE AND AEROSPACE APPLICATIONS WHERE OXIDATION, SULFIDATION, ELEVATED-TEMPERATURE STRENGTH, AND DIMENSIONAL STABILITY ARE IMPORTANT. ASM REFERENCES CLASSIFY AIRESIST 213 AMONG COBALT-BASE SUPERALLOYS AND IDENTIFY IT AS A WROUGHT ALLOY, WHILE HISTORICAL TECHNICAL LITERATURE DESCRIBES APPLICATIONS INCLUDING COMBUSTION-CHAMBER COMPONENTS. IMPORTANT SPECIFICATION NOTE: AIRESIST 213 SHOULD NOT AUTOMATICALLY BE ASSIGNED A UNS, ASTM, AMS, EN, DIN, JIS, OR EQUIVALENT GRADE NUMBER SIMPLY BECAUSE A SUPPLIER LISTS ONE. THE AUTHORITATIVE TECHNICAL REFERENCES LOCATED FOR THIS ALLOY IDENTIFY IT PRIMARILY BY THE AIRESIST 213 / AR-213 DESIGNATION AND DO NOT ESTABLISH A DIRECT MODERN ASTM/AMS/EN BAR SPECIFICATION. THEREFORE, ANY ROUND BAR SHOULD BE MANUFACTURED AGAINST THE CUSTOMER'S DRAWING, PURCHASE SPECIFICATION, HISTORICAL MATERIAL SPECIFICATION, OR AGREED INSPECTION STANDARD. 1) WHAT IS AIRESIST 213 ROUND BAR? AIRESIST 213 ROUND BAR IS A ROUND-SECTION PRODUCT MANUFACTURED FROM AIRESIST 213 (AR-213), A COBALT-BASE HIGH-TEMPERATURE ALLOY. IT IS COMMONLY DESCRIBED USING TERMS SUCH AS: • AIRESIST 213 • AIRESIST 213 ALLOY • AIRESIST 213 COBALT ALLOY • AIRESIST 213 SUPERALLOY • AR-213 • AR 213 • AIRESIST 213 ROUND BAR • AIRESIST 213 BAR • AIRESIST 213 ROD • AIRESIST 213 METAL • COBALT-BASED SUPERALLOY BAR • COBALT HEAT-RESISTANT ALLOY BAR • HIGH-TEMPERATURE COBALT ALLOY • AEROSPACE COBALT ALLOY • GAS-TURBINE COBALT ALLOY ASM DATA IDENTIFIES THE ALLOY AS AIRESIST 213 (AR-213) AND GIVES ITS TYPICAL COMPOSITION AS APPROXIMATELY 66% CO, 19% CR, 6.5% TA, 4.7% W, 3.5% AL, 0.18% C, 0.15% ZR AND 0.1% Y. 2) AIRESIST 213 INTERNATIONAL DESIGNATIONS & TRADE NAMES CATEGORY - DESIGNATION / DESCRIPTION PRIMARY ALLOY NAME: AIRESIST 213 SHORT DESIGNATION: AR-213 / AR 213 ALLOY FAMILY: COBALT-BASE SUPERALLOY METALLURGICAL CLASS: WROUGHT HEAT-RESISTANT COBALT ALLOY COMMON PRODUCT TERM: AIRESIST 213 ROUND BAR PRODUCT SYNONYMS: AIRESIST 213 BAR, ROD, ROUND ROD HISTORICAL ASSOCIATION: AIRESEARCH / AIRESIST ALLOY FAMILY GENERIC DESCRIPTION: COBALT-CHROMIUM-TUNGSTEN-TANTALUM-ALUMINUM ALLOY APPLICATION DESCRIPTION: HIGH-TEMPERATURE GAS-TURBINE / AEROSPACE ALLOY HISTORICAL ASM/TECHNICAL REFERENCES USE AIRESIST 213 (AR-213) RATHER THAN ASSIGNING IT A CONVENTIONAL UNS NUMBER. A PNNL COMPILATION OF WROUGHT ALLOYS LIKEWISE LISTS AIRESIST 213 WITHOUT A UNS DESIGNATION. IMPORTANT DISTINCTION AR-213 IS NOT THE SAME GRADE AS: • HAYNES 25 / L-605 • HAYNES 188 • STELLITE 6 • STELLITE 21 • MAR-M 509 • MAR-M 302 • MAR-M 918 • AIRESIST 13 • AIRESIST 215 THESE ALLOYS MAY APPEAR IN THE SAME COBALT-BASE HEAT-RESISTANT ALLOY CATEGORY, BUT THEY HAVE MATERIALLY DIFFERENT CHEMISTRIES AND PROPERTIES. PARMANU DHATU NIGAM, FOR EXAMPLE, GROUPS AIRESIST 213 WITH HAYNES 25, HAYNES 188 AND STELLITE AS COBALT-BASED HEAT-RESISTANT MATERIALS RATHER THAN TREATING THEM AS IDENTICAL GRADES. 3) AIRESIST 213 CHEMICAL COMPOSITION A WIDELY CITED NOMINAL/TYPICAL COMPOSITION IS: ELEMENT - TYPICAL CONTENT, WT.% COBALT BALANCE / APPROXIMATELY 64–66 CHROMIUM 19–20 NICKEL APPROXIMATELY 0–0.5 TUNGSTEN 4.7 TANTALUM 6.5 ALUMINUM 3.5 CARBON 0.18–0.20 ZIRCONIUM 0.15 YTTRIUM 0.10 IRON GENERALLY MINOR/RESIDUAL MANGANESE MINOR/RESIDUAL SILICON MINOR/RESIDUAL ASM'S COBALT-ALLOY DATA GIVES 66.0 CO, 19.0 CR, 6.5 TA, 4.7 W, 3.5 AL, 0.18 C, 0.15 ZR AND 0.1 Y AS THE TYPICAL COMPOSITION. OTHER TECHNICAL TABLES REPORT APPROXIMATELY 64 CO, 20 CR, 6.5 TA, 4.5–4.7 W, 3.5 AL, 0.20 C, 0.15 ZR AND 0.1 Y, ILLUSTRATING WHY A PURCHASE SPECIFICATION SHOULD CONTROL THE FINAL CHEMISTRY. WHY THESE ALLOYING ELEMENTS MATTER COBALT (CO) FORMS THE PRINCIPAL MATRIX AND SUPPORTS ELEVATED-TEMPERATURE STRENGTH. CHROMIUM (CR) CONTRIBUTES STRONGLY TO OXIDATION AND CORROSION RESISTANCE. TUNGSTEN (W) PROVIDES SOLID-SOLUTION STRENGTHENING AND CONTRIBUTES TO HIGH-TEMPERATURE MECHANICAL PERFORMANCE. TANTALUM (TA) SUPPORTS REFRACTORY STRENGTHENING AND HIGH-TEMPERATURE STABILITY. ALUMINUM (AL) CONTRIBUTES TO OXIDATION RESISTANCE AND HIGH-TEMPERATURE STRENGTHENING MECHANISMS. CARBON (C), ZIRCONIUM (ZR) AND YTTRIUM (Y) HELP CONTROL MICROSTRUCTURE, CARBIDE/PRECIPITATE BEHAVIOR AND HIGH-TEMPERATURE OXIDATION PERFORMANCE. HISTORICAL NASA MATERIAL DESCRIBES AIRESIST ALLOYS AS DERIVING CORROSION RESISTANCE FROM CHROMIUM, ALUMINUM AND YTTRIUM AND STRENGTH FROM REFRACTORY-METAL CARBIDES. 4) AIRESIST 213 ROUND BAR MANUFACTURING PROCESS MANUFACTURING AIRESIST 213 ROUND BAR REQUIRES CONSIDERABLY MORE CONTROL THAN CONVENTIONAL STAINLESS-STEEL OR CARBON-STEEL BAR PRODUCTION. A TYPICAL MANUFACTURING ROUTE IS: RAW MATERIAL SELECTION → VACUUM MELTING → CHEMICAL REFINEMENT → INGOT FORMATION → HOMOGENIZATION → HOT WORKING → BAR CONVERSION → HEAT TREATMENT → STRAIGHTENING → MACHINING/GRINDING → INSPECTION → MARKING → PACKING HISTORICAL NASA LITERATURE SPECIFICALLY IDENTIFIES AIRESIST 213 AS A WROUGHT COBALT-BASE ALLOY REQUIRING VACUUM MELTING. STEP 1 — RAW MATERIAL SELECTION HIGH-PURITY ALLOYING MATERIALS ARE SELECTED FOR: • COBALT • CHROMIUM • TUNGSTEN • TANTALUM • ALUMINUM • CARBON • ZIRCONIUM • YTTRIUM • CONTROLLED NICKEL AND RESIDUAL ELEMENTS THE QUALITY OF STARTING MATERIALS IS IMPORTANT BECAUSE TRACE-ELEMENT VARIATIONS CAN AFFECT HIGH-TEMPERATURE BEHAVIOR. STEP 2 — VACUUM MELTING AIRESIST 213 IS HISTORICALLY ASSOCIATED WITH VACUUM MELTING. VACUUM MELTING HELPS CONTROL: • DISSOLVED GASES • OXIDATION • UNWANTED INCLUSIONS • VOLATILE ELEMENTS • CHEMICAL HOMOGENEITY • CLEANLINESS NASA DOCUMENTATION SPECIFICALLY STATES THAT AIRESIST 213 WAS AMONG NEWLY INTRODUCED WROUGHT COBALT-BASE ALLOYS REQUIRING VACUUM MELTING. MODERN PRODUCTION MAY USE A QUALIFIED VACUUM MELTING/REFINING ROUTE APPROPRIATE TO THE CUSTOMER'S SPECIFICATION AND REQUIRED PRODUCT QUALITY. STEP 3 — INGOT PRODUCTION THE MOLTEN ALLOY IS SOLIDIFIED INTO AN INGOT OR SUITABLE PRIMARY-WORKSTOCK FORM. CRITICAL CONTROLS INCLUDE: • SEGREGATION • SHRINKAGE • POROSITY • INCLUSIONS • MACROSTRUCTURE • CHEMICAL HOMOGENEITY FOR AEROSPACE-GRADE APPLICATIONS, INTERNAL CLEANLINESS IS PARTICULARLY IMPORTANT. STEP 4 — HOMOGENIZATION A CONTROLLED HOMOGENIZATION TREATMENT CAN BE USED TO REDUCE CHEMICAL SEGREGATION DEVELOPED DURING SOLIDIFICATION. THE ACTUAL: • TEMPERATURE • HOLDING TIME • COOLING METHOD MUST BE ESTABLISHED FROM THE QUALIFIED MATERIAL-PROCESSING SPECIFICATION RATHER THAN COPIED FROM ANOTHER COBALT ALLOY. 5) HOT WORKING OF AIRESIST 213 AFTER PRIMARY MELTING AND CONDITIONING, THE ALLOY CAN BE CONVERTED INTO WROUGHT STOCK THROUGH CONTROLLED THERMOMECHANICAL PROCESSING. POTENTIAL OPERATIONS INCLUDE: • HOT FORGING • COGGING • HOT ROLLING • ROTARY FORGING • BAR REDUCTION • INTERMEDIATE ANNEALING • CONTROLLED COOLING BECAUSE AIRESIST 213 IS A HEAT-RESISTANT SUPERALLOY, DEFORMATION TEMPERATURE AND REDUCTION SCHEDULE ARE CRITICAL. THE OBJECTIVE IS TO ACHIEVE: • SOUND INTERNAL STRUCTURE • CONTROLLED GRAIN SIZE • REDUCED SEGREGATION • APPROPRIATE RECRYSTALLIZATION • DIMENSIONAL CONSISTENCY • REQUIRED MECHANICAL PROPERTIES ASM LITERATURE CATEGORIZES AIRESIST 213 AMONG WROUGHT HEAT-RESISTANT ALLOYS. 6) CONVERSION INTO AIRESIST 213 ROUND BAR ONCE THE MATERIAL HAS BEEN CONVERTED INTO WROUGHT STOCK, ROUND BAR CAN BE PRODUCED THROUGH SUITABLE HOT-WORKING AND FINISHING OPERATIONS. DEPENDING ON DIAMETER AND REQUIRED CONDITION, PRODUCTION MAY INVOLVE: FORGED ROUND BAR LARGE-DIAMETER MATERIAL CAN BE PRODUCED THROUGH CONTROLLED FORGING. ROLLED ROUND BAR SMALLER OR INTERMEDIATE DIMENSIONS CAN POTENTIALLY BE OBTAINED THROUGH HOT ROLLING. COLD FINISHED BAR WHERE SUITABLE FOR THE ALLOY AND SPECIFICATION, SUBSEQUENT COLD WORKING MAY IMPROVE: • DIMENSIONAL TOLERANCE • SURFACE FINISH • STRAIGHTNESS GROUND ROUND BAR GRINDING CAN PROVIDE CLOSER DIMENSIONAL CONTROL AND IMPROVED SURFACE CONDITION. CENTERLESS GROUND BAR CENTERLESS GRINDING MAY BE USED FOR PRECISION ROUND PRODUCTS WHERE APPROPRIATE. 7) HEAT TREATMENT HEAT TREATMENT MUST BE SPECIFIED CAREFULLY FOR AIRESIST 213. DEPENDING UPON THE REQUIRED CONDITION, PROCESSING MAY INCLUDE: • SOLUTION TREATMENT • STABILIZATION TREATMENT • ANNEALING • CONTROLLED COOLING • STRESS RELIEF HOWEVER, THERE IS NO BASIS FOR ASSUMING THAT A GENERIC ASTM STAINLESS-STEEL HEAT-TREATMENT SCHEDULE APPLIES TO AIRESIST 213. FOR AEROSPACE OR CRITICAL APPLICATIONS, THE CUSTOMER'S MATERIAL SPECIFICATION SHOULD DEFINE: • HEATING RATE • TREATMENT TEMPERATURE • HOLDING TIME • ATMOSPHERE • COOLING RATE • FURNACE REQUIREMENTS • HARDNESS/PROPERTY REQUIREMENTS 8) TYPICAL AIRESIST 213 MECHANICAL PROPERTIES PUBLISHED ASM DATA REPORTS THE FOLLOWING REPRESENTATIVE PROPERTIES FOR AR-213: TEMPERATURE 21°C / 70°F TENSILE STRENGTH ~1120 MPA / 162 KSI YIELD STRENGTH: ~625 MPA / 91 KSI ELONGATION ~14% TEMPERATURE 650°C / 1200°F TENSILE STRENGTH ~960 MPA / 139 KSI YIELD STRENGTH: ~455 MPA / 66 KSI ELONGATION ~28% TEMPERATURE 760°C / 1400°F TENSILE STRENGTH ~485 MPA / 70 KSI YIELD STRENGTH: ~385 MPA / 56 KSI ELONGATION ~47% TEMPERATURE 870°C / 1600°F TENSILE STRENGTH ~315 MPA / 46 KSI YIELD STRENGTH: ~220 MPA / 32 KSI ELONGATION ~55% THESE ARE REPRESENTATIVE PUBLISHED VALUES, NOT GUARANTEED PURCHASE VALUES FOR EVERY ROUND-BAR CONDITION. PRODUCT DIAMETER, PROCESSING HISTORY, HEAT TREATMENT AND TEST METHOD CAN CHANGE RESULTS. 9) DENSITY OF AIRESIST 213 ASM'S PUBLISHED DATA GIVES A DENSITY OF APPROXIMATELY: 8.51 G/CM³ AT 20°C OR APPROXIMATELY: 0.307 LB/IN³. THIS IS USEFUL FOR: • WEIGHT CALCULATIONS • MATERIAL ESTIMATING • STOCK CALCULATIONS • CNC PROGRAMMING • SHIPPING CALCULATIONS • INVENTORY MANAGEMENT 10) HIGH-TEMPERATURE PERFORMANCE AIRESIST 213 WAS DEVELOPED FOR DEMANDING ELEVATED-TEMPERATURE ENVIRONMENTS. PUBLISHED TECHNICAL DATA IDENTIFIES ITS RESISTANCE TO: • OXIDATION • SULFIDATION • HIGH-TEMPERATURE DEGRADATION HISTORICAL TECHNICAL LITERATURE ALSO IDENTIFIES APPLICATIONS IN GAS-TURBINE ENVIRONMENTS. THIS MAKES AR-213 RELEVANT TO COMPONENTS EXPOSED TO: • HOT COMBUSTION GASES • THERMAL CYCLING • CORROSIVE COMBUSTION PRODUCTS • HIGH-TEMPERATURE OXIDATION • SULFUR-CONTAINING ENVIRONMENTS 11) AIRESIST 213 ROUND BAR APPLICATIONS POTENTIAL APPLICATIONS INCLUDE: AEROSPACE • AIRCRAFT ENGINE COMPONENTS • GAS-TURBINE COMPONENTS • COMBUSTION-SYSTEM COMPONENTS • HIGH-TEMPERATURE STRUCTURAL COMPONENTS GAS TURBINES • COMBUSTION COMPONENTS • HOT-GAS COMPONENTS • EXHAUST-SYSTEM COMPONENTS • HIGH-TEMPERATURE HARDWARE INDUSTRIAL TURBOMACHINERY • COMBUSTION HARDWARE • HIGH-TEMPERATURE LINERS • SPECIALIZED TURBINE COMPONENTS HISTORICAL TECHNICAL SOURCES IDENTIFY SHEETS AND TUBING FOR AIRESIST 213 AND DISCUSS ITS USE FOR GAS-TURBINE APPLICATIONS AND COMBUSTION-CHAMBER LINERS. FOR A ROUND BAR, THE BAR IS FREQUENTLY A STARTING STOCK FOR MACHINING, FORGING OR COMPONENT MANUFACTURE, RATHER THAN NECESSARILY THE FINAL INSTALLED GEOMETRY. 12) AIRESIST 213 VS AIRESIST 13 THESE TWO NAMES ARE OFTEN CONFUSED. AIRESIST 213 FAMILY: COBALT-BASE SUPERALLOY FORM HISTORICALLY DOCUMENTED: WROUGHT CR: ~19% C: ~0.18–0.20% W: ~4.7% AL: ~3.5% TA: ~6.5% TYPICAL APPLICATION EMPHASIS: SHEETS/TUBING, HOT-GAS APPLICATIONS INTERCHANGEABILITY: NO AIRESIST 13 FAMILY: COBALT-BASE SUPERALLOY FORM HISTORICALLY DOCUMENTED: CAST CR: ~21% C: ~0.45% W: ~11% AL: ~3.4% TA: ~2% TYPICAL APPLICATION EMPHASIS: HIGH-TEMPERATURE CAST COMPONENTS INTERCHANGEABILITY: NO PNNL SPECIFICALLY DISTINGUISHES AIRESIST 213 AS A WROUGHT ALLOY WHILE IDENTIFYING AIRESIST 13 IN THE CAST-ALLOY GROUP. 13) AIRESIST 213 VS AIRESIST 215 AIRESIST 215 BELONGS TO THE SAME GENERAL FAMILY BUT IS CHEMICALLY DIFFERENT. TYPICAL PUBLISHED VALUES INCLUDE: AIRESIST 213: C ~0.18–0.20%, CR ~19–20%, W ~4.7%, TA ~6.5%, AL ~3.5%, ZR ~0.15%, Y ~0.1%. AIRESIST 215: C ~0.35%, CR ~19%, W ~4.5%, TA ~7.5%, AL ~4.3%, ZR ~0.13%, Y ~0.17%. CONSEQUENTLY, AIRESIST 215 SHOULD NOT BE SUBSTITUTED FOR AIRESIST 213 WITHOUT ENGINEERING APPROVAL. 14) INTERNATIONAL EQUIVALENT GRADES — IMPORTANT ENGINEERING WARNING ONE OF THE MOST IMPORTANT AND TECHNICAL ISSUES SURROUNDING AIRESIST 213 IS THE WORD 'EQUIVALENT.' THERE IS NO RELIABLE EVIDENCE THAT AIRESIST 213 HAS A UNIVERSALLY ACCEPTED ONE-TO-ONE EQUIVALENT IN ASTM, ASME, AMS, UNS, EN, DIN, JIS, BS OR ISO SYSTEMS. THE AVAILABLE AUTHORITATIVE REFERENCES LIST THE ALLOY UNDER AIRESIST 213 / AR-213 RATHER THAN ASSIGNING A STANDARD UNS NUMBER. THEREFORE: STANDARD SYSTEM - DIRECT AIRESIST 213 EQUIVALENT UNS NO CONFIRMED DIRECT DESIGNATION IDENTIFIED ASTM NO DEDICATED DIRECT ROUND-BAR SPECIFICATION IDENTIFIED ASME NO CONFIRMED DIRECT DESIGNATION IDENTIFIED AMS NO DEDICATED AIRESIST 213 BAR SPECIFICATION IDENTIFIED EN NO CONFIRMED ONE-TO-ONE EQUIVALENT IDENTIFIED DIN NO CONFIRMED ONE-TO-ONE EQUIVALENT IDENTIFIED JIS NO CONFIRMED ONE-TO-ONE EQUIVALENT IDENTIFIED ISO NO CONFIRMED ONE-TO-ONE EQUIVALENT IDENTIFIED BS NO CONFIRMED ONE-TO-ONE EQUIVALENT IDENTIFIED SIMILAR—NOT EQUIVALENT—MATERIALS SEARCHES COMMONLY PLACE AIRESIST 213 ALONGSIDE: • HAYNES 25 / L-605 • HAYNES 188 • STELLITE ALLOYS • AIRESIST 13 • AIRESIST 215 • MAR-M COBALT ALLOYS • WI-52 BUT THESE SHOULD BE TREATED AS COMPARATIVE OR COMPETING COBALT-BASE HEAT-RESISTANT ALLOYS, NOT AUTOMATIC EQUIVALENTS. 15) COMMON TRADE NAMES AND SEARCH NAMES FOR INTERNATIONAL SEARCHES, BUYERS MAY USE SEVERAL VARIATIONS: PRIMARY KEYWORDS • AIRESIST 213 ROUND BAR • AIRESIST 213 BAR • AIRESIST 213 ROD • AIRESIST 213 ALLOY • AIRESIST 213 COBALT ALLOY • AIRESIST 213 COBALT BAR • AIRESIST 213 SUPERALLOY • AR-213 ROUND BAR • AR213 ROUND BAR SPELLING VARIATIONS • AIRESIST 213 • AI RESIST 213 • AIRESIST-213 • AIRESIST 213 ALLOY • AR 213 • AR213 • AR-213 INTERNATIONAL COMMERCIAL DESCRIPTIONS • COBALT ALLOY ROUND BAR • COBALT BASED ALLOY ROUND BAR • COBALT BASE SUPERALLOY BAR • HEAT RESISTANT COBALT ALLOY BAR • HIGH TEMPERATURE COBALT ALLOY BAR • AEROSPACE COBALT ALLOY BAR • GAS TURBINE ALLOY BAR • COBALT CHROMIUM TUNGSTEN TANTALUM ALLOY BAR 16) BRAND-NAME SEARCH TERMS AIRESIST ITSELF IS THE IMPORTANT HISTORICAL ALLOY-FAMILY/TRADE DESIGNATION. RELATED COBALT-ALLOY TRADE NAMES THAT MAY APPEAR IN COMPARATIVE SEARCHES INCLUDE: • HAYNES • STELLITE • MAR-M • AIRESIST THESE ARE NOT INTERCHANGEABLE BRANDS FOR AR-213) THEY IDENTIFY DIFFERENT ALLOY FAMILIES AND/OR COMPOSITIONS. HISTORICAL ASTM/TECHNICAL MATERIAL RECORDS ASSOCIATE AIRESIST WITH AIRESEARCH MANUFACTURING/GARRETT-ERA ALLOY DEVELOPMENT. 17) RELEVANT MANUFACTURING & INSPECTION STANDARDS BECAUSE AIRESIST 213 LACKS A CLEARLY ESTABLISHED UNIVERSAL MODERN BAR STANDARD IN THE SOURCES REVIEWED, MANUFACTURERS COMMONLY NEED TO ESTABLISH THE APPLICABLE STANDARDS CONTRACTUALLY. A PURCHASE SPECIFICATION CAN DEFINE: CHEMICAL ANALYSIS • HEAT ANALYSIS • PRODUCT ANALYSIS • SPECTROMETRIC ANALYSIS • CARBON ANALYSIS • TRACE-ELEMENT CONTROL MECHANICAL TESTING • TENSILE TESTING • YIELD-STRENGTH TESTING • ELONGATION • HARDNESS • ELEVATED-TEMPERATURE TENSILE TESTING WHERE REQUIRED • STRESS-RUPTURE TESTING WHERE REQUIRED METALLURGICAL EXAMINATION • GRAIN STRUCTURE • MICROSTRUCTURE • CARBIDE/PHASE DISTRIBUTION • INCLUSIONS • MACROETCH EXAMINATION NON-DESTRUCTIVE TESTING DEPENDING ON COMPONENT CRITICALITY: • ULTRASONIC TESTING • DYE PENETRANT TESTING • EDDY-CURRENT TESTING • RADIOGRAPHIC EXAMINATION DIMENSIONAL INSPECTION • DIAMETER • OVALITY • STRAIGHTNESS • LENGTH • SURFACE ROUGHNESS • END CONDITION THE ACTUAL ASTM/ASME TEST METHOD SHOULD BE EXPLICITLY STATED ON THE PURCHASE ORDER RATHER THAN IMPLYING THAT AN ASTM MATERIAL GRADE EXISTS FOR AR-213. 18) AIRESIST 213 ROUND BAR SURFACE FINISHES AVAILABLE MANUFACTURING FINISHES CAN INCLUDE: • HOT FINISHED • FORGED • PEELED • MACHINED • TURNED • GROUND • CENTERLESS GROUND • POLISHED THE APPROPRIATE FINISH DEPENDS ON: • DIAMETER • TOLERANCE • MACHINING ALLOWANCE • APPLICATION • DRAWING REQUIREMENTS • INSPECTION REQUIREMENTS 19) TYPICAL AIRESIST 213 ROUND BAR SUPPLY SIZES BECAUSE HISTORICAL SOURCES PRIMARILY DOCUMENT AIRESIST 213 AS WROUGHT MATERIAL IN FORMS SUCH AS SHEET AND TUBING, ROUND-BAR DIMENSIONS SHOULD BE TREATED AS MANUFACTURER/CUSTOMER-SPECIFIC RATHER THAN A UNIVERSAL AR-213 STANDARD SIZE RANGE. COMMERCIAL INQUIRIES CAN SPECIFY: • SMALL-DIAMETER ROUND ROD • MEDIUM-DIAMETER BAR • LARGE FORGED ROUND BAR • CUSTOM DIAMETER • CUSTOM LENGTH • CUT-TO-LENGTH BAR • FORGING STOCK FOR AEROSPACE WORK, THE DRAWING OR PROCUREMENT SPECIFICATION SHOULD CONTROL DIMENSIONS AND TOLERANCES. 20. AIRESIST 213 MACHINING AIRESIST 213 BELONGS TO THE DIFFICULT-TO-MACHINE HEAT-RESISTANT ALLOY CATEGORY. MACHINING CONSIDERATIONS INCLUDE: • LOW CUTTING SPEEDS • RIGID MACHINE SETUP • SHARP TOOLING • ADEQUATE COOLANT • CONTROLLED FEED • LIMITED TOOL ENGAGEMENT • AVOIDANCE OF WORK HARDENING • CAREFUL CHIP EVACUATION MACHINING REFERENCES CLASSIFY AIRESIST 213 ALONGSIDE DIFFICULT COBALT- AND NICKEL-BASE HEAT-RESISTANT ALLOYS. THIS IS PARTICULARLY IMPORTANT WHEN MANUFACTURING PRECISION ROUND-BAR COMPONENTS. 21) WHY AIRESIST 213 IS DIFFICULT TO MACHINE THE ALLOY'S HIGH-TEMPERATURE CAPABILITY CAN ALSO CREATE MACHINING CHALLENGES. TYPICAL PROBLEMS INCLUDE: • RAPID TOOL WEAR • WORK HARDENING • HIGH CUTTING FORCES • HEAT CONCENTRATION AT THE CUTTING EDGE • POOR CHIP CONTROL • SURFACE DAMAGE • DIMENSIONAL DRIFT THEREFORE, TOOLING SELECTION AND MACHINING PARAMETERS SHOULD BE ESTABLISHED USING QUALIFIED CUTTING-TOOL DATA AND ACTUAL MATERIAL CONDITION. 22) QUALITY CONTROL FOR AIRESIST 213 ROUND BAR MANUFACTURING A HIGH-QUALITY MANUFACTURER SHOULD MAINTAIN TRACEABILITY FROM MELTING THROUGH FINAL INSPECTION. A TYPICAL QUALITY-CONTROL SEQUENCE IS: RAW MATERIAL VERIFICATION ↓ VACUUM MELT IDENTIFICATION ↓ CHEMICAL ANALYSIS ↓ INGOT INSPECTION ↓ FORGING/ROLLING RECORDS ↓ HEAT TREATMENT RECORD ↓ DIMENSIONAL INSPECTION ↓ MECHANICAL TESTING ↓ NDT IF SPECIFIED ↓ FINAL VISUAL & SURFACE INSPECTION ↓ MILL TEST CERTIFICATE 23) MILL TEST CERTIFICATE FOR AIRESIST 213 ROUND BAR A PROFESSIONAL MTC SHOULD IDENTIFY, WHERE APPLICABLE: • MATERIAL DESIGNATION • AIRESIST 213 / AR-213 • HEAT NUMBER • BATCH NUMBER • DIAMETER • LENGTH • QUANTITY • CHEMICAL COMPOSITION • MECHANICAL PROPERTIES • HEAT-TREATMENT CONDITION • HARDNESS • TEST STANDARDS • INSPECTION RESULTS • NDT RESULTS • DIMENSIONAL INSPECTION • TRACEABILITY • CERTIFICATE AUTHORIZATION FOR AEROSPACE APPLICATIONS, ADDITIONAL CUSTOMER-SPECIFIC DOCUMENTATION MAY BE REQUIRED. 24) AIRESIST 213 ROUND BAR MANUFACTURING ADVANTAGES AIRESIST 213 IS ATTRACTIVE FOR SPECIALIZED APPLICATIONS BECAUSE IT COMBINES: • COBALT-BASE HIGH-TEMPERATURE CAPABILITY • OXIDATION RESISTANCE • SULFIDATION RESISTANCE • ELEVATED-TEMPERATURE STRENGTH • REFRACTORY-ELEMENT STRENGTHENING • RELATIVELY STRONG DUCTILITY AT ELEVATED TEMPERATURE • SUITABILITY FOR DEMANDING GAS-TURBINE ENVIRONMENTS PUBLISHED DATA SHOWS THAT AR-213 RETAINS SUBSTANTIAL TENSILE STRENGTH AT ELEVATED TEMPERATURES, WITH THE CITED DATASET REPORTING APPROXIMATELY 960 MPA AT 650°C AND 315 MPA AT 870°C. 25) AIRESIST 213 VS HAYNES 25 / L-605 HAYNES 25/L-605 IS ONE OF THE MOST FREQUENTLY ENCOUNTERED COBALT-BASE HEAT-RESISTANT ALLOYS IN COMPARATIVE SEARCHES. HOWEVER, THEIR COMPOSITIONS DIFFER SUBSTANTIALLY. AIRESIST 213 CONTAINS APPROXIMATELY: • 19% CR • 4.7% W • 6.5% TA • 3.5% AL • 0.18% C WHEREAS HAYNES 25/L-605 IS CHARACTERIZED BY A DIFFERENT COBALT-CHROMIUM-TUNGSTEN-NICKEL CHEMISTRY. THUS: AIRESIST 213 ≠ HAYNES 25/L-605 EVEN THOUGH BOTH ARE COBALT-BASE HIGH-TEMPERATURE ALLOYS. 26) AIRESIST 213 VS HAYNES 188 HAYNES 188 IS ANOTHER MAJOR COBALT-BASE HIGH-TEMPERATURE ALLOY. IT IS FREQUENTLY LISTED IN THE SAME HEAT-RESISTANT MACHINING/MATERIAL CATEGORY AS AIRESIST 213) HOWEVER, THE TWO ALLOYS SHOULD NOT BE TREATED AS EQUIVALENT WITHOUT AN ENGINEERING COMPARISON COVERING: • CHEMISTRY • TENSILE PROPERTIES • CREEP • STRESS RUPTURE • OXIDATION • SULFIDATION • WELDABILITY • PROCESSING CONDITION • OPERATING TEMPERATURE 27) AIRESIST 213 ROUND BAR FOR AEROSPACE MANUFACTURING THE ALLOY'S HISTORICAL DEVELOPMENT AND APPLICATION PROFILE MAKE AEROSPACE AND GAS-TURBINE MANUFACTURING PARTICULARLY RELEVANT. POTENTIAL USES INCLUDE: • COMBUSTION HARDWARE • ENGINE HOT-SECTION COMPONENTS • TURBINE-SYSTEM HARDWARE • EXHAUST COMPONENTS • COMBUSTION LINERS • HIGH-TEMPERATURE STRUCTURAL PARTS NASA DOCUMENTATION IDENTIFIES AIRESIST 213 AMONG VACUUM-MELTED WROUGHT COBALT ALLOYS AND MENTIONS POTENTIAL APPLICATIONS INCLUDING HEAT EXCHANGERS, JET-ENGINE COMBUSTION CANS AND TAILPIPES. 28) GLOBAL KEYWORD CLUSTER FOR AIRESIST 213 BECAUSE EXACT WORLDWIDE GOOGLE KEYWORD PLANNER VOLUME FIGURES ARE NOT PUBLICLY AVAILABLE THROUGH THE SOURCES USED HERE, THE FOLLOWING IS A SEARCH-INTENT/KEYWORD-CLUSTER STRATEGY RATHER THAN A CLAIM OF EXACT MONTHLY SEARCH VOLUME. HIGHEST-VALUE COMMERCIAL-INTENT TERMS • AIRESIST 213 ROUND BAR • AIRESIST 213 BAR • AIRESIST 213 MANUFACTURER • AIRESIST 213 SUPPLIER • AIRESIST 213 STOCKIST • AIRESIST 213 EXPORTER • AIRESIST 213 ROD • AIRESIST 213 ALLOY • AIRESIST 213 COBALT ALLOY • AIRESIST 213 ROUND ROD • AR-213 ROUND BAR • AR-213 COBALT ALLOY • COBALT ALLOY ROUND BAR • COBALT SUPERALLOY ROUND BAR • HIGH TEMPERATURE ALLOY ROUND BAR • AEROSPACE ALLOY ROUND BAR • GAS TURBINE ALLOY BAR TECHNICAL KEYWORDS • AIRESIST 213 CHEMICAL COMPOSITION • AIRESIST 213 EQUIVALENT • AIRESIST 213 SPECIFICATION • AIRESIST 213 PROPERTIES • AIRESIST 213 MECHANICAL PROPERTIES • AIRESIST 213 DENSITY • AIRESIST 213 TEMPERATURE RANGE • AIRESIST 213 HEAT TREATMENT • AIRESIST 213 MACHINING • AIRESIST 213 TENSILE STRENGTH • AIRESIST 213 YIELD STRENGTH • AIRESIST 213 MTC • AIRESIST 213 MATERIAL STANDARD • AIRESIST 213 UNS NUMBER • AIRESIST 213 ASTM SPECIFICATION LONG-TAIL BUYER KEYWORDS • BUY AIRESIST 213 ROUND BAR • AIRESIST 213 ROUND BAR MANUFACTURER INDIA • AIRESIST 213 ROUND BAR SUPPLIER • AIRESIST 213 BAR EXPORTER • AIRESIST 213 AEROSPACE ROUND BAR • AIRESIST 213 GAS TURBINE BAR • AIRESIST 213 CUSTOM SIZE ROUND BAR • AIRESIST 213 FORGED ROUND BAR • AIRESIST 213 PRECISION ROUND BAR • AIRESIST 213 HIGH TEMPERATURE BAR • AIRESIST 213 COBALT BASED SUPERALLOY • AR-213 ROUND BAR SUPPLIER • AR-213 COBALT ALLOY MANUFACTURER 29) INTERNATIONAL KEYWORD VARIATIONS UNITED STATES / CANADA • AIRESIST 213 ROUND BAR • AR-213 COBALT ALLOY BAR • COBALT SUPERALLOY BAR • AEROSPACE COBALT ALLOY UNITED KINGDOM / EUROPE • AIRESIST 213 ROUND BAR • AIRESIST 213 ROUND ROD • COBALT BASED HEAT RESISTANT ALLOY • HIGH TEMPERATURE COBALT ALLOY GERMANY POTENTIAL SEARCH-LANGUAGE COMBINATIONS INCLUDE: • AIRESIST 213 RUNDSTAB • AIRESIST 213 RUNDSTANGE • KOBALTBASIS-SUPERLEGIERUNG • HOCHTEMPERATUR-KOBALTLEGIERUNG FRANCE • BARRE RONDE AIRESIST 213 • ALLIAGE DE COBALT AIRESIST 213 • ALLIAGE COBALT HAUTE TEMPÉRATURE ITALY • BARRA TONDA AIRESIST 213 • LEGA DI COBALTO AIRESIST 213 • SUPERLEGA A BASE DI COBALTO SPAIN • BARRA REDONDA AIRESIST 213 • ALEACIÓN DE COBALTO AIRESIST 213 • SUPERALEACIÓN DE COBALTO INDIA • AIRESIST 213 ROUND BAR MANUFACTURER • AIRESIST 213 ROUND BAR SUPPLIER • AIRESIST 213 COBALT ALLOY MANUFACTURER • AIRESIST 213 BAR EXPORTER • AR-213 ROUND BAR MANUFACTURER INDIA CHINA COMMON TRANSLITERATION/SEARCH CONCEPTS INCLUDE: • AIRESIST 213 COBALT ALLOY • AR-213 COBALT ALLOY • COBALT BASE SUPERALLOY • HIGH TEMPERATURE COBALT ALLOY 30. FREQUENTLY ASKED QUESTIONS WHAT IS AIRESIST 213? AIRESIST 213, ALSO DESIGNATED AR-213, IS A COBALT-BASE HEAT-RESISTANT SUPERALLOY. ASM REFERENCES IDENTIFY IT AS A WROUGHT ALLOY WITH A NOMINAL COMPOSITION DOMINATED BY COBALT, CHROMIUM, TANTALUM, TUNGSTEN AND ALUMINUM. IS AIRESIST 213 A NICKEL ALLOY? NO. IT IS A COBALT-BASE ALLOY. IS AIRESIST 213 THE SAME AS HAYNES 188? NO. THEY ARE DIFFERENT COBALT-BASE SUPERALLOYS. IS AIRESIST 213 THE SAME AS AIRESIST 13? NO. AIRESIST 13 AND AIRESIST 213 HAVE SUBSTANTIALLY DIFFERENT COMPOSITIONS AND HISTORICAL PRODUCT FORMS. DOES AIRESIST 213 HAVE A UNS NUMBER? THE AUTHORITATIVE TECHNICAL TABLES LOCATED FOR THIS RESEARCH LIST AIRESIST 213 WITHOUT A CONFIRMED UNS DESIGNATION. DOES ASTM HAVE AN AIRESIST 213 ROUND BAR SPECIFICATION? NO DEDICATED ASTM AIRESIST 213 ROUND-BAR SPECIFICATION WAS IDENTIFIED IN THE AUTHORITATIVE MATERIAL REFERENCES REVIEWED. IS AIRESIST 213 A WROUGHT ALLOY? YES. PNNL AND ASM MATERIAL REFERENCES CLASSIFY AIRESIST 213 AMONG WROUGHT COBALT-BASE ALLOYS. IS VACUUM MELTING IMPORTANT? YES. HISTORICAL NASA DOCUMENTATION SPECIFICALLY IDENTIFIES AIRESIST 213 AS A WROUGHT COBALT ALLOY REQUIRING VACUUM MELTING. WHAT IS AIRESIST 213 USED FOR? IT HAS BEEN ASSOCIATED WITH HIGH-TEMPERATURE GAS-TURBINE AND AEROSPACE APPLICATIONS, INCLUDING COMBUSTION-SYSTEM AND EXHAUST-RELATED COMPONENTS. 31) RECOMMENDED TITLE AIRESIST 213 ROUND BAR MANUFACTURER, SUPPLIER & EXPORTER | AR-213 COBALT-BASED SUPERALLOY – CHEMICAL COMPOSITION, PROPERTIES, STANDARDS & MANUFACTURING ALTERNATIVE TITLES 1. AIRESIST 213 ROUND BAR MANUFACTURING | AR-213 COBALT SUPERALLOY, COMPOSITION, PROPERTIES & GLOBAL STANDARDS 2. AIRESIST 213 COBALT ALLOY ROUND BAR | AR-213 MANUFACTURER, SUPPLIER, EQUIVALENT, SPECIFICATION & APPLICATIONS 3. AIRESIST 213 ROUND BAR | AR-213 HIGH TEMPERATURE COBALT ALLOY MANUFACTURING, STANDARDS & AEROSPACE APPLICATIONS 32) META DESCRIPTION DISCOVER AIRESIST 213 ROUND BAR MANUFACTURING, AR-213 COBALT ALLOY COMPOSITION, PROPERTIES, HEAT TREATMENT, INTERNATIONAL EQUIVALENTS, STANDARDS, APPLICATIONS, MACHINING, SPECIFICATIONS AND GLOBAL SUPPLIER KEYWORDS. 33) CORE KEYWORD LIST AIRESIST 213 ROUND BAR, AIRESIST 213 BAR, AIRESIST 213 ROD, AIRESIST 213 ALLOY, AIRESIST 213 COBALT ALLOY, AR-213 ROUND BAR, AR213 BAR, AIRESIST 213 MANUFACTURER, AIRESIST 213 SUPPLIER, AIRESIST 213 EXPORTER, AIRESIST 213 STOCKIST, COBALT ALLOY ROUND BAR, COBALT SUPERALLOY BAR, COBALT BASED SUPERALLOY, HIGH TEMPERATURE COBALT ALLOY, AEROSPACE COBALT ALLOY, GAS TURBINE ALLOY, HEAT RESISTANT ALLOY BAR, AIRESIST 213 CHEMICAL COMPOSITION, AIRESIST 213 EQUIVALENT, AIRESIST 213 SPECIFICATION, AIRESIST 213 PROPERTIES, AIRESIST 213 MECHANICAL PROPERTIES, AIRESIST 213 HEAT TREATMENT, AIRESIST 213 MACHINING, AIRESIST 213 DENSITY, AIRESIST 213 TENSILE STRENGTH, AIRESIST 213 YIELD STRENGTH, AR-213 COBALT ALLOY, AR-213 SUPERALLOY, AEROSPACE ROUND BAR, HIGH TEMPERATURE ROUND BAR. TECHNICAL TAKEAWAY THE STRONGEST TECHNICALLY DEFENSIBLE POSITIONING IS “AIRESIST 213 / AR-213 WROUGHT COBALT-BASE SUPERALLOY”, RATHER THAN FORCING IT INTO A MODERN ASTM/UNS/EN EQUIVALENT. THE AVAILABLE TECHNICAL LITERATURE CONSISTENTLY SUPPORTS ITS COBALT-BASE COMPOSITION, WROUGHT CLASSIFICATION, VACUUM-MELTING HISTORY, ELEVATED-TEMPERATURE PROPERTIES AND GAS-TURBINE RELEVANCE. FOR A COMMERCIAL PRODUCT PAGE, THE NEXT USEFUL STEP IS TO TURN THIS INTO A MANUFACTURER-FOCUSED LANDING PAGE WITH AN KEYWORD HIERARCHY, FAQ SCHEMA WORDING, PRODUCT SPECIFICATIONS TABLE, AND INDIA/USA/UAE/EUROPE BUYER-SEARCH TERMS.