INCONEL® Alloy 686: Comprehensive Product Introduction
Introduction to INCONEL® Alloy 686
INCONEL® alloy 686 is a versatile nickel-chromium-molybdenum-tungsten alloy known for its exceptional corrosion resistance in a wide range of aggressive environments. Developed as an upgrade over traditional nickel alloys, INCONEL® 686 offers superior resistance to localized corrosion, pitting, and crevice corrosion. This article provides a detailed overview of INCONEL® alloy 686, covering its chemical composition, mechanical properties, performance at different temperatures, corresponding grades, industry applications, available forms, sizes, and production standards across various countries.
Chemical Composition of INCONEL® Alloy 686
INCONEL® alloy 686 is formulated with precise elements to achieve its corrosion-resistant properties:
| Element | Komposition (%) |
|---|---|
| Nickel (Ni) | 58,0 Min |
| Chrom (Cr) | 20.0-23.0 |
| Molybdän (Mo) | 15.0-17.0 |
| Tungsten (W) | 3.0-4.4 |
| Eisen (Fe) | 5,0 max |
| Kobalt (Co) | 1,0 max |
| Mangan (Mn) | 1,0 max |
| Silizium (Si) | 0.50 max |
| Kohlenstoff (C) | 0.020 max |
| Phosphor (P) | 0.015 max |
| Schwefel (S) | 0.010 max |
Mechanical Properties of INCONEL® Alloy 686
INCONEL® alloy 686 exhibits robust mechanical properties suitable for demanding applications:
| Eigentum | Wert |
|---|---|
| Zugfestigkeit | 760 MPa (110 ksi) min |
| Streckgrenze (0,2 % Offset) | 345 MPa (50 ksi) min |
| Verlängerung | 40% min |
| Härte (Brinell) | 200–250 (variiert je nach Wärmebehandlung) |
| Dichte | 8.68 g/cm³ |
Leistung bei verschiedenen Temperaturen
INCONEL® alloy 686 maintains its corrosion resistance and mechanical properties across a wide range of temperatures:
| Temperaturbereich | Leistung |
|---|---|
| Zimmertemperatur | Hohe Korrosionsbeständigkeit und mechanische Festigkeit |
| Erhöhte Temperaturen (bis zu 1000 °C / 1832 °F) | Behält Festigkeit und Oxidationsbeständigkeit |
| Kryogene Temperaturen | Behält Duktilität und Zähigkeit |
Entsprechende Noten in verschiedenen Ländern
INCONEL® alloy 686 is recognized by various grades in different countries and regions:
| Land/Region | Grad |
|---|---|
| USA | UNS N06686 |
| Deutschland | 2.4606 |
| Frankreich | – |
| Vereinigtes Königreich | – |
| Japan | – |
| China | – |
Standardformen, Größen und Produktionsstandards
Formen und Größen
INCONEL® alloy 686 is available in various forms and sizes to meet industrial requirements:
| Bilden | Größenbereich |
|---|---|
| Blätter | Dicke: 0,1 mm – 50 mm |
| Platten | Dicke: 0,3 mm – 100 mm |
| Riegel | Durchmesser: 5 mm – 300 mm |
| Draht | Durchmesser: 0,1 mm – 10 mm |
| Röhren | Außendurchmesser: 6 mm – 200 mm |
| Rohre | Außendurchmesser: 10 mm – 300 mm |
| Beschläge | Verschiedene Konfigurationen gemäß Standards |
| Schmiedestücke | Verschiedene Formen und Größen gemäß den Standards |
Produktionsstandards
INCONEL® alloy 686 conforms to international production standards:
| Standard | Beschreibung |
|---|---|
| ASTM B462 | Schmiedestücke |
| ASTM B564 | Stangen und Schmiedestücke |
| ASTM B574 | Stangen |
| ASTM B575 | Platten und Bleche |
| ASTM B619/B622 | Welded and seamless pipes and tubes |
| ASTM B366 | Beschläge |
Industry Applications of INCONEL® Alloy 686
INCONEL® alloy 686 is widely utilized across various industries due to its superior corrosion resistance and mechanical properties:
- Chemische Verarbeitung: Reactors, vessels, and piping systems handling acids, alkalis, and mixed chemicals.
- Öl und Gas: Equipment in sour gas environments, including downhole components and pipelines.
- Zellstoff und Papier: Digesters, bleach plants, and recovery boilers.
- Energieerzeugung: Flue gas desulfurization systems, scrubbers, and heat exchangers.
- Marine: Propeller shafts, seawater cooling systems, and marine exhaust systems.
Advantages of INCONEL® Alloy 686
- Überlegene Korrosionsbeständigkeit: Excellent resistance to localized corrosion and pitting.
- Hohe Festigkeit: Maintains mechanical integrity in harsh environments.
- Vielseitigkeit: Suitable for both high and low-temperature applications.
- Langlebigkeit: Provides long-term reliability in corrosive environments.
Abschluss
INCONEL® alloy 686 stands as a high-performance alloy designed to excel in corrosive environments where traditional materials fall short. With its unique combination of chemical composition, mechanical properties, and adherence to international standards, it serves critical applications across global industries. Engineers and designers seeking durability and reliability in aggressive chemical and marine environments can confidently consider INCONEL® alloy 686 for their projects.
Für detaillierte technische Spezifikationen und weitere Anfragen wird die Bezugnahme auf spezifische Produktdatenblätter und die Rücksprache mit den Herstellern empfohlen.
This comprehensive introduction and detailed data sheet provide a thorough overview of INCONEL® alloy 686, emphasizing its chemical composition, mechanical properties, performance characteristics at different temperatures, applications, and advantages in demanding industrial environments across various countries.