Hợp kim INCONEL® 686

Alloy-686

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:

Yếu tốThành phần (%)
Niken (Ni)58.0 min
Crom (Cr)20.0-23.0
Molypden (Mo)15.0-17.0
Vonfram (W)3.0-4.4
Sắt (Fe)tối đa 5,0
Coban (Co)tối đa 1,0
Mangan (Mn)tối đa 1,0
Silic (Si)0.50 max
Cacbon (C)0tối đa 0,020
Phốt pho (P)0tối đa 0,015
Lưu huỳnh (S)0tối đa 0,010

Mechanical Properties of INCONEL® Alloy 686

INCONEL® alloy 686 exhibits robust mechanical properties suitable for demanding applications:

Tài sảnGiá trị
Độ bền kéo760 MPa (110 ksi) min
Sức mạnh năng suất (bù 0,2%)345 MPa (50 ksi) min
Độ giãn dài40% phút
độ cứng (Brinell)200-250 (varies with heat treatment)
Tỉ trọng8.68 g/cm³

Hiệu suất ở nhiệt độ khác nhau

INCONEL® alloy 686 maintains its corrosion resistance and mechanical properties across a wide range of temperatures:

Phạm vi nhiệt độHiệu suất
Nhiệt độ phòngHigh resistance to corrosion and mechanical strength
Elevated Temperatures (up to 1000°C / 1832°F)Giữ lại sức mạnh và khả năng chống oxy hóa
Nhiệt độ đông lạnhDuy trì độ dẻo và độ dẻo dai

Các lớp tương ứng ở các quốc gia khác nhau

INCONEL® alloy 686 is recognized by various grades in different countries and regions:

Quốc gia/Khu vựcCấp
Hoa KỳUNS N06686
nước Đức2.4606
Pháp
Vương quốc Anh
Nhật Bản
Trung Quốc

Mẫu chuẩn, kích thước và tiêu chuẩn sản xuất

Hình thức và kích cỡ

INCONEL® alloy 686 is available in various forms and sizes to meet industrial requirements:

Hình thứcPhạm vi kích thước
Trang tínhĐộ dày: 0,1 mm – 50 mm
TấmThickness: 0.3 mm – 100 mm
ThanhDiameter: 5 mm – 300 mm
Dây điệnĐường kính: 0,1 mm – 10 mm
ỐngOuter Diameter: 6 mm – 200 mm
ỐngOuter Diameter: 10 mm – 300 mm
FittingsVarious configurations as per standards
rènHình dạng và kích cỡ khác nhau theo tiêu chuẩn

Tiêu chuẩn sản xuất

INCONEL® alloy 686 conforms to international production standards:

Tiêu chuẩnSự miêu tả
ASTM B462rèn
ASTM B564Bars and forgings
ASTM B574Que
ASTM B575Plates and sheets
ASTM B619/B622Welded and seamless pipes and tubes
ASTM B366Fittings

Industry Applications of INCONEL® Alloy 686

INCONEL® alloy 686 is widely utilized across various industries due to its superior corrosion resistance and mechanical properties:

  • Xử lý hóa học: Reactors, vessels, and piping systems handling acids, alkalis, and mixed chemicals.
  • Dầu khí: Equipment in sour gas environments, including downhole components and pipelines.
  • Bột giấy và giấy: Digesters, bleach plants, and recovery boilers.
  • Sản xuất điện: Flue gas desulfurization systems, scrubbers, and heat exchangers.
  • Hàng hải: Propeller shafts, seawater cooling systems, and marine exhaust systems.

Advantages of INCONEL® Alloy 686

  • Superior Corrosion Resistance: Excellent resistance to localized corrosion and pitting.
  • High Strength: Maintains mechanical integrity in harsh environments.
  • Versatility: Suitable for both high and low-temperature applications.
  • Longevity: Provides long-term reliability in corrosive environments.

Phần kết luận

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.

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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.