Hợp kim INCOLOY® 800H/HT

INCOLOY-800HT

INCOLOY® Alloy 800H/HT Product Introduction

INCOLOY® alloy 800H and INCOLOY® alloy 800HT are high-temperature alloys known for their excellent corrosion resistance and ability to maintain structural integrity under high-temperature conditions. This article provides a comprehensive introduction to these alloys, covering their chemical composition, mechanical properties, performance characteristics, industry applications, available shapes and sizes, production standards, international grades, welding and machining considerations, polishing techniques, heat treatment processes, cold working capabilities, as well as their advantages, disadvantages, and similar products in the market.

Thành phần hóa học

The chemical composition of INCOLOY® alloy 800H and INCOLOY® alloy 800HT is crucial for understanding their properties and performance under different conditions. The composition typically includes:

Yếu tốINCOLOY® alloy 800H Composition (%)INCOLOY® alloy 800HT Composition (%)
Niken (Ni)30,0 – 35,030,0 – 35,0
Crom (Cr)19,0 – 23,019,0 – 23,0
Sắt (Fe)39,5 phút39,5 phút
Nhôm (Al)00,15 – 0,6000,15 – 0,60
Cacbon (C)0.05 – 0.100.05 – 0.10
Titan (Ti)00,15 – 0,600.25 – 0.60
Đồng0.75 max0.75 max

Tính chất cơ học

The mechanical properties of INCOLOY® alloy 800H/HT make them suitable for high-temperature applications where strength and durability are essential:

Tài sảnINCOLOY® alloy 800HINCOLOY® alloy 800HT
Độ bền kéo (MPa)520 – 690600 – 800
Sức mạnh năng suất (MPa)210 – 400220 – 380
Độ giãn dài (%)30 phút30 phút
Hardness (HRC)≤ 30≤ 30

Hiệu suất ở nhiệt độ khác nhau

INCOLOY® alloy 800H/HT exhibit excellent performance across a wide range of temperatures, making them suitable for applications where thermal stability is critical:

Temperature Range (°C)INCOLOY® alloy 800H PerformanceINCOLOY® alloy 800HT Performance
Nhiệt độ phòngChống ăn mòn tuyệt vờiChống ăn mòn tuyệt vời
Elevated TemperaturesMaintains strength and integrityHigh creep and rupture strength
High TemperaturesResistant to oxidation and carburizationRetains mechanical properties

Ứng dụng công nghiệp

These alloys find applications in various industries due to their unique properties:

  • Chemical Processing: Heat exchangers, catalyst support grids.
  • Power Generation: Steam generator tubing, coal gasification.
  • Petrochemical: Ethylene furnace quench boilers, process heaters.
  • Heat Treatment: Annealing boxes, radiant tubes.

Hình dạng, kích thước và tiêu chuẩn sản xuất

INCOLOY® alloy 800H/HT are available in various forms to meet specific requirements:

  • Các hình thức: Sheets, plates, bars, pipes, tubes, fittings.
  • Kích thước: Customizable based on application needs.
  • Production Standards: ASTM B407, ASTM B154, ASTM B163, ASTM B515.

Tiêu chuẩn và cấp độ tương ứng

The alloys adhere to international standards with corresponding grades in different countries:

  • United States: ASTM B407/B154/B163/B515.
  • Germany: DIN 17459/NFA 49-217.
  • Japan: JIS G3459/G3463/G3467.
  • China: GB/T 14976/GB/T 14975.

Welding, Machining, Polishing, Heat Treatment, Cold Working

Quá trìnhChi tiết
hànUse matching filler metals; post-weld heat treatment may be required.
gia côngHigh-speed tools; adequate coolant to prevent work hardening.
đánh bóngMechanical polishing recommended; avoid contamination.
Xử lý nhiệtAnnealing at specific temperatures; water quenching.
Làm việc lạnhLimited due to high work hardening rate; annealing may be required.

Ưu điểm và nhược điểm

Thuận lợiNhược điểm
High-temperature strength and corrosion resistance.Limited cold working capabilities.
Wide range of industrial applications.Costlier than standard stainless steels.
Excellent oxidation and carburization resistance.Susceptible to embrittlement at high temperatures.
Good weldability and formability.Limited availability of large sizes in certain forms.

Sản phẩm tương tự

Hợp kim tương tựCompositionCác ứng dụng
Hợp kim INCONEL® 600Ni 76.0%, Cr 15.5%, Fe 8.0%High-temperature furnace components
HASTELLOY® alloy XNi 47.5%, Cr 22.0%, Fe 18.5%, Mo 9.0%Gas turbine components, jet engines
A286 stainless steelFe 25.5%, Ni 15.0%, Cr 13.5%, Ti 2.1%, Mo 1.0%Aircraft and industrial gas turbine components

Phần kết luận

INCOLOY® alloy 800H/HT are versatile materials known for their high-temperature strength, corrosion resistance, and wide applicability across various industries. Understanding their chemical composition, mechanical properties, performance characteristics, and production standards is crucial for selecting the right alloy for specific applications. While they offer significant advantages, careful consideration of their limitations and processing requirements is essential to maximize their performance.

This comprehensive introduction aims to provide a detailed overview of INCOLOY® alloy 800H/HT, highlighting their capabilities, applications, and operational considerations across global markets.