Incoloy 800 Fasteners

Incoloy 800 / 800H / 800HT Fasteners

What are Incoloy 800, 800H, and 800HT fasteners, and what are their key characteristics and applications?

Incoloy 800, 800H, and 800HT fasteners are high-performance alloys that belong to the Incoloy family of nickel-iron-chromium alloys. These fasteners are designed to provide exceptional corrosion resistance, strength, and high-temperature stability.

Incoloy 800 fasteners are composed of nickel, iron, and chromium, with the addition of small amounts of aluminium and titanium for improved creep and stress rupture properties. They are known for their resistance to oxidation, carburization, and nitridation, making them suitable for various applications in aggressive environments such as chemical processing, power generation, and heat-treating equipment.

Incoloy 800H fasteners have a modified chemical composition with higher carbon content, which enhances their high-temperature strength while maintaining excellent corrosion resistance. These fasteners, such as furnace components, petrochemical processing, and heat exchangers, are commonly used in applications where exposure to elevated temperatures and thermal cycling is expected.

Incoloy 800HT fasteners offer superior thermal stability due to their increased levels of aluminium and titanium. They exhibit excellent strength at elevated temperatures and are often employed in applications involving sustained high-temperature exposure, such as gas turbines, industrial furnaces, and steam generators.

Incoloy 800 Nuts

How does the corrosion resistance of Incoloy 800, 800H, and 800HT fasteners compare to other materials?

Incoloy 800, 800H, and 800HT fasteners' corrosion resistance are considered excellent and highly competitive compared to other materials commonly used in fastener applications. These alloys offer exceptional resistance to various corrosive environments, including sulfuric acid, nitric acid, hydrochloric acid, and many alkaline solutions.

Compared to stainless steel, often used in various industrial applications, Incoloy 800, 800H, and 800HT fasteners demonstrate superior corrosion resistance, especially in high-temperature environments. They are less prone to stress corrosion cracking, pitting, and crevice corrosion, ensuring prolonged service life and reliability.

Incoloy 800, 800H, and 800HT fasteners exhibit similar or even better resistance to corrosive media. These alloys are particularly well-suited for environments where oxidation, carburization, and nitridation are concerns.

Manufacturing Process Of Incoloy 800 Fasteners

Incoloy 800 Fasteners Specification

Standard ASTM B166 / ASME SB166
Bolt / Screw Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size M1.6 – M12
Self Tapping Screw Size No.2 – No. 14
Length 3 mm to 200 mm
Threads UNF, BSW, BSF, METRIC, UNC, or as required
Fasteners
  • DIN : DIN 934, DIN 931, DIN 970, DIN 933
  • UTS : UNEF, NPT, UNC, UNS, UNF, NPTF
  • ISO : JIS standards, ISO 4033, ISO 4032,
  • ANSI – American National Standards Institute
  • ASME B18.5
  • ANSI B 28.2.4 1M
  • as per defined in ASME B16.5 standard Stud Bolt length
  • ANSI B 18.2.4 2M
  • as per defined in ASME B18.2.2 Hex nuts
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production Process M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC
Types Bolts, Nuts, Stud Bolts, Washers, Threaded Rod, Anchor Fasteners, Eye Bolt, Stud, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc.

Incoloy 800 Fasteners Equivalent Grades

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST OR
Incoloy 800 N08800 1.4876 Z8NC32-21 X10NiCrAlTi32-20 NCF 800 NA 15 ЭИ670 XH32T
Incoloy 800H N08810 1.4958 / 1.4876 Z8NC33-21 X5NiCrAlTi31-20 NCF 800H NA 15(H) ЭИ670 XH32T
Incoloy 800HT N08811 1.4859 / 1.4876 X8NiCrAlTi32-21 NCF 800HT NA 15(HT) ЭИ670 XH32T

Chemical Composition of Incoloy 800 Fasteners

Grade C Ni Cr Cu Fe Ti Mn Si S Al
Incoloy 800 0.1 max 30-35 19-23 0.75 max 39.5 min 0.15-0.60 1.5 max 1.0 max 0.015 max 0.15-0.60
Incoloy 800H 0.05-0.1 30-35 19-23 0.75 max 39.5 min 0.15-0.60 1.5 max 1.0 max 0.015 max 0.15-0.60
Incoloy 800HT 0.06-0.1 30-35 19-23 0.75 max 39.5 min 0.25-0.60 1.5 max 1.0 max 0.015 max 0.85-1.20

Mechanical Properties of Incoloy 800 Fasteners

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Incoloy 800 / 800H / 800HT 7.94 g/cm3 1385 °C (2525 °F) Psi – 75,000 , MPa – 520 Psi – 30,000 , MPa – 205 30 %

Types Of Incoloy 800 Fasteners

Incoloy 800 Nuts

Incoloy 800 Nuts

Incoloy Alloy 800H Bolts

Incoloy Alloy 800H Bolts

Incoloy® Alloy 800 Screw

Incoloy® Alloy 800 Screw

Alloy 800H Washers

Alloy 800H Washers

800 Incoloy Stud Bolt

800 Incoloy Stud Bolt

Incoloy 800 Anchor Bolts

Incoloy 800 Anchor Bolts

UNS N08800 Threaded Rod

UNS N08800 Threaded Rod

Incoloy 800 Heavy Hex Bolts

Incoloy 800 Heavy Hex Bolts

Incoloy Alloy 800HT Hex Nuts

Incoloy Alloy 800HT Hex Nuts

Other Types Of Incoloy 800H Fasteners

  • Incoloy Alloy 800 Fastener
  • Alloy 800 Square Nuts
  • UNS N08800 Fasteners
  • Nickel Alloy 800 Fasteners
  • Incoloy 800 Nut Bolt
  • 1.4876 Fasteners
  • 1.4958 Hex Head Bolts
  • Inconel 800H Machine Screws
  • ASTM B166 Incoloy 800 Washers
  • Incoloy Alloy 800HT Bolts
  • Incoloy 800 Nuts
  • Incoloy® Alloy 800 Bolts and Nuts
  • UNS N08810 Fasteners
  • 800 Incoloy Fasteners
  • Incoloy® Alloy 800 U Bolts
  • Incoloy Alloy 800 Flat Washer
  • Alloy 800 Hex Bolt
  • 800 Incoloy Self Locking Nuts
  • UNS N08811 Screw
  • Incoloy® Alloy 800 Spring Washer
  • Incoloy 800H Double Ended Studs
  • Incoloy 800 Allen Cap Screw
  • 800 Incoloy Wing Nuts
  • 1.4859 Nuts And Bolts
  • ASTM B166 Incoloy 800 Coupling Nuts
  • Incoloy Alloy 800 U Bolts
  • Incoloy 800 Industrial Fasteners
  • Inconel 800 Heavy Hex Nuts
  • Nickel Alloy 800HT Plain Washer
  • Inconel 800H Ogee Washer

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UNS N08800 Fasteners Price, Dimension, Weight

Incoloy 800 Fasteners Industrial Application

Oil & Gas Industry

Oil & Gas Industry

Chemical Industry

Chemical Industry

Power Generation Industry

Power Generation Industry

Construction Industry

Construction Industry

Shipbuilding Industry

Shipbuilding Industry

Automotive Industry

Automotive Industry

Food Industry

Food Industry

Textile Industry

Textile Industry

Export & Supply Destination of Incoloy 800HT Fasteners

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