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MATERIAL DATABASE

Nickel & Special Alloys

Discover the complete range of nickel and special alloy grades used in spiral wound gasket manufacturing. Compare corrosion resistance, mechanical properties, operating temperatures, international standards and engineering characteristics before selecting the right material for your most demanding sealing applications.

Why Nickel & Special Alloys?

Nickel and special alloys are selected for spiral wound gasket winding when standard stainless steel grades cannot withstand the operating environment. This family covers commercially pure nickel, nickel-copper, nickel-chromium, nickel-iron-chromium and refractory metal grades, each engineered for extreme corrosion resistance, elevated temperature strength or chemical compatibility beyond the capability of conventional stainless steels.

Ferrobend provides engineering information for every nickel and special alloy grade commonly used in spiral wound gasket manufacturing. Each grade includes complete chemical composition, mechanical properties, physical properties, operating temperature limits, heat treatment information, international standards and industrial applications.

Available Nickel & Special Alloy Grades

Select a nickel or special alloy grade to view detailed engineering properties including chemical composition, mechanical values, operating temperature, heat treatment and international standards.

Nickel 200

Nickel 200 is a commercially pure wrought nickel offering outstanding resistance to caustic alkalis and reducing chemicals. Its high thermal and electrical conductivity make it a preferred winding material for food processing, caustic handling and chemical drum service, though service is limited below 315°C to avoid graphitization.

ASTM B160/B162 UNS N02200 Max. 315°C Commercially Pure

Nickel 201

Nickel 201 is the low-carbon version of Nickel 200, specifically developed to resist graphitization and embrittlement at elevated temperatures. It is the preferred winding material wherever service temperatures exceed the limits of Nickel 200, including caustic evaporators and high-temperature electronic components.

ASTM B160/B162 UNS N02201 Max. 677°C Low Carbon

Monel 400

Monel 400 is a nickel-copper alloy renowned for exceptional resistance to seawater, hydrofluoric acid and a wide range of reducing chemical environments. Its excellent mechanical performance from sub-zero to elevated temperatures makes it a proven winding material for marine, offshore and chemical processing gasket applications.

ASTM B127 UNS N04400 Max. 500°C Ni-Cu Alloy

Inconel 600

Inconel 600 is a nickel-chromium alloy offering excellent resistance to oxidation, carburization and chloride-ion stress corrosion cracking at elevated temperatures. It is widely selected for gasket winding in heat treatment, chemical processing and high-temperature furnace applications.

ASTM B168 UNS N06600 Max. 650°C Ni-Cr Alloy

Inconel 625

Inconel 625 is a nickel-chromium-molybdenum-niobium alloy offering outstanding strength and fatigue resistance without requiring heat treatment. Its excellent resistance to pitting, crevice corrosion and high-temperature oxidation make it a top choice for the most demanding oil and gas and marine gasket applications.

ASTM B443/B444 UNS N06625 Max. 800°C Ni-Cr-Mo Alloy

Inconel 718

Inconel 718 is a precipitation-hardening nickel-chromium alloy delivering exceptionally high strength, creep resistance and fatigue performance from cryogenic temperatures up to approximately 700°C. It is specified for the most severe high-stress, high-temperature gasket applications in aerospace, oil and gas and power generation.

ASTM B637 UNS N07718 Max. 700°C Precipitation Hardened

Inconel 800

Inconel 800 is an iron-nickel-chromium alloy with moderate strength and good resistance to oxidation and carburization at elevated temperatures. It resists formation of embrittling sigma phase after long exposure at high temperature, making it well suited for petrochemical furnace and heat-treatment equipment gaskets.

ASTM B408 UNS N08800 Max. 649°C Fe-Ni-Cr Alloy

Inconel 825

Inconel 825 is a nickel-iron-chromium alloy with added molybdenum and copper, offering exceptional resistance to sulfuric acid, phosphoric acid and chloride stress corrosion cracking. It is a proven winding material for sulfuric acid pickling equipment, sour gas piping and seawater-cooled heat exchanger gaskets.

ASTM B424 UNS N08825 Max. 540°C Ni-Fe-Cr Alloy

Alloy 20

Alloy 20 is a nickel-iron-chromium alloy developed specifically for outstanding resistance to sulfuric acid across a wide range of concentrations and temperatures. It is a standard winding material choice for sulfuric acid production, chemical processing and pharmaceutical equipment gaskets.

ASTM B463/B472 UNS N08020 Max. 260°C Sulfuric Acid Resistant

Hastelloy C22

Hastelloy C22 is a nickel-chromium-molybdenum-tungsten alloy offering outstanding resistance to both oxidizing and reducing media, including wet chlorine, mixed acids and chloride-contaminated environments. Its exceptional weldability and resistance to grain boundary precipitation make it suitable for as-welded severe service gasket applications.

ASTM B575 UNS N06022 Max. 677°C Ni-Cr-Mo-W Alloy

Hastelloy C276

Hastelloy C276 is a nickel-molybdenum-chromium alloy with a tungsten addition, developed for exceptional resistance to pitting, crevice corrosion and stress corrosion cracking. It is one of the most broadly corrosion-resistant winding materials available, suited to mixed-acid, chloride and high-temperature process conditions.

ASTM B575 UNS N10276 Max. 315°C Ni-Mo-Cr Alloy

Titanium Grade 2

Titanium Grade 2 is a commercially pure titanium grade offering excellent corrosion resistance to seawater, chlorides and oxidizing acids at a favorable strength-to-weight ratio. It is a widely specified winding material for desalination, marine and chlor-alkali gasket applications.

ASTM B265 UNS R50400 Max. 315°C Commercially Pure

Titanium Grade 5

Titanium Grade 5, also known as Ti-6Al-4V, is an alpha-beta titanium alloy offering significantly higher strength than commercially pure titanium grades while retaining excellent corrosion resistance. It is selected for gasket winding where higher mechanical strength is required alongside titanium's corrosion performance.

ASTM B265 UNS R56400 Max. 315°C Ti-6Al-4V

Zirconium

Zirconium 702 offers outstanding resistance to hydrochloric acid, sulfuric acid and other highly aggressive reducing media where even nickel alloys are unsuitable. Its exceptional chemical inertness makes it a specialized winding material for the most severe acid-handling gasket applications.

ASTM B551 UNS R60702 Max. 482°C Reactive Metal

Tantalum

Tantalum is a refractory metal offering near-universal resistance to acids, including hydrochloric, nitric and sulfuric acid across almost all concentrations and temperatures. Its exceptional corrosion resistance makes it the material of choice for winding gaskets in the most chemically aggressive process environments.

ASTM B708 UNS R05200 Max. 300°C Refractory Metal

Typical Applications

Nickel and special alloy spiral wound gasket materials are used across industries requiring reliable sealing in the most severe corrosion, temperature and pressure conditions.

Oil & Gas

Sour service piping, subsea equipment, high-pressure wellheads and offshore platforms.

Chemical Plants

Reactors, acid handling equipment, heat exchangers and pumps handling aggressive media.

Petrochemical

Furnace components, high-temperature process equipment and refinery piping systems.

Power Generation

Boilers, superheater tubing and high-temperature turbine auxiliary systems.

Marine & Offshore

Seawater piping, desalination plants and saltwater-cooled heat exchangers.

Pharmaceutical

High purity production equipment and sanitary processing systems.

Why Choose Nickel & Special Alloys?

Extreme Corrosion Resistance

Performance in acids, chlorides and reducing environments beyond stainless steel capability.

High Temperature Strength

Maintains sealing integrity and mechanical strength across extreme operating temperature ranges.

Proven Fabrication

Established forming, machining and welding practices for gasket manufacturing.

International Standards

Available according to ASTM, ASME, EN, DIN and JIS material specifications.

Frequently Asked Questions

When should a nickel or special alloy be selected over stainless steel?

Nickel and special alloys are selected when the process media, temperature or chloride content exceeds the corrosion or strength capability of standard and duplex stainless steel grades.

Which grade offers the broadest chemical resistance?

Hastelloy C276 and Hastelloy C22 offer some of the broadest resistance to both oxidizing and reducing media, while Tantalum and Zirconium are reserved for the most severe acid environments.

Which grade performs best at elevated temperatures?

Inconel 625, Inconel 718 and Inconel 800 are commonly selected for elevated-temperature service because of their superior high-temperature strength and oxidation resistance.

Need Help Selecting the Right Nickel or Special Alloy Grade?

Our engineering team can help you select the most suitable nickel or special alloy grade for your operating pressure, temperature and service environment.

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