These nickel alloy Olet Fittings are used extensively in applications where
heat resistance and/or corrosion resistance is required. Nickel Alloy
Olet Fittings in this class are designed to resist failure from both of these
mechanisms. Nickel alloy Olet Fittings are not suitable for high temperature
sulphur rich environments.This nickel alloy Olet Fittings are frequently
sold under trade name specifications but most are listed in the Unified
Numbering System. Common trade names are HASTELLOY, INCOLOY, INCONEL,
NICROFER, NICROM and NIMONIC.
Nickel alloys Olet Fittings have higher strength and longer life at elevated
temperature than most alloys. The designer however, must determine
the expected life of each component and use the appropriate creep
and rupture strength in the design before selecting Olet Fittings.
Nickel alloy Olet Fittings are used in many applications
where they are subjected to harsh environments at high temperatures.
Nickel alloys Olet Fittings offer excellent corrosion resistance to a wide
range of corrosive media. However, as with all types of corrosion,
many factors influence the rate of attack. Nickel alloy Olet Fittings found
to have a profound effect on the thermal expansion of iron.
Some high-temperature variants include:
Nickel Alloy 601 Olet Fittings - Lower nickel (61%) content with aluminum
and silicon additions for improved oxidation and nitriding resistance.
Nickel Alloy X750 Olet Fittings - Aluminum and titanium additions for
age hardening
Nickel Alloy 718 Olet Fittings -Titanium and niobium additions to overcome
strainage cracking problems during welding and weld repair
Nickel Alloy X (48Ni-22Cr-18Fe-9Mo + W) Olet Fittings -High-temperature
flat-rolled product for aerospace applications
Nickel Waspaloy (60Ni-19Cr-4Mo-3Ti-1.3Al) Olet Fittings - Proprietary
alloy for jet engine applications
Some corrosion-resistant variants in the Ni-Cr-Fe system include.
Nickel Alloy 625 Olet Fittings - The addition of 9% Mo plus 3% Nb offers
both high-temperature and wet corrosion resistance; resists pitting
and crevice corrosion.
Nickel Alloy G3/G30 (Ni-22Cr-19Fe-7Mo-2Cu) Olet Fittings -The increased
molybdenum content in these alloys offers improved pitting and crevice
corrosion resistance.
Nickel Alloy C-22 (Ni-22Cr-6Fe-14Mo-4W) Olet Fittings -Superior corrosion
resistance in oxidizing acid chlorides, wet chlorine, and other
severe corrosive environments.
Nickel Alloy C-276 (17% Mo plus 3.7W) Olet Fittings -Good seawater corrosion
resistance and excellent pitting and crevice corrosion resistance.
Nickel Alloy 690 (27% Cr addition) Olet Fittings -Excellent
oxidation and nitric acid resistance; specified for nuclear waste
disposal by the vitreous encapsulation method.
Iron-Nickel-Chromium Alloys Olet Fittings. This series of alloy Olet Fittings
has also found extensive use in the high-temperature petrochemical
environments, where sulfur-containing feedstocks (naphtha and
heavy oils) are cracked into component distillate parts. Not only
were these Olet Fittings resistant to chloride-ion stress-corrosion cracking,
but they also offered resistance to polythionic acid cracking.
Some alloys of commercial importance include:
Nickel Alloy 800 (Fe-32Ni-21Cr) Olet Fittings -The basic alloy in the
Fe-Ni-Cr system; resistant to oxidation and carburization at elevated
temperatures.
Nickel Alloy 800HT Olet Fittings -Similar to 800H with further modification
to combined titanium and aluminum levels (0.85 to 1.2%) to ensure
optimum high-temperature properties.
Nickel Alloy 801 Olet Fittings -Increased titanium content (0.75 to 1.5%);
exceptional resistance to polythionic acid cracking.
Nickel Alloy 802 Olet Fittings -High-carbon version (0.2 to 0.5%) for
improved strength at high temperatures.
Nickel Alloy 825 (Fe-42Ni-21.5Cr-2Cu) Olet Fittings -Stabilized with
titanium addition (0.6 to 1.2%). Also contains molybdenum (3%) for
pitting resistance in aqueous corrosion applications. Copper content
bestows resistance to sulfuric acid.
Nickel Alloy 925 Olet Fittings -Addition of titanium and aluminum to
825 composition for strengthening through age hardening.
Nickel Alloy Olet Fittings has catalytic properties
Nickel Alloy O'let Fittings Applications
Nickel and nickel alloys are used for a wide variety of applications,
the majority of which involve corrosion resistance and/or heat resistance.
Some of these include:
• Aircraft gas turbines
• Steam turbine power plants
• Medical applications
• Nuclear power systems
• Chemical and petrochemical industries
A number of other applications for nickel alloy Olet Fittings involve the
unique physical properties of special-purpose nickel-base or high-nickel
alloys. These include:
• Low-expansion alloys
• Electrical resistance alloys
• Soft magnetic alloys
• Shape memory alloys
We are so precise in our quality and confident about our Quality
Nickel alloy Olet Fittings that we can offer our it with any world known
third party inspection and certifications.
Lloyds
SGS
BVQI
IRS
DNV
Marking on Nickel Alloy Olet Fittings
All Nickel Alloy Olet Fittings are having marking with alloy name, Standard,
Size, pressure class and heat number.
Nickel alloy Olet Fittings Manufacturers and Suppliers
We Welcomes Distributors for Nickel alloy Olet Fittings
All these Nickel Alloy Olet Fittings are offered with a NACE 3.1 or 3.2
Mill Test Certification. Positive Material Identification (PMI) is
done on all raw material procured by us, irrelavent to quantity and
source of our supply.
Trade Names and Owners of Nickel Alloys
HASTELLOY is a registered trade name of Haynes Intl.
INCOLOY, INCONEL, MONEL and NIMONIC are registered trade names of
the INCO family of companies.
INVAR is a registered trademark of Imphy S.A.
MU-METAL is a registered trademark of Telcon Metals Ltd
NICORROS and NICROFER are registered tradenames of Krupp UM GmbH
