The Home of HASTELLOY® and HAYNES® alloys

Haynes International. Synonymous with High-Performance Alloys

Starting with the first cobalt, chromium-tungsten metal cutting tools Elwood Haynes pioneered for Haynes Stellite Works in 1912, Haynes International has always been a highly specialized, high-performance alloy producer.

Our high-temperature family of alloys is generally distinguished by the HAYNES® brand and our corrosion-resistant alloys by the HASTELLOY® brand. Industries often specify alloys by a UNS designation, unaware that such alloy specifications only address issues of chemical composition, not corrosion or heat resistance. We protect the alloys’ quality and assure their performance by focusing on precise control of chemical composition and thermo-mechanical processing, in addition to systematic testing.

Corrosion-Resistant Alloys

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HASTELLOY® B-3® alloy HASTELLOY® C-4 alloy HASTELLOY® C-22® alloy
HASTELLOY® C-22HS® alloy HASTELLOY® C-22HS® alloy Oil and Gas HASTELLOY® C-276 alloy
HASTELLOY® C-2000® alloy HASTELLOY® G-30® alloy HASTELLOY® G-35® alloy

High-Temperature Alloys

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HAYNES® 25 alloy HAYNES® 75 alloy HAYNES® 188 alloy
HAYNES® 214® alloy HAYNES® 230® alloy HAYNES® 242® alloy
HAYNES® 263 alloy HAYNES® 282® alloy HAYNES® 556® alloy
HAYNES® 617 alloy HAYNES® 625 alloy HAYNES® 625SQ® alloy
HAYNES® 718 alloy HAYNES® HR-120® alloy HAYNES® HR-160® alloy
HAYNES® HR-224® alloy HAYNES® NS-163® alloy HAYNES® R-41 alloy
HASTELLOY® S alloy HAYNES® Waspaloy alloy HASTELLOY® W alloy
HASTELLOY® X alloy HAYNES® X-750 alloy MULTIMET® alloy

Titanium Alloy

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HAYNES® Ti-3Al-2.5V alloy

Purple Alloys

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Purple alloy 11 Purple alloy 12

Corrosion-Resistant Alloys

The Corrosion-Resistant HASTELLOY® alloys are widely used by the chemical processing industries. The need for reliable performance leads to their acceptance and growth in the areas of energy, health and environmental, oil and gas, pharmaceutical and flue gas desulfurization industries. The attributes of HASTELLOY® alloys include high resistance to uniform attack, outstanding localized corrosion resistance, excellent stress corrosion cracking resistance, and ease of welding and fabrication. 

B-3® alloy possesses outstanding resistance to non-oxidizing acids, such as hydrochloric acid and sulfuric acid. The advantages of B-3® alloy over previous B-family alloys are enhanced thermal stability and improved fabrication characteristics. A new alloy, HASTELLOY® HYBRID-BC1® alloy will handle stronger non-oxidizing acids than C-type alloys and will tolerate oxidizing impurities that B-type alloys will not. 

The most versatile of the HASTELLOY® alloys are the "C-type" alloys. C-2000® alloy combines outstanding resistance to oxidizing media with superior resistance to non-oxidizing environments and represents a true performance breakthrough for chemical process equipment applications.  C-22® alloy is particularly resistant to pitting and crevice corrosion; it has been used extensively to protect against the most corrosive FGD systems and the most sophisticated pharmaceutical reaction vessels.

G-30® alloy has been very successful as phosphoric acid heat exchanger tubing and for other process components in the fertilizer industry. G-35® alloy was designed as an improved version of G-30 alloy in these applications.  The high chromium content of both of these alloys make them the premier choices for strong oxidizing solutions and mixed acid pickling services.

HASTELLOY® Family of Corrosion-Resistant Alloys

HASTELLOY® B-3® alloy Exhibits extremely high resistance to pure hydrochloric, hydrobromic, and sulfuric acids. Furthermore, it has greatly improved structural stability compared with previous B-type alloys, leading to fewer concerns during welding, fabrication, and service. 
HASTELLOY® C-4 alloy The most (microstructurally) stable of the widely used nickel-chromium-molybdenum materials, which are well known for their resistance to many aggressive chemicals, in particular hydrochloric acid, sulfuric acid, and chlorides. This stability means that the alloy can be welded without fear of sensitization, i.e. the nucleation and growth of deleterious, second phase precipitates in the grain boundaries of the weld heat-affected zone (HAZ).
HASTELLOY® C-22® alloy One of the well-known and well-proven nickel-chromium-molybdenum materials, the chief attributes of which are resistance to both oxidizing and non-oxidizing chemicals, and protection from pitting, crevice attack, and stress corrosion cracking. Its high chromium content provides much higher resistance to oxidizing media than the family standard, C-276 alloy, and imparts exceptional resistance to chloride-induced pitting, an insidious and unpredictable form of attack, to which the stainless steels are prone.    
HASTELLOY® C-22HS® alloy A versatile nickel-chromium-molybdenum alloy with excellent resistance to both oxidizing and reducing acids and which can be heat treated to obtain very high strength.
HASTELLOY® C-22HS® alloy Oil and Gas
HASTELLOY® C-276 alloy The first wrought, nickel-chromium-molybdenum material to alleviate concerns over welding (by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries, and now has a 50-year-old track record of proven performance in a vast number of corrosive chemicals.
HASTELLOY® C-2000® alloy Unique among the versatile nickel-chromium-molybdenum materials in having a deliberate copper addition. This provides greatly enhanced resistance to sulfuric acid. It also has a high chromium content, to maximize its resistance to oxidizing chemicals and process streams contaminated with ferric ions and dissolved oxygen.
HASTELLOY® G-30® alloy A nickel-chromium-iron material highly resistant to “wet process” phosphoric acid (P2O5).  P2O5 is one of the most important industrial chemicals, being the primary source of phosphorus for agrichemical fertilizers. G-30 alloy is also moderately resistant to chloride-induced localized attack. Furthermore, G-30 alloy is less susceptible to chloride-induced stress corrosion cracking than the stainless steels.
HASTELLOY® G-35® alloy ​Developed to resist “wet process” phosphoric acid (P2O5), which is used in the production of fertilizers. Tests in real-world solutions indicate that G-35 alloy is far superior to other metallic materials in this acid. It was also designed to resist localized attack in the presence of chlorides, since this can be a problem beneath deposits in evaporators used to concentrate “wet process” phosphoric acid. Furthermore, G-35 alloy is much less susceptible to chloride-induced stress corrosion cracking than the stainless steels and nickel-chromium-iron alloys traditionally used in “wet process” phosphoric acid.
HASTELLOY® HYBRID-BC1® alloy Possesses much higher resistance to hydrochloric, hydrobromic, and sulfuric acids than the nickel-chromium-molybdenum (C-type) alloys, and can tolerate the presence of oxidizing species. The alloy also exhibits extremely high resistance to pitting and crevice corrosion.
HASTELLOY® N alloy Good resistance to aging and embrittlement and good fabricability. It has excellent resistance to hot fluoride salts in the temperature range of 1300°F to 1600°F (705°C-870°C).
ULTIMET® alloy Provides many of the corrosion characteristics of the nickel-based HASTELLOY G-type alloys and many of the wear characteristics of the cobalt-based STELLITE alloys, in a single, highly weldable material. It excels under conditions conducive to galling and cavitation erosion.

High-Temperature Alloys

The aircraft gas turbine engine market has traditionally been the major user of HASTELLOY® and HAYNES® high-temperature alloys. Here the story has been one of incremental growth as each major advance in engine performance capitalizes on the development of newer and more efficient materials of construction.

MULTIMET® alloy was the first significant wrought HAYNES® high-temperature alloy offered to the aviation industry in the 1950's. HASTELLOY® X alloy, the next major development is still a "workhorse" of the industry. HAYNES® 188 alloy later offered engine designers a much higher temperature advantage. HAYNES® 230® alloy has gained increased use because of its unexcelled combination of high-temperature strength and oxidation resistance plus improved thermal stability. HAYNES® 242® alloy shows great promise for aircraft engine seal rings, containment rings, duct segments, casings and fasteners. The newest HAYNES® 282® alloy combines exceptional high temperature properties with good weldability and fabricability.

Outside of the aircraft industry, high performance, heat-resistant alloys offer properties never before available. Because of its superior oxidation resistance through 2200°F (1204°C), HAYNES® 214® alloy is gaining more and more applications in the ceramics, metalworking, automotive and electronics industries for "clean firing."

HAYNES® 556® and HR-160® alloys have very good resistance in waste disposal and fossil energy production because of their superior resistance to oxidation, sulfidation and molten salt attack.

HAYNES® HR-120®, 230® and 556® alloys are providing cost-effective solutions to many maintenance problems in the heat-treating and industrial heating industries because of their superior properties.alloy was designed as an improved version of G-30 alloy in these applications.  The high chromium content of both of these alloys make them the premier choices for strong oxidizing solutions and mixed acid pickling services.

HAYNES® Family of High-Temperature Alloys

HAYNES® 25 alloy A Co-Ni-Cr-W alloy that combines excellent high-temperature strength with good oxidation resistance.
HAYNES® 75 alloy Basic heat-resistant alloy used in low-stress gas turbine and industrial applications.
HAYNES® 188 alloy Excellent strength with superior oxidation resistance and thermal stability compared to HAYNES® 25 alloy . Good sulfidation resistance. Used extensively in demanding military and civil aircraft gas turbine engine combustors and other key components.
HAYNES® 214® alloy Outstanding oxidation resistance to 2300°F (1260°C), excellent resistance to carburization and excellent resistance to chlorine-bearing environments. Used in demanding industrial heating applications and specialized gas turbine parts, such as honeycomb seals.
HAYNES® 230® alloy Best balance of strength, thermal stability, oxidation resistance, thermal cycling resistance and fabricability of any major high-temperature alloy. Used in gas turbine combustors and other key stationary components. Also used for heat treating and industrial heating applications, and in the chemical/petrochemical process industry and in fossil energy plants. For welding, use 230-W® filler wire.
HAYNES® 242® alloy

Age-hardenable alloy with excellent strength to 1300°F (705°C), low thermal expansion characteristics, good oxidation resistance to 1500°F (815°C) and excellent fabricability. Also has excellent resistance to high-temperature fluorine and fluoride-bearing environments. Used in gas turbine seal rings, containment containment structures and high-strength fasteners. Also used in fluoropolymer plastics production and CPI applications.

HAYNES® 263 alloy Age-hardenable alloy with excellent strength in the 1000°F-1600°F (540°C-870°C) temperature range and excellent forming and welding characteristics.
HAYNES® 282® alloy Unique superalloy which combines exceptional high temperature properties with good weldability and fabricability.
HAYNES® 556® alloy High-strength alloy with broad spectrum of resistance to high-temperature corrosive environments. Used in waste incineration, heat-treating, calcining, chemical processing, galvanizing, refinery, boiler and gas turbine components of various types. Excellent fabricability and excellent as a dissimilar filler metal for welding nickel or cobalt alloys to iron-base alloys.
HAYNES® 617 alloy Good combination of metallurgical stability, strength, and oxidation resistance at high temperatures. Used in applications such as gas turbines for combustion cans, ducting, and transition lines.
HAYNES® 625 alloy Widely used in various aerospace, chemical process and industrial heating components.
HAYNES® 625SQ® alloy HAYNES® 625SQ® alloy sheet and strip find application in aerospace, automotive, and chemical process industry bellows, expansion joints, and fabrications where fatigue resistance, strength, and corrosion resistance are required.
HAYNES® 718 alloy Age-hardenable alloy with excellent strength to 1200°F (650°C). Used extensively in gas turbine components.
HAYNES® HR-120® alloy High-strength economical alloy, with good resistance to industrial environments. Designed for use in heat treating fixture and industrial heating applications as an upgrade from 330 alloy, 800H alloy and stainless steels. Excellent carburization and sulfidation resistance.
HAYNES® HR-160® alloy Outstanding resistance to sulfidation and other high-temperature aggressive environments. Used in waste incineration, boiler, high-temperature reaction vessel and rotary calciner applications.
HAYNES® HR-224® alloy A new alloy with excellent oxidation resistance and improved fabricability and weldability compared to HAYNES® 214® alloy.
HAYNES® NS-163® alloy HAYNES® NS-163® alloy is a wrought cobalt-based alloy for use in sheet and wire forms.
HAYNES® R-41 alloy Age-hardenable alloy with excellent strength in the 1000°F-1800°F (540°C-980°C) temperature range. Used for critical gas turbine engine components.
HASTELLOY® S alloy Excellent thermal stability, good thermal fatigue resistance, good oxidation-resistance & relatively low expansion characteristics. Used in low-stress gas turbine parts. Excellent dissimilar filler metal.
HAYNES® Waspaloy alloy Age-hardenable alloy with excellent strength in the 1000°F-1800°F (540°C-980°C) temperature range. Used for critical gas alloy turbine engine components.
HASTELLOY® W alloy Excellent for welding dissimilar high-temperature alloys. Used extensively in aircraft engine repair and maintenance.
HASTELLOY® X alloy Age-hardenable alloy with good strength to 1500°F (815°C).
HAYNES® X-750 alloy Age-hardenable alloy with good strength to 1500°F (815°C).
MULTIMET® alloy Predecessor of 556® alloy, used extensively in older aircraft gas turbines.

Titanium Alloy

HAYNES® Family of Titanium Alloy

HAYNES® Ti-3Al-2.5V alloy Alloy used where strength/weight ratio is of prime importance (43 percent lighter than 21-6-9 stainless steel). Used mostly in the form of seamless tubing for aircraft hydraulic systems.

Purple Alloys

Purple Family of Purple Alloys

Purple alloy 11 This is where I enter in the descriptions for the new alloy group called Purple Alloys 
Purple alloy 12 this is the detail and description for the purple alloy #12
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