what is the difference between hastelloy c22 and c276?

Hastelloy C22 is an upgraded version of C276. Chemical Composition (Key Difference): C22 has a higher chromium (Cr) content (20-22.5%) and a slightly higher molybdenum (Mo) content (12.5-14.5%). C276 has a lower Cr content (14.5-16.5%) and a Mo content of 15-17%. Corrosion Resistance: C22 significantly outperforms C276 in pitting and crevice corrosion resistance in oxidizing media (such as hot Fe⁺, Cu⁺⁺ brines, and hypochlorites) and in the welded state. C22 also has a wider operating temperature range. Weldability : C22 offers improved weldability, exhibits less corrosion degradation in the heat-affected zone after welding, and is less prone to the precipitation of harmful phases.

Hastelloy C22 Suppliers

Gnee provides high quality Hastelloy C22 products including plates, coils, tubes, bars, etc. All products meet ASTM B575, B622, B366 standards and have a complete quality assurance system and complete certification. Factory price, free samples available!

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UNS N06022

Versatile Nickel Chromium Alloy

Superior Pitting Resistance

Hastelloy C22 Products

Engineered for Longevity

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Hastelloy C22 Manufacturer

As a leading supplier of high-performance alloys, we provide the premier grade UNS N06022 Hastelloy C22. Including Hastelloy C22 plate, sheet, wire, fittings, pipes, bars, etc. This versatile nickel-chromium-molybdenum-tungsten alloy delivers exceptional, all-around resistance to pitting, crevice corrosion, and stress corrosion cracking, making it the ideal choice for aggressive environments in chemical processing, pharmaceutical, and wastewater treatment.

Beyond supplying top-quality material in various forms, we offer comprehensive services including technical material selection support, custom sizing and fabrication, and just-in-time delivery, ensuring a complete solution tailored to your application.

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Customization	Supports custom sizes, cutting, welding, and surface treatment

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we have various Shapes of Hastelloy C22 in large stock

Gnee is a leading manufacturer and global supplier of high-performance materials, specializing in a wide range of Hastelloy alloy, including Hastelloy C22. With over a decade of industry experience, we have established a strong presence in key international markets, including Europe, North America, the Middle East, and Southeast Asia.

Hastelloy C22 seamless pipe
Hastelloy C22 Round Bar
Hastelloy C22 Forge Fittings
Hastelloy C22 Wire
Hastelloy C22 Sheet
Hastelloy C22 Plate
Hastelloy C22 Welded Pipe

Description

Hastelloy C22 is a versatile nickel-chromium-molybdenum-tungsten alloy renowned for its exceptional corrosion resistance across diverse aggressive environments. Unlike other nickel alloys, C22 excels in resisting pitting, crevice corrosion, and stress corrosion cracking, even in oxidizing and reducing conditions.

It is particularly effective in environments containing chlorides, nitric acid, and mixed chemical streams. For instance, its corrosion rate in hydrochloric acid is significantly lower than similar alloys like Hastelloy C 276, making it a preferred choice for chemical reactors, heat exchangers, and scrubbers. With a tensile strength of approximately 690 MPa and high weldability, C22 offers a combination of durability and ease of fabrication, ensuring reliability in demanding industrial applications.

Hastelloy C22 Product Parameters

Parameter	Description
Material Grade	Hastelloy C22
Chemical Composition	Ni: 56%, Mo: 13-15%, Cr: 20-22.5%, Fe: 2-6%
Density	8.69 g/cm³
Melting Point	1350–1400°C
Tensile Strength	≥690 MPa
Yield Strength (0.2%)	≥310 MPa
Elongation	≥45%
Standards	ASTM B575, ASTM B622, ASTM B619
Size	Plates: 4-100mm; Pipes: OD 6-630mm; Bars: Dia 10-400mm
Forms	Plate, Sheet, Bar, Pipe, Fitting, Flange, Wire
Manufacturing Process	Hot Rolling, Cold Rolling, Extrusion, Forging
Applications	Chemical, Marine, Pharmaceutical

What ASTM standards of Alloy C-22 can Gnee produce?

ASTM Specifications	– ASTM B575: Nickel Alloy Plate, Sheet, and Strip
	– ASTM B619: Welded Nickel Alloy Pipe
	– ASTM B622: Seamless Nickel Alloy Pipe and Tube
	– ASTM B626: Welded Nickel Alloy Tube
	– ASTM B366: Nickel Alloy Pipe Fittings
AMS	– AMS 5837: Welding Rods and Electrodes
	– AMS 5676: Wire

alloy UNS N06022 Equivalent grades

UNS N06022
W.Nr. 2.4602
DIN NiCr21Mo14W

Features and Advantages

Exceptional Corrosion Resistance: Offers superior resistance to oxidizing and reducing environments, including wet chlorine, nitric acid, and ferric chloride.
Versatile Performance: Suitable for handling mixed acids, chlorides, and other aggressive chemicals.
Pitting and Crevice Corrosion Resistance: Excellent protection against localized attacks in harsh conditions.
Thermal Stability: Retains mechanical properties and corrosion resistance at elevated temperatures.
Weldability: Compatible with standard welding techniques, maintaining corrosion resistance in the weld zone.
Durability: High strength and toughness in severe industrial environments.
Compliance: Meets rigorous industry standards for chemical processing, pharmaceutical, and aerospace applications.

Parameter Information

Hastelloy C-22 Chemical Composition

Element	Composition (%)
Nickel (Ni)	56.0 min
Chromium (Cr)	20.0 – 22.5
Molybdenum (Mo)	12.5 – 14.5
Tungsten (W)	2.5 – 3.5
Iron (Fe)	2.0 – 6.0
Cobalt (Co)	2.5 max
Manganese (Mn)	0.50 max
Silicon (Si)	0.08 max
Carbon (C)	0.015 max
Phosphorus (P)	0.02 max
Sulfur (S)	0.02 max

Hastelloy C-22 Tensile Strength and Elongation

Form	Test Temperature		Thickness/Bar Diameter		0.2% Offset Yield Strength		Ultimate Tensile Strength		Elongation
Form	°F	°C	in	mm	ksi	MPa	ksi	MPa	%
Sheet	RT	RT	0.028-0.125	0.7-3.2	59	407	116	800	57
Sheet	200	93	0.028-0.125	0.7-3.2	54	372	110	758	58
Sheet	400	204	0.028-0.125	0.7-3.2	44	303	102	703	57
Sheet	600	316	0.028-0.125	0.7-3.2	42	286	98	676	62
Sheet	800	427	0.028-0.125	0.7-3.2	41	283	95	655	67
Sheet	1000	538	0.028-0.125	0.7-3.2	40	276	91	627	61
Sheet	1200	649	0.028-0.125	0.7-3.2	36	248	85	586	65
Sheet	1400	760	0.028-0.125	0.7-3.2	35	241	76	524	63
Plate	RT	RT	0.25-0.75	6.4-19.1	54	372	114	786	62
Plate	200	93	0.25-0.75	6.4-19.1	49	338	107	738	65
Plate	400	204	0.25-0.75	6.4-19.1	41	283	98	676	66
Plate	600	316	0.25-0.75	6.4-19.1	36	248	95	655	68
Plate	800	427	0.25-0.75	6.4-19.1	35	241	92	634	68
Plate	1000	538	0.25-0.75	6.4-19.1	34	234	88	607	67
Plate	1200	649	0.25-0.75	6.4-19.1	32	221	83	572	69
Plate	1400	760	0.25-0.75	6.4-19.1	31	214	76	524	68
Bar	RT	RT	0.5-2.0	12.7-50.8	52	359	111	765	70
Bar	200	93	0.5-2.0	12.7-50.8	45	310	105	724	73
Bar	400	204	0.5-2.0	12.7-50.8	38	262	96	662	74
Bar	600	316	0.5-2.0	12.7-50.8	34	234	92	634	79
Bar	800	427	0.5-2.0	12.7-50.8	31	214	89	614	79
Bar	1000	538	0.5-2.0	12.7-50.8	29	200	84	579	80
Bar	1200	649	0.5-2.0	12.7-50.8	28	193	80	552	80
Bar	1400	760	0.5-2.0	12.7-50.8	29	200	72	496	77

Values are averages from numerous tests
RT= Room Temperature

Hastelloy C-22 Hardness

Form	Hardness, HRBW	Typical ASTM Grain Size
Sheet	88	3.5 – 5.5
Plate	88	0 – 4.5
Bar	84	1 – 3.5

All samples tested in solution-annealed condition.
HRBW = Hardness Rockwell “B”, Tungsten Indentor.

Hastelloy C-22 Physical Properties

Physical Property	British Units		Metric Units
Density	RT	0.314 lb/in3	RT	8.69 g/cm3
Electrical Resistivity	RT	44.9 μohm.in	RT	1.14 μohm.m
	200°F	48.0 μohm.in	100°C	1.23 μohm.m
	400°F	48.8 μohm.in	200°C	1.24 μohm.m
	600°F	49.3 μohm.in	300°C	1.25 μohm.m
	800°F	49.7 μohm.in	400°C	1.26 μohm.m
	1000°F	50.1 μohm.in	500°C	1.27 μohm.m
	–	–	600°C	1.28 μohm.m
Thermal Conductivity	100°F	69 Btu.in/h.ft2.°F	50°C	10.1 W/m.°C
	200°F	76 Btu.in/h.ft2.°F	100°C	11.1 W/m.°C
	400°F	94 Btu.in/h.ft2.°F	200°C	13.4 W/m.°C
	600°F	110 Btu.in/h.ft2.°F	300°C	15.5 W/m.°C
	800°F	125 Btu.in/h.ft2.°F	400°C	17.5 W/m.°C
	1000°F	139 Btu.in/h.ft2.°F	500°C	19.5 W/m.°C
	–	–	600°C	21.3 W/m.°C
Thermal Diffusivity	RT	0.004 in2/s	RT	0.027 cm2/s
	200°F	0.005 in2/s	100°C	0.030 cm2/s
	400°F	0.005 in2/s	200°C	0.035 cm2/s
	600°F	0.006 in2/s	300°C	0.039 cm2/s
	800°F	0.007 in2/s	400°C	0.042 cm2/s
	1000°F	0.007 in2/s	500°C	0.046 cm2/s
	–	–	600°C	0.048 cm2/s
Mean Coefficient of Thermal Expansion	75-200°F	6.9 μin/in.°F	24-100°C	12.4 μm/m.°C
	75-400°F	6.9 μin/in.°F	24-200°C	12.4 μm/m.°C
	75-600°F	7.0 μin/in.°F	24-300°C	12.6 μm/m.°C
	75-800°F	7.4 μin/in.°F	24-400°C	13.1 μm/m.°C
	75-1000°F	7.7 μin/in.°F	24-500°C	13.7 μm/m.°C
	75-1200°F	8.1 μin/in.°F	24-600°C	14.3 μm/m.°C
	75-1400°F	8.5 μin/in.°F	24-700°C	14.9 μm/m.°C
	75-1600°F	8.8 μin/in.°F	24-800°C	15.5 μm/m.°C
	75-1800°F	9.0 μin/in.°F	24-900°C	15.9 μm/m.°C
Specific Heat	100°F	0.098 Btu/lb.°F	50°C	414 J/kg.°C
	200°F	0.101 Btu/lb.°F	100°C	423 J/kg.°C
	400°F	0.106 Btu/lb.°F	200°C	444 J/kg.°C
	600°F	0.111 Btu/lb.°F	300°C	460 J/kg.°C
	800°F	0.114 Btu/lb.°F	400°C	476 J/kg.°C
	1000°F	0.118 Btu/lb.°F	500°C	485 J/kg.°C
	–	–	600°C	514 J/kg.°C
Dynamic Modulus of Elasticity	RT	29.9 x 106psi	RT	206 GPa
	200°F	29.4 x 106psi	200°C	197 GPa
	400°F	28.5 x 106psi	300°C	191 GPa
	600°F	27.6 x 106psi	400°C	185 GPa
	800°F	26.6 x 106psi	500°C	179 GPa
	1000°F	25.7 x 106psi	600°C	174 GPa
	1200°F	24.8 x 106psi	700°C	168 GPa
	1400°F	23.6 x 106psi	800°C	160 GPa
	1600°F	22.4 x 106psi	900°C	152 GPa
	1800°F	21.1 x 106psi	1000°C	144 GPa
Melting Range	2475-2550°F	–	1357-1399°C	–

RT= Room Temperature

Size Chart Of Hastelloy C22

Hastelloy C22 Plate & Sheet Specifications

Item	Specifications
Product Form	Sheet, Plate
Governing Standards	ASTM B575, ASME SB575
Common Thickness	0.038 inches to 2 inches (approx. 0.97 mm to 50.8 mm)
Common Width	Up to 12 inches for coil, wider for plate
Condition/Temper	Solution Annealed

Hastelloy C22 Tube & Pipe Specifications

Item	Specifications
Product Form	Seamless Tube/Pipe, Welded Tube/Pipe
Governing Standards	Seamless: ASTM B622, ASME SB622 Welded: ASTM B619, B626; ASME SB619, SB626
Common Sizes	Nominal Bore: 15″ NB to 150″ NB Schedules: SCH5, SCH10, SCH40, SCH80, SCH160, STD Types: Seamless, Welded, ERW, Machined
Common Lengths	Single Random, Double Random, Cut Length
Condition/Temper	Solution Heat Treated

Hastelloy C22 Bar Specifications

Item	Specifications
Product Form	Round Bar, Hexagonal Bar
Governing Standards	ASTM B574, ASME SB574
Common Diameter	2 mm to 350 mm
Common Lengths	1000 mm, 2000 mm, 3000 mm, and other standard lengths
Condition/Temper	Solution Annealed

Hastelloy C22 Wire Specifications

Item	Specifications
Product Form	Wire, Rod
Common Diameter	0.5 mm to 7.5 mm
Surface Finish	Bright Annealed, Bright Surface
Condition/Temper	Soft Annealed

what is hastelloy c22 used for？

After decades of verification, Gnee has a mature production process, and Hastelloy C22 has been supplied to the following industries around the world

Hastelloy C22 plate/sheet

Chemical Industry: Reactor shells, storage tank linings, pickling tank bodies
Environmental Protection Industry: Flue gas desulfurization tower linings, etc.
Food and Pharmaceutical Industry: Sterile reactor linings

Hastelloy C22 Bar/Forge

Bar Applications: Valve spools, pump shafts, agitator shafts, and small flanges, bolts, and other connectors
Forging Applications: Large flanges, core components of wellhead equipment, agitator shaft flanges for high-pressure reactors, etc.

Hastelloy c22 pipe/tube

Chemical and Petrochemical Industry: Strong acid pipelines, heat exchanger tube bundles, etc.
Oil Extraction: Downhole oil casing, wellhead production pipelines, etc.
Nuclear Power Industry: Radioactive waste pipelines, etc.

Hastelloy c276 bar/rod

Welding Industry: As welding wire for Hastelloy C22 sheet and pipes, etc.
Precision Components: Small springs and filter screens for corrosion-resistant precision structures in chemical instruments and medical equipment.

Gnee Alloys-nickel alloy Rich Grades For Sale

In addition to Hastelloy C22, we can also provide the following grades of nickel-based alloys

Inconel Alloy Grades
Hastelloy Alloy Grades
Monel Alloy Grades
Incoloy Alloy Grades
Pure Nickel Grades

Inconel 690 (UNS N06690, EN 2.4642)
Inconel 725 (UNS N07725, EN 2.4959)
Inconel X-750 (UNS N07750, EN 2.4669)

Inconel 617 (UNS N06617, EN 2.4663)
Inconel 693 (UNS N06693)
Inconel 738 (UNS N07738)

Hastelloy B (UNS N10001, EN 2.4617)
Hastelloy B-2 (UNS N10665, EN 2.4617)
Hastelloy B-3 (UNS N10675, EN 2.4600)

Hastelloy G-30 (UNS N06030, EN 2.4603)
Hastelloy G-35 (UNS N06035)
Hastelloy X (UNS N06002, EN 2.4665)

Monel 400 (UNS N04400, EN 2.4360)
Monel 401 (UNS N04401)
Monel 404 (UNS N04404)

Monel R-405 (UNS N04405)
Monel K-500 (UNS N05500, EN 2.4375)

Incoloy 825 (UNS N08825, EN 2.4858)
Incoloy 925 (UNS N09925)
Incoloy 926 (UNS N08926, EN 1.4529)

Incoloy 330 (UNS N08330, EN 1.4886)
Incoloy 25-6Mo (UNS N08926, EN 1.4529)

FAQ

Below are some frequently asked questions about Hastelloy C22. If you have any other questions, please feel free to contact us.

We can customize plates, tubes, bars, forgings, and wire. We can also process Hastelloy C22 into finished components such as valve cores, flanges, and agitator shafts upon request

It can withstand temperatures up to 1093°C in oxidizing environments and can operate stably up to approximately 815°C in reducing environments, making it suitable for most high-temperature industrial applications.

It is extremely resistant to localized corrosion (pitting and crevice corrosion) and stress corrosion cracking, and can withstand strong acids such as sulfuric acid and hydrochloric acid, as well as high chloride ion environments.

They comply with standards such as ASTM B575 (plate), ASTM B622 (pipe), and ASTM B574 (rod). In some cases, they can also meet ASME BPVC and NACE MR0175 requirements.

Hastelloy C22 is an upgraded version of C276.

Chemical Composition (Key Difference): C22 has a higher chromium (Cr) content (20-22.5%) and a slightly higher molybdenum (Mo) content (12.5-14.5%). C276 has a lower Cr content (14.5-16.5%) and a Mo content of 15-17%.
Corrosion Resistance: C22 significantly outperforms C276 in pitting and crevice corrosion resistance in oxidizing media (such as hot Fe⁺, Cu⁺⁺ brines, and hypochlorites) and in the welded state. C22 also has a wider operating temperature range.
Weldability: C22 offers improved weldability, exhibits less corrosion degradation in the heat-affected zone after welding, and is less prone to the precipitation of harmful phases.

Custom orders are welcome

Gnee, a trusted China-based nickel alloy manufacturer since 2008, delivers precision-engineered nickel alloy pipe solutions tailored to your industrial requirements. We offer fully customizable specifications including diameters (6mm to 2000mm), wall thickness (0.5mm to 50mm), and lengths (up to 18m), working with premium materials like Inconel®, Hastelloy®, and Monel®.

Our in-house metallurgists utilize advanced hot extrusion and cold drawing techniques to meet ASTM/ASME/DIN standards, complete with EN 10204 3.1 certification and full traceability. Partner with us for seamless customization from prototype to bulk production with 30-60 day lead times.

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Other Hastelloy Alloy products

Why Choose Gnee?

Rich Inventory

Nickel Alloy Inventory

Gnee maintains a rich inventory of high-performance nickel alloys, including Inconel, Incoloy, Hastelloy, Monel, and Stainless Steel Alloy grades. Our extensive stock ensures that we can meet the immediate needs of our customers, offering a wide range of sizes, forms, and specifications, from plates and bars to tubes and fittings. With quick access to critical materials, we minimize lead times and provide fast, reliable solutions

Inconel Alloy
Monel Alloy
Hastelloy Alloy
Nickel
Nimonic Alloy
Stainless Steel Alloy

Secure Packaging

Our export packaging complies with international standards for shipping and handling, ensuring the safe delivery of nickel alloys to various countries.

Common packaging methods

Pallet packaging: Plates and sheets are usually placed on pallets for added stability
Bundle packaging: Rods and tubes are often bundled together and secured with steel straps or high-strength straps
Crate packaging: Wooden crates offer good protection and stability
Foam protection packaging: Small accessories are often individually wrapped with foam
Reel packaging: Wire is usually rolled into a round reel and wrapped with anti-corrosion material

In addition, if you have special requirements for packaging methods, we provide customized services to meet your personalized needs. Whether it is additional protection measures or special packaging materials, we can adjust according to your specific requirements. Our goal is to ensure that your goods arrive at their destination safely and intact.

Special customized packaging

Size customization: Design special brackets or reinforcement materials for extra-long steel and special-shaped steel.
Environmentally friendly packaging: Use degradable or recyclable packaging materials to meet customers’ green environmental protection requirements.
Brand logo: Provide customers with packaging with company logos or special marks to facilitate brand identification and logistics management.
Special protection: Such as adding shock-proof cushions or built-in pressure-resistant brackets for packaging of precision steel or high value-added products.

export to 70+ countries

Gnee steel products have been exported to many countries and regions, including:

Asia: Such as Japan, India, South Korea, Singapore, Malaysia, Thailand
Middle East: Such as United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
Africa: Such as South Africa, Egypt, Nigeria, Kenya, Algeria, Morocco
America: Such as Canada, Mexico, Brazil, Argentina, Chile
Europe: Such as Germany, United Kingdom, France, Italy, Spain, Russia, Poland

No matter where the customer is located, Gnee can respond quickly with a complete logistics network.

Testing Services

We ensure the quality and performance of our nickel alloy products through the following testing services:

Chemical Composition Analysis
Mechanical Properties Testing
Hardness Testing
Non-Destructive Testing (NDT)
Dimensional Inspection
Visual Surface Inspection
Corrosion Resistance Evaluation
Test Report

Processing Services

We understand that every project has unique requirements. To support our customers, we offer a range of practical and efficient processing services for nickel alloy products, including:

Cutting Services: such as laser cutting, plasma cutting or water jet cutting, etc.
Sheet Metal Processing: such as stamping, bending, shearing
Welding Services: such as TIG welding, MIG welding, electron beam welding, etc.
Surface Treatment: such as polishing, electroplating, sandblasting, etc.
Heat Treatment: including annealing, quenching, tempering, etc.
Customized Processing: According to the specific needs of customers, we provide customized nickel alloy processing services, including customization in shape, size, thickness, etc.