ASTM B622 Hastelloy C276 Tubes

Hastelloy C276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures. This nickel alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process application in an as welded condition.

Although there are several variations of the Hastelloy nickel alloy, Hastelloy C-276 is by far the most widely used.

Alloy C-276 is widely used in the most severe environments such as chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment, and recovery of sour natural gas.

 

ASTM B622 Hastelloy C276 Seamless Tubes Specification	ASTM B622 / ASME SB622 / UNS N010276 / UNS NO6022
ASTM B622 Hastelloy C276 Seamless Tubes Grades	ASTELLOY C276 / HASTELLOY C22 / ALLOY C276 / ALLOY C22
ASTM B622 Hastelloy C276 Seamless Tubes Type	ot Rolled / Cold Drawn / Welded / ERW
ASTM B622 Hastelloy C276 Seamless Tubes Outer Diameter Size	Seamless - 1/4" NB to 6" NB (Nominal Bore Size) Welded / ERW- 1" NB to 16" NB (Nominal Bore Size)
ASTM B622 Hastelloy C276 Seamless Tubes Wall Thickness	Schedule 10 to Schedule 160
ASTM B622 Hastelloy C276 Seamless Tubes Length	5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size.
ASTM B622 Hastelloy C276 Seamless Tubes Ends	Plain Ends / Beveled Ends
ASTM B622 Hastelloy C276 Seamless Tubes Delivery Conditions	As Rolled, Cold Drawn, Hot Finish, Stress Relieved, Annealed, Hardened, Tempered
ASTM B622 Hastelloy C276 Seamless Tubes Coating	Electropolish, Mechanical Polish, Satin Finish, Passivated
ASTM B622 Hastelloy C276 Seamless Tubes Other Testing	NACE MRO175, Hardness Test, Flare, Hydrostatic Test, Eddy Current test, Grain Size Test, Eddy Current, Annealed, Tempered, Stress Relieved etc.
ASTM B622 Hastelloy C276 Seamless Tubes Dimension	All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME
ASTM B622 Hastelloy C276 Seamless Tubes Value Added Services	Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
ASTM B622 Hastelloy C276 Seamless Tubes Packaging	Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
ASTM B622 Hastelloy C276 Seamless Tubes Shipment & Transportation	By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
ASTM B622 Hastelloy C276 Seamless Tubes Material Test Certificate	Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

The chemical composition of HASTELLOY(r) C276 is outlined in the following table.

Element	Content (%)
Nickel, Ni	57
Molybdenum, Mo	15-17
Chromium, Cr	14.5-16.5
Iron, Fe	4-7
Tungsten, W	3-4.50
Cobalt, Co	2.50
Manganese, Mn	1
Vanadium, V	0.35
Silicon, Si	0.080
Phosphorous, P	0.025
Carbon, C	0.010
Sulfur, S	0.010

The following table shows the physical properties of HASTELLOY(r) C276

Properties	Metric	Imperial
Density	8.89 g/cm³	0.321 lb/in³
Melting point	1371°C	2500°F

Properties	Metric	Imperial
Tensile strength (@thickness 4.80-25.4 mm, 538°C/@thickness 0.189-1.00 in, 1000°F)	601.2 MPa	87200 psi
Yield strength (0.2% offset, @thickness 2.40 mm, 427°C/@thickness 0.0945 in, 801°F)	204.8 MPa	29700 psi
Elastic modulus (RT)	205 GPa	29700 ksi
Elongation at break (in 50.8 mm, @thickness 1.60-4.70 mm, 204°C/@thickness 0.0630-0.185 in, 399°F)	56%	56%
Hardness, Rockwell B (plate)	87	87

The thermal properties of HASTELLOY(r) C276 are given in the following table

Properties	Metric	Imperial
Thermal expansion co-efficient (@24-93°C/75.2-199°F)	11.2 µm/m°C	6.22 µin/in°F
Thermal conductivity (-168 °C)	7.20 W/mK	50.0 BTU in/hr.ft².°F

The hastelloy alloy C276 / C22 Pipes and Tubes is used in the following applications:-

Chlorination systems
Flue gas scrubbers
Outlet ducting and stack liners for power plants, pulp and paper bleach plants, sulfur dioxide scrubbers, and weld overlay of less corrosion resistant metals
Acid production and pickling systems
Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion related failures
Cellophane manufacturing
Chlorination systems
Pesticide production
Incineration scrubber systems
Chemical process industry in equipment like flue gas scrubbers, chlorination systems, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
Waste water processing
Pollution control stack liners, ducts, dampers, scrubbers, stack-gas reheaters, fans and fan housings
Flue gas desulfurization systems
Chemical processing components like heat exchangers, reaction vessels, evaporators, and transfer piping
Sour gas wells
Pulp and paper production
Waste treatment
Pharmaceutical and food processing equipment