Features

ASTM B626 Welded Nickel-Cobalt (Hastelloy C22 & C276) Alloy Tube

Grades: UNS N10001, UNS N10655, UNS N10675, UNS N10276, UNS N06022, UNS N06455, UNS N06200, UNS N06210, UNS R30556, UNS R20033

Hastelloy C22, Hastelloy C276 Chemical Composition (wt. %)

Element	UNS N10001	UNS N10675	UNS N10276	UNS N06022	UNS N06455	UNS N06200	UNS N06210	UNS R30556	UNS R20033
Ni	Remainder	Remainder	Remainder	Remainder	Remainder	Remainder	Remainder	Remainder	Remainder
Cr	1.0 max	–	14.5-16.5	20.0-22.5	14.0-18.0	19.0-21.0	19.0-23.0	17.0-20.0	18.0-20.0
Mo	26.0-30.0	27.0-32.0	15.0-17.0	12.5-14.5	15.0-17.0	2.5-3.5	24.0-26.0	15.0-17.0	1.5 max
Fe	4.0-6.0	4.0-6.0	4.0-7.0	2.0-6.0	2.0 max	3.0 max	2.0 max	18.0-21.0	17.0-20.0
W	–	–	3.0-4.5	2.5-3.5	–	–	–	1.0-3.0	–
Co	–	–	2.5 max	2.0 max	–	–	–	1.0 max	–
C	0.05 max	0.01 max	0.01 max	0.015 max	0.05 max	0.01 max	0.015 max	0.05 max	0.03 max
Si	1.0 max	1.0 max	0.08 max	0.08 max	1.0 max	0.08 max	0.50 max	0.75 max	0.75 max
Mn	1.0 max	1.0 max	1.0 max	0.50 max	1.0 max	0.35 max	0.25 max	1.0 max	1.0 max
Others	Specified in individual standards

Hastelloy C22 & C276 Welded Tube Mechanical Properties

Property	UNS N10001	UNS N10675	UNS N10276	UNS N06022	UNS N06455	UNS N06200	UNS N06210	UNS R30556	UNS R20033
Tensile Strength (ksi)	100	110	100	100	100	100	100	100	100
Yield Strength (0.2% Offset, ksi)	45	51	41	45	40	45	45	45	45
Elongation (%)	40	40	40	45	40	45	45	40	40

Technical Specifications

Specification	Value
Standard	ASTM B626 Welded Nickel and Nickel-Cobalt Alloy Tube
Grade	UNS Nos. N10001, N10242, N10665, N12160, N10629, N10624, N10675, N10276, N06455, N06007, N06975, N08320, N06985, N06002, N06022, N06030, N06035, N06058, N06059, N06200, N06210, N08031, R30556, N06230, N06686, and R20033
Manufacturing Process	Automatic welding
Seam Type	Welded
Tube Size	Outside Diameter (OD) Range: 12.7-127mm, Wall Thickness (WT) Range: 1.2-12.7mm
Length	6000-12000mm
Delivery Condition	Solution-annealed
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Test	Chemical analysis, Tensile test, Flattening test, Expansion test, Hydrostatic test, Nondestructive testing (NDT), Intergranular corrosion test, Metallographic examination

Packing

Packed in plywood boxes or on pallets, or loosely packed.

Application

Chemical Processing: Nickel and nickel-cobalt alloys are known for their excellent resistance to various chemicals. Tubes made according to ASTM B626 are often used in chemical processing plants for piping systems, heat exchangers, and reactors, where they encounter aggressive substances like acids, bases, and solvents.
Oil and Gas: These tubes are used in environments prone to corrosion, such as seawater and sour gas conditions, in the oil and gas industry. They suit hydraulic tubing and safety-critical systems in offshore platforms and refineries.
Power Generation: Nickel alloy tubes are crucial in power plants, especially in high-temperature environments. They are used in steam generators, superheaters, and other components where metals must withstand high temperatures and corrosive gases.
Aerospace: The aerospace industry uses ASTM B626 welded tubes in aircraft and spacecraft for systems that require materials with high strength-to-weight ratios and resistance to high-temperature oxidizing environments.
Marine Engineering: Saltwater makes the marine environment highly corrosive. Nickel alloy tubes are used in shipbuilding and marine equipment because they are corrosion-resistant and strong.
Heat Exchangers and Condensers: These tubes are ideal for heat exchangers and condensers because they can tolerate high temperatures and corrosive environments, which are common in many industrial processes.