Materials

Nickel Alloys

HASTELLOY® C2762.4819 – UNS N10276 – NiMo16Cr15W

Hastelloy C-276® alloy is a nickel-molybdenum-chromium wrought alloy that is generally considered a versatile corrosion-resistant alloy. This alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. C-276 alloy has excellent resistance to localized corrosion and to both oxidizing and reducing media. Because of its versatility, C-276 alloy can be used where upset conditions are likely to occur or in multipurpose plants.

ACEQUISA HASTELLOY C276 N10276 2.4819 EN

Products

HASTELLOY® C276
		Availability
	Seamless Tubes
	Welded Tubes
	Plates
	Bars
	Flanges
	Fittings

Applications

Fuel & Gas desulphurisation systems
Organic syntheses involving acid chloride catalysts
Sulphuric acid coolers
Vinyl chloride monomer production

General characteristics

Hastelloy® C-276 alloy has excellent resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides,
hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions.
It is used in fuel gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encountered in
most scrubbers. C-276 alloy has excellent resistance to pitting and to stress-corrosion cracking.

Technical information

Specifications

C276 – UNS N10276
Product	Norm ASTM
Seamless Tubes	B-622
Welded Tubes	B-619 B-626
Plates	B-575
Bars	B-574
Flanges	B-564
Fittings	B-366

Chemical specifications %

C276 – UNS N10276
Element	Simbol	Maximum
Carbon	C	0,01
Manganese	Mn	1,00
Phosphorus	P	0,04
Sulfur	S	0,03
Silicon	Si	0,08
Nickel	Ni	57,0
Chrome	Cr	14,5-16,5
Molybdenum	Mo	15,0-17,0
Cobalt	Co	2,50
Tungsten	W	3,0-4,5
Iron	Fe	4,0-7,0
Vanadium	V	0,35

Mechanical Properties

C276 – UNS N10276
Norm	Rm min.	Rp 0,2% min.	E4d min.%	Z min.%	T.I.(J)	HR B	HB
B-564	100 (690)	41 (283)	40
B-574	100 (690)	41 (283)	40
B-575	100 (690)	41 (283)	40			100
B-619	100 (690)	41 (283)	40
B-622	100 (690)	41 (283)	40
B-626	100 (690)	41 (283)	40