ASTM B366, B574, B575, B619, B622

Hastelloy C276 / N10276 / DIN2.4819

 

Description:

Other common names: Alloy C276, Hastelloy C, Inconel C-276

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.

 

Features

. Excellent corrosion resistance in reducing environments

. Exceptional resistance to strong solutions of oxidizing salts, such as ferric and cupric chlorides

. High nickel and molybdenum contents providing good corrosion resistance in reducing environments

. Low carbon content which minimizes grain-boundary carbide precipitation during welding to maintain resistance to corrosion in heat-affected zones of welded joints

. Resistance to localized corrosion such as pitting and stress-corrosion cracking

. One of few materials to withstand the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide

Chemical composition,%

 

Ni	Cr	Mo	Fe	W	Co	C	Mn	Si	V	P	S
remainder	14.5-16.5	15.0-17.0	4-7	3.0-4.5	2.5 Max	0.01 Max	1.0 Max	0.08 Max	0.35 Max	0.04 Max	0.03 Max

 

 

Physical Properties

 

Density	8.9gcm3
Melting point	1325-1370oC

 

 

Mechanical Properties in the roomtemperature

 

Tensile strength Mpa	Yield strength Mpa	Elongation %
≥690	≥283	≥40

 

 

 

Forms of Hastelloy C276:

. Sheet

. Plate

. Pipe & Tube (welded and seamless)

. Wire

. Fittings

. Fastener