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Triton Alloys

Hastelloy C276 Round Bars

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.

In what forms is Hastelloy C276 Available

  • Bar
  • Sheet
  • Plate
  • Pipe & Tube (welded and seamless)
  • Pipe Fittings
  • Welding Wire

Corrosion Resistant Hastelloy C276 :

Considered one of the most versatile corrosion resistant alloys available, Hastelloy C-276 exhibits excellent resistance in a wide variety of chemical process environments including those with ferric and cupric chlorides, hot contaminated organic and inorganic media, chlorine, formic and acetic acids, acetic anhydride, seawater, brine and hypochlorite and chlorine dioxide solutions. In addition, alloy C-276 resists formation of grain boundary precipitates in the weld heat affected zone making it useful for most chemical processes in the as-welded condition. This alloy has excellent resistance to pitting and stress corrosion cracking.

What are the characteristics of Hastelloy C276?

  • 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

Specification

Range : 6 mm to 120 mm.
Material : Monel :
Grade: Monel 400, Monel K500, Monel R-405
Nickel :
Grade: Nickel 200, Nickel 201
Inconel :
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Incoloy :
Grade: Incoloy 800, Inconel 800H, 800HT
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Titanium :
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Stainless Steel :
Grade: ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 304H, 316H, 316/316L, 321, 330, 347, 309/S, 310/S, 317/L, 333, 410/S, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404
Carbon Steel :
Grade: ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70
Duplex Steel:
Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
Alloy Steel:
Grade : ASTM SA 182 - E25, E26, E27, E28, E29B, E30B, E39B, E40B, E36B, E36C, E41B, AISI4130, AISI4140, AISI4340, 42CRMO4, 16MNCR5, 20MNCR5, 21CrMoV57, EN353, EN354, F11, F22, F91, F9, P11, P22, P91, P9, P5, P92, EN42J, EN8, EN19
Standards : ASTM / ASME SB 574, ASTM / ASME SB 335, ASTM / ASME SB 572
Length : 2m - 6m
Finish : Bright, Polish & Black
Form : Round, Square, Hex (A/F), Bush, Rectangle.
Grade       Hastelloy C22 aRound Bars : ASTM B 575, ASME SB 575, UNS 6022 / Werkstoff Nr. 2.4617

Chemical Compositions :

Ni Mo Cr Fe W Co Mn C
Remainder 15.0-17.0 14.5-16.5 4.0-7.0 3.0-4.5 2.5 max 1.0 max .01 max
V P S Si        
.35 max .04 max .03 max .08 max        

In what applications is Hastelloy C-276 used?

  • 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.

Fabrication with Hastelloy C-276 :

Hastelloy C-276 alloy can be forged, hot-upset and impact extruded. Although the alloy tends to work-harden, you can have it successfully spun, deep-drawn, press formed or punched. All of the common methods of welding can be used, although the oxyacetylene and submerged arc processes are not recommended when the fabricated item is for use in corrosion service.

Hastelloy C-276 Welding Material :

Alloy C276 welding products are used as matching composition filler material for welding C276 alloy wrought and cast products, for dissimilar welding applications including other nickel-chromium-molybdenum alloys and stainless steels, and for weld overlay or cladding of steels.

Other Specifications :

ASME-SFA-5.14 ERNiCrMo-4 Forms of C276 Filler Metal Available...

  • Pollution-control equipment
  • .031 in or .8 mm in diameter
  • .035 in or .9 mm in diameter
  • .039 in or 1.0 mm in diameter
  • .045 in or 1.1 mm in diameter
  • .047 in or 1.2 mm in diameter
  • .062 in or 1.6 mm in diameter
  • .078 in or 2.0 mm in diameter
  • .093 in or 2.4 mm in diameter
  • .125 in or 3.2 mm in diameter

Filler metals are available in spools and in cut lengths from the above diameters. Straight lengths are available in 36" lengths.

ASTM Specifications :

Pipe Smls Pipe Welded Tube Smls Tube Welded Sheet/Plate Bar Forging Fitting Wire
B622 B619 B622 B626 B575 B574 B564 B366  

Mechanical Properties (Typical Room Temperature Tensile Properties of Annealed Material) :

Product Form Tensile (ksi) .2% Yield (ksi) Elongation %
Bar 110 52.6 62
Plate 107.4 50.3 67
Sheet 115.5 54.6 60
Tube & Pipe 105.4 45.4 70

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