Cromonimet Steel Limited

Hastelloy C22, also known as alloy C22, is a versatile austenitic nickel-chromium-molybdenum-tungsten alloy with enhanced resistance to pitting, crevice corrosion and stress corrosion cracking. The high chromium content provides good resistance to oxidizing media while the molybdenum and tungsten content give good resistance to reducing media. This nickel steel alloy also has excellent resistance to oxidizing aqueous media including wet chlorine and mixtures containing nitric acid or oxidizing acids with chlorine ions. Other corrosives Hastelloy C-22 has resistance to are oxidizing acid chlorides, wet chlorine, formic and acetic acids, ferric and cupric chlorides, sea water, brine and many mixed or contaminated chemical solutions, both organic and inorganic. This nickel alloy also offers optimum resistance to environments where reducing and oxidizing conditions are encountered in process streams. This is beneficial in multi- purpose plants where such “upset” conditions occur frequently.

This nickel 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.

Alloy C-22 should not be used in service temperatures above 1250° F due to the formation of detrimental phases which form above this temperature.

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
• Wire

• 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

Although ductile enough to be formed by cold working, intermediate annealing may be necessary due to work hardening. Forging should be performed between 1750-2050° F followed by rapid cooling. Annealing can be performed at a temperature range between 2020-2150° F followed by a rapid quench. Cooling at an accelerated rate avoids the formation of detrimental phases which form between 1400-1800° F. Welding can be done by gas tungsten-arc, gas metal-arc and shielded metal-arc processes.

ASTM Specifications

Typical Room Temperature Tensile Properties of Annealed Material

Product Description:

• Standards: ASTM / ASME SB 336 & XXS
• Grades: UNS 10276 ( HASTELLOY C 276 )

Types: 
Bend (Long & Short)
Elbow (180 Deg., 90 Deg. & 45 Deg.)
Tee (Equal & Unequal)
Reducer (Concentric & Eccentric)
CAP, Stubend (Long &Short)
Nipple (Barrel)

 
Standard:            
Hastelloy Elbows       
Hastelloy Long Radius Elbow       
Hastelloy Short Radius Elbow       
Hastelloy 90 Deg Elbow       
Hastelloy 45 Deg Elbow       
Hastelloy 180 Deg Elbow       
Hastelloy Tee       
Hastelloy Equal Tee       
Hastelloy Reducing Tee       
Hastelloy Reducer       
Hastelloy Concentric Reducer       
Hastelloy Eccentric Reducer       
Hastelloy End Cap       
Hastelloy Cap       
Hastelloy Stubend       
Hastelloy Long Stubend       
Hastelloy Short Stubend       
Hastelloy Nipple       
Hastelloy Swage Nipple       
Hastelloy Barrel Nipple       
Hastelloy Reducing Nipple       
Hastelloy Bend       
Hastelloy Long Radius Bend       
Hastelloy Short Radius Bend 

 

Product Details:

• Standards: ASTM / ASME SB 336 & XXS
• Grades: UNS 10276 ( HASTELLOY C 276 )

• Compact design
• Robust construction
• Durability

• ½” (15 NB) to 48” (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6, 10, 16, 25, 40, 64, 100, 160 ETC.

• Slip On - SORF, Weld Neck - WNRF, Socket Weld - SWRF
• BLIND - BLRF, Lapped Joint, Screwed, Long Weld Neck, Reducing, Spectacle, Ring Joint, Drawing.

• ASTM
• BS.
• DIN.
• IS.

• Plate.
• Plate Blank.

Alloy C22 is an improved alloy for use in a range of aggressive industrial environments. Alloy C22 has excellent resistance to pitting and crevice corrosion in oxidizing and acid chloride environments, and is practically immune to chloride stress corrosion cracking (SCC). Alloy C22 has superior weldability, and alloy C22 weld fillers are used to join other corrosion resistant alloys such as Alloy C-276.

C22 Forged Billet, C22 Plate, C22 Sheet, C22 Weld Wire

• Better overall corrosion resistance than Alloy C-276
• Outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking
• Excellent resistance to oxidizing aqueous environments (wet chlorine and mixtures containing nitric acid and chloride ions)

• Stack liners
• Ducts
• Dampers
• Scrubbers
• Heat exchangers
• Reaction vessels
• Evaporators