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Alloy C22 is an enhanced nickel-chromium-molybdenum-tungsten alloy designed for superior performance in aggressive industrial environments. This alloy offers exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking in both oxidizing and acid chloride conditions.
Key Features and Benefits
Superior overall corrosion resistance compared to Alloy C-276
Outstanding resistance to chloride pitting, crevice corrosion, and stress corrosion cracking
Excellent performance in oxidizing aqueous environments including wet chlorine and nitric acid/chloride ion mixtures
Enhanced weldability with Alloy C22 weld fillers used for joining other corrosion-resistant alloys
Exceptional resistance to seawater corrosion under both stagnant and flowing conditions
Material Composition
Hastelloy C22, UNS N06220 - Nickel-base alloy containing approximately 22% chromium, 14% molybdenum, and 3% tungsten with iron limited to less than 3%.
Element
Ni
Cr
Mo
Mn
Si
C
S
P
Cu
V
W
Fe
MIN
--
20.0
12.5
--
--
--
--
--
--
--
2.5
--
MAX
balance
22.5
14.5
0.5
0.08
0.015
0.02
0.02
2.5
0.35
3.5
6.0
Fabrication Guidelines
While ductile enough for cold working, intermediate annealing may be required due to work hardening. Forging should be performed between 1750-2050°F followed by rapid cooling. Annealing temperature range is 2020-2150°F with rapid quench to avoid detrimental phase formation between 1400-1800°F. Welding can be accomplished using gas tungsten-arc, gas metal-arc, and shielded metal-arc processes.
Mechanical Properties
Temperature (°F)
70
200
400
600
800
1000
1200
1400
Ultimate Tensile Strength (ksi)
114
107
98
95
92
88
83
76
0.2% Yield Strength (ksi)
54
49
41
36
35
34
32
31
Elongation (%)
62
65
66
68
68
67
69
68
Hardness MAX (HRB)
95
--
--
--
--
--
--
--
Industry Standards
Product Form
Standard
Pipe Seamless
B622
Pipe Welded
B619
Tube Seamless
B622
Tube Welded
B626
Sheet/Plate
B575
Bar
B574
Forging
B564
Fitting
B366
Industrial Applications
Pharmaceutical industry equipment to prevent contamination from corrosion-related failures
Cellophane manufacturing processes
Chlorination systems and equipment
Pesticide production facilities
Incineration scrubber systems
Chemical process industry equipment including flue gas scrubbers, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
Waste water processing systems
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
