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Alloy C276 Tubing

Alloy C276 is a nickel-molybdenum-chromium-tungsten superalloy, showing excellent resistance to mechanical and chemical degradation. The high nickel and molybdenum content impart remarkable corrosion resistance in reducing environments while chromium provides the same in an oxidizing media. Molybdenum also provides strong resistance to crevice corrosion and pitting. This alloy gives an excellent performance in a wide range of chemical processing conditions, often where nothing else works. Target applications include those involving strong oxidizers such as ferric and cupric chlorides and hot contaminated media (organic and inorganic), formic acid, seawater and brine solutions.

Product Specifications
ASTM B622 , B829/ASME SB622, SB829 NACE MR0175

ALLOY 825 (UNS N08825) CHEMICAL COMPOSITION % (MAX.)
Cr
Chromium
Ni
Nickel
C
Carbon
Mo
Molybdenum
Mn
Manganese
Si
Silicon
Ph
Phosphorus
S
Sulfur
Fe
Iron
Co
Cobalt
W
Tungsten
V
Vanadium
14.5-16.5 57.0 (min) 0.01 15.0-17.0 1.0 0.08 0.04 0.03 4.0-7.0 2.5 3.5-4.0 0.35

DIMENSIONAL TOLERANCES
OUTSIDE DIAMETER (OD) OD TOLERANCE WALL TOLERANCE
1/4” Tubes +.004”/-.005” +/- 12.5%
3/8” Tubes +.004”/-.004” +/- 12.5%
1/2” Tubes +.005”/-.008” +/- 15%
FABRICATION
Detailed fabrication and welding process information is available upon request.
TYPICAL APPLICATIONS
Equipment in Sulfuric Acid Environments, Chemical Processing, Organic/Inorganic Chlorides, Sour Gas Well Environments, Pulp & Paper Productions,  Digesters, Bleach Plants,  Waste Treatment,  Evaporators, Pollution Control - Sulfur Compounds in Flue Gas
 
SIZE RANGE
Outside Diameter (OD) Wall Thickness
1/4” - 1/2” .035” - .065”
Cold Finished and Bright Annealed Tube
MECHANICAL PROPERTIES
YIELD STRENGTH 0.2% Offset 41 KSI min.
TENSILE STRENGTH (MINIMUM KSI) 100 KSI min.
ELONGATION (MINIMUM 2 INCHES) 40%

 Alloy C276 Tubing
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