MATERIAL DESCRIPTION

Alloy C-276 is a nickel-molybdenum-chromium alloy with additional tungsten. Alloy 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, 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 and oxidizing atmospheres up to 1040°C.

CHEMICAL COMPOSITION

WEIGHT% C SI MN CR NI MO W V CO S P FE
MIN.  14,50  15,00  3,00  4,00
MAX.  0,010  0,08  1,00  16,50  REST  17,00  4,50  0,35  2,50  0,030  0,040  7,00

Product Standards: ASTM B574, DIN 17752, ASTM B564

Approvals: NACE MR0175

APPLICATIONS

Usually used in chemical processing, pollution control, pulp and paper industry, waste treatment, dampers, scrubbers and heat exchangers.

Mechanical Properties

YIELD STRENGTH
RP0.2
MPA
TENSILE STRENGTH
RM
MPA
ELONGATION
[%]
HARDNESS
[HB]
IMPACT
CHARPY-V, -196ºC
[J]
 ≥ 300  ≥ 700  ≥ 40  ≤ 240  357

Heat Treatment

Solution annealed at 1100 to 1160°C

Weldability

Good.

ALLOY C-276 / UNS N10276 ROUND BAR

DESCRIPTION KG/M
25,4 mm 4.4
31,75 mm 6.9
38,1 mm 9.7
44,5 mm 12.5
50,8 mm 17.
69,85 mm 30.8
76,2 mm 38.7
101,6 mm 72.4
230 mm 334