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.

APPLICATIONS

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

Heat Treatment
Solution annealed at 1100 to 1160°C.

Weldability
Good.

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

Mechanical Properties

Yield strength
RP0.2, MPA
Tensile strength
RM, MPA
Elongation
[%]
Hardness
[HB]
Impact, Charpy-V, -196ºC
[J]
 ≥ 300  ≥ 700  ≥ 40  ≤ 240  357

ROUND BAR STOCK

DIA 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