Nickel Alloy Fasteners

Monel K500 bolts are comprised of a nickel alloy that combines the outstanding corrosion resistance of Monel 400 with increased strength and hardness.

Monel K500 nuts are a result of an age hardening process where aluminum and titanium are added to the nickel-copper base and then precipitated throughout the matrix.

Monel K500 nuts will retain their strength to 1200¡ãF and even retain their ductility as low as -400¡ãF.

Monel K500 bolts offer a unique combination of high strength with similar corrosion resistance to Monel 400 and improved resistance to a sour-gas environments.

Stronger than 400, alloy K500 washer even retains this strength in corrosive. conditions, resisting both pure and salt water, as well as non-oxidizing mineral acids, salts, alkalis, and sour gas.

It has high strength and excellent corrosion resistance in various acidic and alkaline environments, especially suitable for reducing conditions. It also has good ductility and thermal conductivity.

Alloy 400 is a solid solution alloy that can only be hardened by cold working.

The Monel 400 alloy is also known as super alloy monel. This alloy is available in some standard shapes such as hexagon, round, tube, pipe, plate, strip, sheet and wire.

INCONEL alloy C-276 is designated as UNS N10276 and Werkstoff Nr. 2.4819. It is listed in NACE MR0175 for oil and gas service.

Hastelloy C-276 also has exceptional resistance to pitting, stress-corrosion cracking and oxidizing atmospheres, as well as excellent resistance to multiple different chemical environments.

The high molybdenum content of Hastelloy?* C276 provides the alloy with its excellent resistance to pitting and crevice corrosion.

Hastelloy C-276 is a nickel-molybdenum-chromium alloy with excellent corrosion resistance in severe environments.

The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media.

Although there are several variations of the Hastelloy nickel alloy, Hastelloy C-276 is by far the most widely used.

INCONEL alloy C-276 (UNS N10276/W.Nr. 2.4819) is known for its corrosion resistance in a wide range of aggressive media.

The high molybdenum content imparts resistance to localized corrosion such as pitting.

The low carbon minimizes carbide precipitation during welding to maintain resistance to intergranular attack in heat-affected zones of welded joints.

It is used in chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment and the recovery of ¡°sour¡± natural gas.

Applications in air pollution control include stack liners, ducts, dampers, scrubbers, stack-gas re-heaters, fans and fan housings.

In chemical processing, the alloy is used for components including heat exchangers, reaction vessels, evaporators and transfer piping.

INCONEL C-276 alloy has excellent resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides, hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions.

It is used in flue gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encounted in most scrubbers.

C-276 alloy has excellent resistance to pitting and to stress-corrosion cracking. It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

The nickel content also provides excellent resistance to alkaline solutions.

Because of its versatility, and because it is the standard engineering material for applications which require resistance to corrosion and heat, a number of different critical industries use Nickel Alloy 600 in their applications. It is an superior choice for Nuclear reactor vessels and heat exchanger tubing and Chemical processing equipment. Alloy 600 can be provided in the lower strength, annealed condition, or strengthened through the pilger process.

Stress-relieving is performed after cold working to reduce residual stress and prevent distortion. Annealing is performed at 1700¡ãF – 1900¡ãF (927¡ãC – 1038¡ãC) to restore full softness.

Inconel 600 is a nickel-chromium alloy with good oxidation resistance at higher temperatures, with good resistance in carburizing and chloride containing environments.

Alloy 600 has good hot and cold workability in the annealed condition. Hot-working should be done above 1600¡ãF (871¡ãC) to ensure adequate ductility, while cold work should be performed below 1200¡ãF (649¡ãC).

The nickel content gives it excellent resistance to chloride-ion stress-corrosion cracking and also provides excellent resistance to alkaline solutions.

In strong oxidizing solutions like hot, concentrated nitric acid, 600 has poor resistance.