Product Details

Alloy 400 Tubing is all called Monel 400, This nickel-copper chemistry features a high-intensity single-phase solid solution metallurgical structure. Alloy 400 has greater corrosion resistance than nickel under reducing conditions and is more resistant than copper under oxidizing conditions. This grade has been widely used in applications requiring strong resistance to corrosive environments featuring acids, alkalies, and high-temperature steam. It is all but immune to the stress corrosion cracking (SCC) induced by chlorides and most freshwater conditions. A very tough material (as measured by impact testing) Alloy 400 has excellent mechanical properties in sub-zero conditions. It does not undergo a ductile-to-brittle transformation even when cooled to the temperature of liquid hydrogen. On the opposite side of the temperature range, Alloy 400 performs well in temperatures up to 1000° F.

Product Specifications

- ASTM B163 /ASME SB163,ASTM B165, NACE MR0175

- Material: Hastelloy K-500, 400, etc.

- Products include: bar, plate, seamless tube, welded tube, flange, fitting

- Standard: ASTM B 164, B127, B906, B165, B829, B725, B775, B366, B564

FABRICATION

Monel 400 can be satisfactorily fabricated, welded, and joined by standard methodologies and rates of production. Usually, subsequent thermal treatment to effect the re-balancing of the alloy is not required. Contact PAC Stainless for detailed fabrication and welding information.

TYPICAL APPLICATIONS

Equipment in Sulfuric Acid Environments, Chemical Processing - Organic/Inorganic Chlorides, Sour Gas Well Environments, Pulp & Paper Production - Digesters & Bleach Plants, Waste Treatment - Evaporators, Pollution Control - Sulfur Compounds in Flue Gas

ALLOY 400 SEAMLESS NICKEL TUBING

High strength, good weldability, and excellent corrosion resistance over a wide range of temperatures and conditions.

Typical applications: valves, pumps, marine fixtures, feedwater heaters, heat exchangers, petroleum refining, and production equipment.

Stock Size Range:

- OD: 0.125" - 2.00"

- Wall: 0.028" - 0.072"

- Specifications: ASTM B163, ASME SB163, ASTM B165, ASME SB165

Monel 400 tubing (UNS N04400. W.Nr. 2.4360, 2.4361) is a part of the Monel family of alloys created by David H. Browne, chief metallurgist for International Nickel Co., patented in 1906 and named after then-president Ambrose Monel. An alloy of nickel-copper, roughly 67% nickel, it is known for its resistance to seawater corrosion, acids, and other corrosive media. Monel 400 tubing is corrosion resistant, which allows it to excel in marine applications: piping systems, pump shafts, seawater valves, etc. It is also found commonly in chemical plant equipment, crude oil distillation towers, boiler feeders, and heat exchangers. An alloy of nickel-copper, roughly 67% nickel, it is known for its resistance to seawater corrosion, acids, and other corrosive media.

Only hardened by cold working, Monel 400 tubing exhibits excellent weldability and high strength, in addition to its corrosion resistance. Although low in strength in the annealed condition, using a variety of tempers Monel 400 tubing has great mechanical properties at subzero temperatures, and can be used in temperatures up to 1000°F.

Monel 400 is an alloy of nickel and copper, commonly used in critical, high-performance applications. It exhibits high strength, excellent resistance to acids and alkalis, good ductility, and good thermal conductivity. Monel 400 is suitable for temperatures ranging from subzero to 1,000°F (538°C), and can only be hardened via cold-working.

As it contains the same quantities of nickel and copper content as the naturally-occurring nickel ore extracted from the Sudbury mines in Ontario, Canada, Monel 400 is considered a “puritan alloy.” This designation makes it unique among Monel alloys.

Monel 400 Tube Specifications

Monel 400 tubing meets a number of industrial, international, MIL-SPEC, and other specifications, including:

UNS N04400

ASTM B165

ASTM B829

ASTM B775

ASTM B725

ASTM B163

ASTM B730

ASTM B751

AMS 4574

DIN 17752