Monel 400 Round Bar

Monel 400 Round Bar, Monel 400 Bar & UNS N04400 Round Bar

Monel 400 Round Bar Supplier & Product Features

Monel 400 Round Bar stock earns its place in seawater piping, sour gas systems, and hydrofluoric acid units because the nickel-copper matrix resists pitting where straight nickel or straight copper alloys fail on their own. Goodluck Metal Corporation supplies this bar stock cut, tested, and packed to the tolerances a fabrication shop actually specifies.

The alloy runs 63 to 70 percent nickel and 28 to 34 percent copper, with iron, manganese, carbon, and silicon rounding out the balance. That copper-nickel ratio is what gives Monel 400 Bar its resistance to reducing acids and its stability in chloride-rich water, unlike alloys that depend on a thin passive chromium oxide film for protection. Once that film breaks down under chloride attack, a stainless bar corrodes fast. A Monel 400 Bar does not rely on that film in the first place.

Solid solution strengthening, not precipitation hardening, gives this alloy its working properties. Nickel and copper form a single continuous phase across the full composition range, so there is no secondary phase to age or coarsen in service. Cold drawing raises tensile strength directly through grain deformation, and this mechanism is why Monel 400 Round Bars hold their strength under stress corrosion cracking conditions where austenitic stainless steel bars crack within months.

Annealed Monel 400 Round Bar Stock meets ASTM B164 with a minimum tensile strength of 483 MPa (70,000 psi), minimum yield of 195 MPa (28,000 psi), and 30 percent minimum elongation. Cold worked bar exceeds these figures, trading elongation for higher yield strength, which is a useful option when a shop needs a stiffer shaft or pin without switching alloys. Weld procedures using matching ERNiCu-7 filler carry the same corrosion resistance into the heat-affected zone, a factor that matters on flanges, valve stems, and pump shafts machined from this bar.

The alloy stays serviceable from cryogenic temperatures down to -196°C up to roughly 480°C in non-oxidizing environments, and it is non-magnetic, which is why instrument makers specify Monel 400 Round Bars for housings and components near sensitive magnetic equipment. Machinability sits below free-cutting brass, so shops running high-volume turned parts often request the R-405 free-machining variant rather than standard bar stock.

Goodluck Metal Corporation runs each production batch through mechanical testing, positive material identification, and non-destructive inspection before dispatch. Every heat of Monel 400 Round Bars carries a mill test certificate cross-referenced against UNS N04400 chemistry limits, so a buyer can verify composition and mechanical data before the bar reaches the shop floor. Surface finish runs from hot rolled black bar through peeled and cold drawn bright bar, depending on what the downstream machining operation requires.

Working with a UNS N04400 Round Bar Supplier that holds live inventory cuts lead time on urgent replacement orders, especially for offshore platforms where a delayed valve stem stops a maintenance window. As a Monel 400 Round Bar Supplier, we hold sizes from 6mm to 200mm diameter in Monel 400 Round Bar Stock, covering the specification calls that come up most often in offshore, marine, and chemical processing work.

Fastener manufacturers, pump builders, and marine hardware shops pull Monel 400 Round Bar Stock for one reason: it covers freshwater, seawater, and mild acid exposure without a coating that can chip or a liner that can fail at a weld seam. Feedwater heater supports, propeller shafts, and valve trim are common end uses of Monel 400 Round Bars.

Buyers sourcing from a Monel 400 Round Bar Supplier should ask for heat treatment condition, straightness tolerance, and surface finish in writing before confirming an order, since these three variables affect machining time more than alloy choice does. A UNS N04400 Round Bar Supplier working to ASTM, ASME SB164, and NACE MR0175 requirements gives a documented basis for sour service qualification. Our Monel 400 Round Bar Stock ships with full documentation for exactly this reason.

Bars are wrapped, banded, and tagged by heat number before leaving the warehouse, and export orders are shipped on the fastest available freight route to meet agreed delivery windows. Request a mill certificate and current stock list before placing your next order.

Monel 400 Round Bar

(Monel 400 Round Bar, Monel 400 Bar & UNS N04400 Round Bar)

Goodluck Metal Corporation supplies Monel 400 round bars as solid UNS N04400 stock for marine, chemical, and process equipment. The alloy combines nickel and copper with iron, manganese, and silicon and resists seawater, hydrofluoric acid, and alkaline solutions without losing strength. Diameters range from 0.1 mm to 100 mm, and lengths from 100 mm to 3000 mm and above, made to ASTM B164 and ASME SB164. Cold working raises hardness, since this grade does not respond to heat treatment. Fabricators use these bars for shafts, valve stems, fasteners, and pump components.

Goodluck Metal Corporation, based in Mumbai, has supplied nickel alloys and stainless steel products for over 50 years.

Monel 400 Round Bar Overview

(Monel 400 Round Bar Supplier & Product Features)

Monel 400 is a nickel-copper alloy identified under UNS N04400, supplied by Goodluck Metal as Monel 400 round bars and rod stock manufactured to ASTM B164 and ASME SB164. Monel 400 contains a minimum of 63% nickel and approximately 28–34% copper, giving the alloy strong resistance to seawater, chloride-rich environments, and several corrosive chemical media. Bars are available in sizes from 5 mm to 500 mm, diameters between 0.1 mm and 100 mm, and in finishes from black to bright polished. Product specifications and mill test reports are available through the technical info section on request.

As an UNS N04400 round bar supplier, Goodluck Metal produces these six forms against the same chemical composition and mechanical property requirements, with matching bars available through the Monel pipes and tubes range for connected piping work.