Amigo Impex is a trusted Monel K500 bars and rods manufacturer and supplier in Mumbai, India, operating since 2013.
Monel K500 round bar is a precipitation-hardenable nickel-copper alloy product supplied to ASTM B865 under UNS N05500. Aluminium and titanium additions enable precipitation hardening during ageing. Ageing raises the minimum tensile strength to 965 MPa with 690 MPa minimum yield in the hot-worked and age-hardened condition, and to 1000 MPa tensile with 760 MPa yield in cold-worked and age-hardened rounds up to 25.4 mm. Annealed and age-hardened bar carries a minimum tensile strength of 895 MPa with a yield strength of 620 MPa up to 25.4 mm and 585 MPa above that. General corrosion resistance in seawater stays at the Monel 400 level, though the age-hardened material is more prone to stress-corrosion cracking. European drawings identify the same material as W.Nr. 2.4375.
We hold round bars from 3 mm to 300 mm in diameter, besides hex, flat, square and rectangular sections, with rods from 3 mm. Threading and fabrication run in-house alongside cutting and machining. Machine shops turn it into pump shafts, drill collars, valve trim and doctor blades for marine, oil and gas, chemical and paper plants. Exports move to the USA, the Gulf, Europe and Asia, priced per kg. AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018 certifications are held by our company, and a mill test certificate is included with every consignment.
Ordering Monel K500 bars and rods starts with the specification set below. It fixes the governing standard, profiles, production route, supply conditions, finish and documentation required for UNS N05500 bar.
ASTM B865 is the sole specification for which we manufacture this bar. Aerospace and defence documents are reference designations, and sheet specifications such as BS 3072 NA18 don't apply to bar.
| Standard | Scope (Bar / Rod Form) |
|---|---|
| ASTM B865 | Primary spec: Precipitation-hardening nickel-copper-aluminium alloy bar, rod, wire, forgings and forging stock, UNS N05500 |
| AMS 4676F | Aerospace hot-finished bars and forgings (reference) |
| QQ-N-286 | US federal bar, rod and forgings (reference) |
| BS 3076 NA18 | UK Ni-Cu-Al alloy bar |
| DIN 17752 | German nickel alloy rod and bar |
| NACE MR0175 / ISO 15156 | Sour-service conformance documentation |
Nickel and copper form the corrosion-resistant base of the Ni-Cu Alloy K500 chemistry, while aluminium and titanium enable age hardening. Composition limits for ASTM B865 UNS N05500 bar follow ASTM B865.
| Element | Value (%) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 27.0 - 33.0 |
| Aluminium (Al) | 2.30 - 3.15 |
| Iron (Fe) | 2.00 max |
| Manganese (Mn) | 1.50 max |
| Titanium (Ti) | 0.35 - 0.85 |
| Silicon (Si) | 0.50 max |
| Carbon (C) | 0.18 max |
| Sulphur (S) | 0.010 max |
Listed minimum mechanical properties of Monel K-500 bar under ASTM B865. Age hardening delivers the strength, though the hardened condition is more prone to stress-corrosion cracking than alloy 400; state the required condition at enquiry.
| Form | Condition | Maximum Section Thickness, in. (mm) | Tensile Strength, min, ksi (MPa) | Yield Strength, 0.2% offset, min, ksi (MPa) | Elongation in 2 in. or 4D, min, % | Hardness, Brinell 3000 kg, min | Hardness, Rockwell C, min |
|---|---|---|---|---|---|---|---|
| Rounds, hexagons, squares, rectangles, and forgings | Hot-worked and age-hardened | All sizes | 140 (965) | 100 (690) | 20.0 | 265 | 27 |
| Rounds | Cold-worked and age-hardened | ¼ (6.4) to 1 (25.4), incl | 145 (1000) | 110 (760) | 15.0 | 300 | 32 |
| Rounds | Cold-worked and age-hardened | over 1 (25.4) to 3 (76.2), incl | 140 (965) | 100 (690) | 17.0 | 280 | 29 |
| Rounds | Cold-worked and age-hardened | over 3 (76.2) to 4 (101.6), incl | 135 (930) | 95 (655) | 20.0 | 255 | 25 |
| Hexagons | Cold-worked and age-hardened | ¼ (6.4) to 2 (50.8), incl | 140 (965) | 100 (690) | 15.0 | 265 | 27 |
| Rounds, hexagons, squares, rectangles, and forgings | Annealed and age-hardened | Up to 1 (25.4) | 130 (895) | 90 (620) | 20.0 | 250 | 24 |
| Rounds, hexagons, squares, rectangles, and forgings | Annealed and age-hardened | 1 (25.4) and over | 130 (895) | 85 (585) | 20.0 | 250 | 24 |
Drawings raised in Europe, the UK or a defence programme name the same bar differently, but these aren't separate alloys. Each Monel K500 material equivalent below points to UNS N05500 chemistry.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | UNS N05500 |
| Europe (W.Nr.) | 2.4375 (NiCu30Al) |
As a Monel K500 bars and rods stockist, our stock covers the size bands below, built for shaft work from fine rods through to heavy sections.
| Parameter | Range |
|---|---|
| Round bar diameter | 3 mm - 300 mm |
| Polished / precision rod diameter | 3 mm - 70 mm |
| Fine rod diameter | from 3 mm |
| Standard length | 100 mm - 3,000 mm |
| Precision-ground tolerance | 0/+0.02 mm diameter; 0.025 mm max runout |
| Hex / flat / square / rectangular | Equivalent band; quoted per enquiry |
| Cut-to-size | Sawn in-house to ordered lengths |
5 Monel K500 rod and bar types cover most enquiries, including Monel K500 rod sizes for precision and component machining.
From our Mumbai stockyard, Monel K500 bars are shipped in bundles or wooden crates marked with grade, size, heat number and specification. Made-to-order material ships in around 30 days; urgent dispatches move in 1 to 2 days.
Amigo Impex tests every heat of Monel K500 bar in-house as the manufacturer: chemical analysis, tensile and hardness checks run before packing, recorded on each order's mill test certificate. Third-party inspection and NACE MR0175 / ISO 15156 documentation are arranged on request.
Monel K500 round bars are priced at approximately ₹1,800–₹2,200 per kg in India and US$20–US$50 per kg in international markets. Diameter, section, length, finish, condition, quantity, certification, and export requirements determine the final quotation. Domestic prices are quoted in INR per kg, while export orders are quoted in USD per kg.
Send section sizes and quantities to get a current Monel K500 price per kg.
Request a Quote60–70 tonnes held in Mumbai, with urgent requirements dispatched within one to two days.
AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018, with an MTC on every order.
Cutting, machining, threading, fabrication and testing all handled at our own Mumbai facility.
Original mill certificates plus our own test reports, so every batch can be traced back.
Non-standard sizes and specifications made to order.
Dispatched from Mumbai to every major Indian city, and exported to USA, Gulf, Europe, Asia
ASTM B865 is the standard Monel K500 bars and rods are supplied to. It covers precipitation-hardening Ni-Cu alloy rod, bar and forgings under UNS N05500.
Monel K500 round bars are priced at approximately ₹1,800–₹2,200 per kg in India and US$20–US$50 per kg in international markets. Diameter, finish, condition and quantity move the final figure.
Monel K500 bar contains 63.0% nickel minimum, 27.0-33.0% copper, 2.30-3.15% aluminium and 0.35-0.85% titanium per ASTM B865.
ASTM B865 sets minimums by form, size and condition. Annealed and age-hardened bar must reach 895 MPa (130 ksi) tensile with 620 MPa (90 ksi) yield and 20% elongation. Cold-worked and age-hardened rounds run up to 1000 MPa (145 ksi) tensile and 760 MPa (110 ksi) yield.
Yes, UNS N05500 is the Unified Numbering System designation for Monel K500. Alloy K-500, Nickel Alloy K500 and W.Nr. 2.4375 are alternate names; they're one nickel-copper-aluminium bar material.
Round bar from 3 mm to 300 mm diameter and rods from 3 mm are available, in lengths of 100 mm to 3,000 mm, cut in-house.
Round, hex, flat, square and rectangular shapes are stocked in Monel K500.
Nickel Alloy K500 bars and rods serve eight industries where strength and seawater resistance combine.
