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Exotic alloy mesh is woven, knitted or sintered wire mesh made from corrosion- and temperature-resistant alloys — duplex and super duplex, commercially pure nickel, and the nickel-chromium and nickel-molybdenum grades sold as Inconel, Hastelloy, Monel and Alloy 20 — used where 304 or 316L will not survive the medium. Mechanically it does the same job as stainless mesh: it screens, filters or supports through aperture and wire geometry. What changes is the metallurgy behind the wire. Each alloy resists a specific form of attack — chlorides, sour gas, reducing or oxidising acids, caustic, or sustained heat — and none of them resists all of it. Exotic alloy mesh keeps working only as long as the alloy matches the medium, the concentration and the temperature actually present at the wire surface; a grade picked for the wrong attack can fail faster than the 316L it replaced.
Also known as: Hastelloy mesh · Inconel wire mesh · nickel alloy mesh · duplex stainless mesh · titanium wire mesh · corrosion resistant wire mesh · high temperature wire mesh
The element lasted a year. The replacement lasted six months. The one after that lasted four. Nothing changed on the datasheet, but the chloride level crept up, or the temperature did, and a grade that was correct at commissioning quietly stopped being correct. Ordering the same specification again buys another four months. The real question is not which mesh is finest — it is which metal survives what is actually flowing past it.
We supply mesh in corrosion- and temperature-resistant alloys. Duplex and Nickel 200/201 are the grades we lead with. Inconel, Hastelloy, Monel, Alloy 20 and titanium are sourced per project, with position and lead time confirmed at quotation. Send the medium, its concentration, the operating and design temperature, and whether the service is sour. The alloy follows from that; the weave follows from the separation you need; the wire diameter follows from the weave. In that order, or the specification is a guess with a price on it.
Mesh in an exotic alloy is a mill-run item. The wire is drawn from a specific heat, the loom is set for that wire, and the setup costs the same whether you take two square metres or thirty. So quantity is part of the engineering, not an afterthought: a small trial piece can cost per square metre what a full roll costs in total, and the clock is usually set by the wire draw rather than by the weaving. Tell us the annual requirement alongside the immediate one. It often changes the answer, and it always changes the price.
| Property | Value |
|---|---|
| Duplex 2205 and Nickel 200/201 supplied; super duplex 2507, Inconel, Hastelloy, Monel, Alloy 20 and titanium on enquiry | |
| woven (plain, twill, plain Dutch, twill Dutch, five-heddle), knitted, sintered laminate | |
| roughly 25 µm to 10 mm as a general woven-mesh range; in these alloys the fine end is narrower — confirmed per application | |
| 0.05–2.0 mm as a general woven-mesh range; the finest diameters are not drawn in every alloy | |
| 1000 and 1200 mm are the common commercial widths; wider is possible in selected weaves and alloys — confirmed at quotation | |
| rolls, cut panels, discs, rings and shaped blanks; edged or framed on request | |
| duplex ~250–300 °C max, code-dependent; Nickel 201 above ~300–315 °C; nickel-chromium grades far higher — the atmosphere decides | |
| mill-run item: a minimum length applies per alloy, wire and weave — confirmed at quotation | |
| alloys beyond duplex and nickel are sourced per project; position and lead time confirmed at quotation |
Values shown are standard industry ranges for wire mesh in corrosion- and temperature-resistant alloys, not a commitment. Which alloy, weave, aperture, wire diameter and working width are actually obtainable — and in what minimum quantity — is confirmed per application after technical review of your process data. Not every combination exists in every alloy.
Most RFQs name a metal when they mean a problem. "Hastelloy" alone does not specify anything: C-276 handles mixed oxidising and reducing conditions with chlorides, while the B grades are made for reducing acids and are ruined by oxidisers and ferric ions. Send medium, concentration, pH, chloride content, H2S and temperature. Name the alloy too if your specification fixes it — but the medium is what we can actually engineer against.
Duplex is a corrosion alloy, not a heat alloy: continuous service stops at roughly 250–300 °C depending on the design code, because of 475 °C embrittlement and sigma phase. Nickel 200 gives way to the low-carbon Nickel 201 around 300–315 °C, where the carbon begins to graphitise; specifications differ on which figure they draw the line at. Above that you are in nickel-chromium territory, where the atmosphere — oxidising, reducing, carburising, sulphidising — decides more than the number on the thermometer does.
State what has to be retained and at what flow, not the mesh count you had last time. Aperture follows from count and wire diameter together, and in these alloys the fine end is narrower than in stainless: work-hardening grades do not draw as fine, which limits how tight a twill Dutch weave can be woven. Where woven mesh runs out, a sintered laminate or a knitted structure usually takes over. Fine ratings are confirmed per application.
Give us the piece you need now and the volume you expect over a year, plus the format — roll, panel, disc, ring, or a finished element. Width matters more than it does in stainless, because nesting your parts into the available working width is often the difference between one mill run and two. A single trial disc is possible; it is simply priced as what it is.
Duplex 2205 and commercially pure nickel — Nickel 200, and the low-carbon Nickel 201 for service above roughly 300–315 °C — are the grades we lead with. Super duplex 2507, Inconel 600 and 625, Hastelloy C-276 and the B grades, Monel 400, Alloy 20 and titanium are sourced per project rather than held as a standing programme: not every alloy exists in every weave, wire diameter and working width, so availability and lead time are confirmed at quotation. An EN 10204 3.1 inspection certificate traceable to the heat number is available on request — ask in the RFQ, not after delivery. And 304 or 316L is still the right answer more often than an exotic-alloy enquiry assumes. Where they hold, we say so.
Most exotic-alloy enquiries start with a failure rather than a calculation, and the first replacement instinct is to jump to the most expensive metal on the list. Send the medium, concentration, temperature and chloride content. Sometimes the answer is duplex at a fraction of the cost, sometimes it is a heavier wire in the same grade, and sometimes it really is a nickel-molybdenum alloy. We would rather tell you 316L holds than sell you something that outlives the plant.
They are not interchangeable. C-276 is the general-purpose choice: molybdenum and chromium together give it resistance to both oxidising and reducing conditions, including chlorides. The B grades carry more molybdenum and only about 1 % chromium — too little to protect in oxidising service — so they excel in hydrochloric and other reducing acids but are attacked by oxidisers and ferric or cupric ions. If your specification does not fix the grade, describe the medium and let the grade follow.
Lower than most people expect. Duplex is chosen for chloride resistance and strength, not for heat: continuous service is generally held to roughly 250–300 °C depending on the design code. Two separate mechanisms wait above that. 475 °C embrittlement works in roughly the 300–525 °C window; sigma-phase formation in roughly 600–1000 °C. Neither is undone by cooling back down — the ferrite loses toughness and keeps the loss. Above the window the choice moves to austenitic stainless or to a nickel alloy.
Because it is a mill-run item. The wire is drawn from a specific heat and the loom is set up for that wire and that weave, and neither cost scales down with your order. Two square metres can therefore approach the price of a full roll. It is not a mark-up on small orders; it is the setup you are paying for either way. Bundling a year's requirement into one run is usually the cheapest fix.
The limit sits in the wire, not in the loom. These alloys work-harden as they are drawn, so the finest diameters routinely available in stainless are not available across the board, and the tightest Dutch weaves become difficult. As a practical range, expect the fine end of the programme to be narrower than in 316L; the exact rating obtainable in your alloy is confirmed per application.
Yes — cut, edged, formed, welded or framed as one scope, so the mesh arrives as the part rather than as material plus a job for someone else. One thing to plan for: in these alloys the offcut is a real cost. Send the drawing or a DXF early and the nesting is worked out before anything is cut.
An EN 10204 3.1 inspection certificate traceable to the heat number is available on request, and positive material identification can be arranged where your specification requires it. Both need to be stated in the RFQ. Attaching documentation to material that has already shipped is considerably harder than ordering it with the material.
Say so explicitly and quote the standard your specification works to — usually NACE MR0175 / ISO 15156 — together with the H2S partial pressure, chloride content and temperature. It matters because those requirements limit hardness and material condition, and drawn wire is hard by nature. Raised at RFQ stage it shapes the alloy and the condition; raised afterwards it can invalidate a mesh that is otherwise perfect.
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