Hastelloy Wire Mesh Engineering & Global Procurement Guide: Alloy Selection, Technical Standards & Direct Sourcing

The choice between Hastelloy C-276 (UNS N10276) and Hastelloy C-22 (UNS N06022) is determined by the oxidation-reduction potential (ORP) of your process stream. Hastelloy C-276 contains 15.0–17.0% molybdenum and 3.0–4.5% tungsten, providing exceptional resistance in reducing environments, mixed halogen acids (hydrochloric and hydrofluoric), wet chlorine gas, and severe chloride pit-initiating conditions. Hastelloy C-22 incorporates a significantly higher chromium content (20.0–22.5%) combined with 12.5–14.5% molybdenum. This composition delivers superior resistance to high-temperature oxidizing media, including concentrated nitric acid, ferric chloride solutions, and chlorine dioxide bleach streams in pulp and paper facilities. In severe cyclic services where processes alternate between reducing and oxidizing stages, C-22 offers the widest overall corrosion resistance margin.

Every shipment from Ambani Metals is supplied with an Inspection Certificate conforming strictly to EN 10204 Type 3.1. This certificate details heat-specific melt chemical composition from certified optical emission spectroscopy (OES), mechanical properties (ultimate tensile strength and elongation), and compliance with ASTM specifications (ASTM B574 for alloy rod/wire and ASTM E2016 / ISO 9044 for woven industrial wire cloth). Furthermore, our QA team performs 100% Positive Material Identification (PMI) via calibrated handheld XRF analyzers to eliminate counterfeit or adulterated raw materials. Dimensional aperture verification, wire diameter checks using calibrated micrometer optics, and bubble-point integrity reports (for micron-rated Dutch weaves) are standard inclusions.

While SS 316L and 904L are cost-effective for general industrial duties, they rapidly succumb to chloride stress corrosion cracking (CSCC) at process temperatures exceeding 60°C (140°F), as well as rapid pitting in the presence of acidic chlorides. Hastelloy alloys feature a nickel base (over 50%) that is thermodynamically resistant to chloride stress cracking across all concentration and temperature ranges. In addition, the Pitting Resistance Equivalent Number (PREN) of Hastelloy C-276 exceeds 68, compared to roughly 25 for SS 316L and 36 for 904L. Sourcing Hastelloy wire mesh prevents catastrophic filter element blowouts, extends turnaround intervals from months to multiple years, and significantly lowers the Total Cost of Ownership (TCO) in critical plant operations.

Ambani Metals weaves Hastelloy wire mesh in a comprehensive range of dimensions. For coarse sizing and structural support, we produce square mesh from 1 mesh (wire diameter 2.5mm, aperture 22.9mm) to 40 mesh. For fine filtration, our looms manufacture plain square weaves and twill square weaves up to 500 mesh (25-micron openings). For micro-filtration down to sub-sieve particles, we supply Plain Dutch Weave (e.g., 24×110 mesh for 80-micron nominal retention), Twilled Dutch Weave (e.g., 325×2300 mesh down to 2-micron absolute retention), and Reverse Dutch Weave for high-pressure continuous polymer extrusion screen changers. Custom widths up to 2000mm and slit coil strips as narrow as 15mm are regularly produced.

Yes. Hastelloy superalloys possess excellent workability and weldability when handled by experienced fabricators. Ambani Metals operates an integrated manufacturing facility equipped for multi-layer ultrasonic bonding, plasma and laser circular disc cutting, micro-resistance spot welding, longitudinal TIG seam welding, and high-speed stamping. We manufacture fully assembled Hastelloy filter cylinders, pleated filter elements with Hastelloy perforated cores, demister pads framed in Hastelloy flats, and multi-mesh rimmed extruder packs. Our strict inter-pass temperature control prevents the precipitation of detrimental secondary intermetallic phases such as mu-phase or grain boundary carbides.

We maintain ready warehouse inventory of popular Hastelloy C-276 and C-22 mesh counts (such as 20, 40, 60, 80, 100, and 200 mesh in standard 1m and 1.22m widths), enabling dispatch within 3 to 7 business days. Custom engineered weaving schedules and fabricated filter elements typically require 2 to 4 weeks production lead time. All rolls and fabricated parts are wrapped in protective heavy kraft paper, sealed in multi-layer vapor corrosion inhibiting (VCI) plastic film, and secured on rigid center cores to avoid deformation. Consignments are packed inside reinforced, fumigated ISPM-15 export timber boxes and dispatched via ocean container freight or direct air cargo (DHL/FedEx/Air Freight) to destinations across the United States, Australia, the United Kingdom, Germany, the UAE, and Saudi Arabia.