Manufactured using hot-forging, cold-heading, and high-precision CNC multi-axis tooling from vacuum-induction melted (VIM-ESR) raw materials.
A nickel-iron-chromium austenitic alloy stabilized with titanium, fortified by molybdenum and copper additions to conquer reducing acids and aggressive localized corrosion.
| Element / Property | UNS N08825 (Incoloy 825) | Technical Function in Mining & Acid Leaching |
|---|---|---|
| Nickel (Ni) | 38.0% – 46.0% | Provides absolute resistance against chloride-ion stress-corrosion cracking (SCC). |
| Chromium (Cr) | 19.5% – 23.5% | Confers passivity and resistance to oxidizing media (nitric acid solutions, nitrates, salts). |
| Iron (Fe) | Balance (≥ 22.0%) | Maintains structural stability while significantly reducing exotic alloying cost. |
| Molybdenum (Mo) | 2.5% – 3.5% | Counteracts pitting and crevice corrosion attack in brines and high-chloride runoffs. |
| Copper (Cu) | 1.5% – 3.0% | Critical resistance enhancement against sulfuric acid (H₂SO₄) across all concentrations. |
| Titanium (Ti) | 0.6% – 1.2% | Stabilizes against sensitization, preserving intergranular corrosion resistance post-forging. |
| Yield Strength / Tensile | ≥ 240 MPa / ≥ 586 MPa | Ensures high-load structural clamp force retention in high-vibration autoclave flanges. |
From the arid, high-altitude Atacama copper belts to the corrosive Pacific littoral processing plants, our fasteners withstand severe mechanical and chemical stress.
Installed across solvent extraction and electrowinning circuits in Antofagasta and Calama. Incoloy 825 stud bolts secure acid transfer pumps, heat exchangers, and pregnant leach solution (PLS) manifolds against aggressive sulfuric acid and organic kerosene extractants.
Critical bolting for reverse osmosis high-pressure manifolds delivering Pacific ocean water to mines 3,000 meters above sea level. Resists localized crevice corrosion and pitting under heavy salinity, marine bio-fouling, and abrasive desert mineral particulates.
Exposed to saturated chloride brines, magnesium salts, and elevated processing temperatures. Fasteners manufactured from UNS N08825 eliminate stress corrosion cracking risks where standard 304 or 316 series fasteners experience catastrophic intergranular embrittlement.
Chile's stringent environmental regulations and shift toward deeper, more complex mineral ores are accelerating the adoption of premium nickel-chromium superalloys.
Mining operations are mandated to eliminate continental groundwater usage, adopting raw untreated seawater directly into grinding and flotation circuits. This drastically multiplies chloride pitting aggression, making Incoloy 825 the mandatory standard over lower-tier alloys.
Southern Chile's burgeoning green ammonia and hydrogen plants demand PED-compliant bolting capable of resisting cryogenic wind shears, volatile electrolytes, and sub-Antarctic offshore atmospheric corrosion without embrittlement.
Transitioning into deeper ore bodies amplifies mechanical vibration, geothermal rock temperatures, and highly acidic mine runoff, demanding traceable bolting systems with verified impact toughness and certified NACE hardness boundaries.
Combining world-class forging and CNC precision with end-to-end metallurgical quality assurance certified by global registrars.
ISO 9001:2015 certified quality systems and PED 2014/68/EU pressure equipment qualification approved by TÜV Rheinland.
Every shipment is accompanied by complete mill test certificates, chemical melt analysis, Charpy impact, and 100% PMI verification.
Head office in Mumbai with an integrated production hub in Rajkot, India, blending hot-heading capacity up to M100 with agile CNC custom tooling.
Seamless CIF ocean and air freight routing into San Antonio, Valparaíso, and Antofagasta, packaged for harsh trans-Andean transport.
Addressing real technical, compliance, and logistical challenges encountered when importing specialty alloy fasteners into Chile.