Hastelloy C276/C22 (UNS N10276/N06022) for mining industry are the only commercial alloys that can reliably withstand the extreme corrosion-erosion conditions in modern mining operations. C276 excels in reducing environments with high chloride and sulfide content, while C22 offers superior performance in oxidizing and mixed-acid conditions, making them the gold standard for wet metallurgy, acid mine drainage (AMD) treatment and high-sulfur ore processing.
As the most durable solution for mining’s harshest environments, both alloys require no post-weld heat treatment to maintain full corrosion resistance, critical for remote field installations. With over 20 years of production experience, Emily PIPE supplies precision-manufactured Hastelloy C276/C22 seamless pipes, tubes and bars that meet the strictest international mining industry standards, including NACE MR0175/ISO 15156.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B622/B574 (C276), ASTM B619/B574 (C22), ASME SB622/SB574
2. Mining Industry Standards: NACE MR0175/ISO 15156-3 3. Pressure Vessel Standards: ASME Section VIII Div.1 4. Testing Standards: ASTM E8, ASTM G48 (Pitting/Crevice), ASTM E243 (Eddy Current) |
| Material Grade | 1. Hastelloy C276 (UNS N10276): W.Nr.2.4819, NiMo16Cr15W
2. Hastelloy C22 (UNS N06022): W.Nr.2.4602, NiCr21Mo14W 3. Equivalent Grades: NS3304/NS3308 (China), Hastelloy C276/C22 (USA) 4. Special Grades: Mining-grade (low sulfur); heavy-wall grade; erosion-resistant grade |
| Chemical Composition (Weight %) | C276: Ni≥57, Cr14.5-16.5, Mo15.0-17.0, W3.0-4.5, Fe4.0-7.0, C≤0.010
C22: Ni≥56, Cr20.0-22.5, Mo12.5-14.5, W2.5-3.5, Fe2.0-6.0, C≤0.015 Note: Higher Mo/W in C276 improves reducing acid resistance; higher Cr in C22 enhances oxidizing/mixed acid performance |
| Mechanical Properties (Annealed State) | C276: Tensile 690-900MPa, Yield≥310MPa, Elongation≥40%, HB180-230
C22: Tensile 690-930MPa, Yield≥310MPa, Elongation≥40%, HB180-235 Max Service Temp: 650℃ continuous |
| Dimensional Tolerance | 1. Seamless Pipes/Tubes: Ø6-50mm±0.15mm; Ø50-150mm±0.3mm; Wall±0.08-0.12mm
2. Bars/Rods: Ø6-50mm±0.3mm; Ø50-150mm±0.5mm; Ø150-300mm±0.8mm 3. U-Bend Tubes: Bend radius±0.5mm; Ovality≤3% of OD 4. Length Tolerance: ±2mm (1-12m); custom lengths up to 18m available |
| Why This Material Is Used in Mining Industry | 1. Unmatched Acid Mine Drainage (AMD) Resistance:
– Withstands pH 0.5-4.0 AMD containing H₂SO₄, HCl, HF, Fe³⁺ and chlorides – Corrosion rate <0.1mm/year vs. >10mm/year for 316L stainless steel – Eliminates frequent pipeline failures that cause environmental contamination 2. Superior Wet Metallurgy Performance: – Resists mixed acid leach solutions (H₂SO₄+HCl+HF) used in copper, nickel, cobalt and gold extraction – C22 outperforms C276 in oxidizing leach environments with ferric/cupric ions – Excellent resistance to cyanide solutions used in gold mining 3. Exceptional Sour Service Resistance: – NACE MR0175 certified for H₂S partial pressures up to 100 psi – Immune to sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC) – Ideal for high-sulfur ore mining and processing 4. Outstanding Erosion-Corrosion Resistance: – Withstands high-velocity slurry containing 30-70% solid particles – Resists impingement corrosion from pump impellers and spray nozzles – Service life 5-10 times longer than high-chrome white iron in many applications 5. Superior Field Fabricability: – No post-weld heat treatment required, critical for remote mining sites – Excellent weldability with conventional equipment – Reduces installation time and costs by 40-50% |
| Application Scenarios and Corresponding Customers | 1. Wet Metallurgy Processing:
– Applications: Leach tank piping, solvent extraction lines, electrowinning cells, heat exchangers, pump and valve components – Customers: BHP, Rio Tinto, Glencore, Vale, Freeport-McMoRan, Barrick Gold 2. Acid Mine Drainage (AMD) Treatment: – Applications: AMD collection piping, neutralization tanks, slurry pumps, filter presses, wastewater treatment systems – Customers: Anglo American, Newmont Corporation, China Minmetals, Jiangxi Copper 3. Copper and Nickel Mining: – Applications: Heap leach piping, solvent extraction plants, electrowinning cells, smelter acid plants – Customers: Codelco, Norilsk Nickel, Jinchuan Group, Tongling Nonferrous Metals 4. Gold and Silver Mining: – Applications: Cyanide leach piping, carbon-in-pulp (CIP) systems, elution circuits, refinery piping – Customers: Newcrest Mining, Gold Fields, Agnico Eagle Mines, Zijin Mining 5. Uranium and Rare Earth Mining: – Applications: Acid leach piping, solvent extraction systems, radioactive waste handling, rare earth separation plants – Customers: Cameco, Orano, China National Nuclear Corporation, China Rare Earth Holdings 6. Tailings Management: – Applications: Tailings slurry pipelines, thickener components, tailings storage facility piping – Customers: Teck Resources, ArcelorMittal Mining, Aluminum Corporation of China |
| Customer Requirements in This Industry | 1. Performance Requirements:
– AMD Resistance: Must withstand extreme pH and mixed acid environments – Erosion-Corrosion Resistance: Must resist high-velocity slurry impingement – Sour Service Resistance: Must meet NACE MR0175 requirements for H₂S – Chloride SCC Resistance: Must be immune to stress corrosion cracking – Low-Temperature Toughness: Must maintain toughness in high-altitude cold climates 2. Quality and Compliance Requirements: – NACE Certification: Must provide NACE MR0175/ISO 15156 certification – Full Traceability: Must provide 100% traceability from raw material to finished product – Material Certification: Must provide comprehensive MTRs including corrosion test results – Third-Party Inspection: Must allow inspection by independent mining industry inspectors – Environmental Compliance: Must meet strict environmental protection standards 3. Manufacturing Requirements: – Heavy-Wall Capability: Must produce thick-wall pipes for high-pressure slurry lines – Large-Diameter Welded Pipes: Must supply large-diameter pipes for main process lines – Custom Lengths: Must provide custom cut lengths to minimize field welding – Surface Finish: Must provide smooth surfaces to reduce slurry buildup – Heat Treatment Control: Must undergo proper solution annealing to maximize corrosion resistance |
| Common Related Products in This Industry | 1. Hastelloy C276/C22 Seamless Pipes/Tubes: For high-pressure process piping and heat exchangers
2. Hastelloy C276/C22 Welded Pipes: Cost-effective for large-diameter slurry and process lines 3. Hastelloy C276/C22 Bars/Rods: For manufacturing pump shafts, impellers, valve stems and fasteners 4. Hastelloy C276/C22 Fittings: Elbows, tees, reducers, flanges and couplings for mining piping systems 5. Hastelloy C276/C22 Forgings: Custom forgings including pump bodies, valve casings and impellers 6. Hastelloy C276/C22 Fasteners: Bolts, nuts, screws, studs and washers for severe corrosion service 7. Hastelloy C276/C22 Welding Materials: ERNiCrMo-4 (C276) and ERNiCrMo-10 (C22) electrodes/wires 8. Hastelloy C276/C22 Sheets and Plates: For manufacturing tanks, vessels and scrubber liners 9. Hastelloy C276/C22 Machined Components: Precision-machined valves, fittings and pump parts 10. Custom Fabricated Assemblies: Pre-fabricated piping spools and slurry handling systems |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of Mining Industry Alloy Expertise: We have supplied Hastelloy products to over 200 mining operations worldwide
2. NACE Certified Production Facility: Our production line is fully certified to NACE MR0175/ISO 15156 standards 3. Full-Process Quality Control: We implement 100% ultrasonic, eddy current and hydrostatic testing on all products 4. Complete International Certifications: Our products hold ASTM, ASME, PED and NACE certifications 5. Advanced Customization Capability: We can produce custom sizes, lengths and wall thicknesses per your drawings 6. Global Mining Supply Chain Experience: We have extensive experience delivering to remote mining sites worldwide 7. Professional Technical Support: Our metallurgical engineers provide expert material selection guidance for mining applications 8. One-Stop Solution: We provide complete solutions from raw material supply to pre-fabricated assemblies |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full MTR including chemical analysis, mechanical properties and NDT results. Corrosion and erosion test reports available upon request
2. Full Material Traceability: Every product has a unique heat number and complete traceability documentation 3. Value-Added Processing: We offer precision cutting, CNC bending, welding, end processing and surface finishing services 4. Emergency Response Service: We maintain strategic inventory to support urgent mining shutdown requirements 5. Market Growth: The global Hastelloy market for mining is projected to grow at a CAGR of over 8% through 2030, driven by increasing demand for battery metals and stricter environmental regulations 6. Sustainability Commitment: All our products are manufactured using sustainable practices and are 100% recyclable |
| Packaging | 1. Plastic Caps: All pipe/bar ends are protected with heavy-duty polyethylene caps with internal sealing rings
2. Waterproof Film: Each product is individually wrapped in waterproof and anti-corrosion film 3. Bundle Packing: Products of the same size are bundled with steel straps and wooden spacers 4. Wooden Case: Bundles are packed in sturdy fumigated wooden cases with steel reinforcement for international shipping 5. Export Standard Packing: All packaging complies with international export standards and ISPM 15 regulations 6. Marking: Each package is clearly marked with product specifications, heat number, quantity and destination |
Looking for Hastelloy pipe or bar for mining applications? Send us your size, quantity and operating conditions. We will provide a customized solution and competitive quotation.