Hastelloy Alloy (HASTELLOY C276)

Description

1. Product Overview

Hastelloy C276 is a nickel-chromium-molybdenum alloy with a tungsten addition, globally recognized for its exceptional resistance to pitting, stress-corrosion cracking, and oxidizing/reducing environments. It is primarily used in critical process equipment for chemical processing, pollution control, and oil & gas applications where conventional stainless steels fail rapidly. Its strategic value lies in enabling asset-intensive industries to extend equipment lifespan, reduce unplanned downtime, and lower total cost of ownership in highly corrosive, high-temperature operations.

2. Key Specifications & Technical Characteristics

• Chemical Composition (ASTM B574 / B575):

  • Nickel (Ni): 57% (balance)

  • Chromium (Cr): 14.5–16.5%

  • Molybdenum (Mo): 15–17%

  • Tungsten (W): 3–4.5%

  • Iron (Fe): 4–7% max

  • Cobalt (Co): ≤2.5% max

• Purity / Grade:
  UNS N10276, DIN 2.4819, high-purity melt with low carbon (≤0.01%) and low silicon (≤0.08%)

• Physical Characteristics (typical forms):

  • Forms: Plate, sheet, bar, pipe, fitting, and wire

  • Density: 8.89 g/cm³

  • Tensile strength (annealed): 690 MPa (100 ksi) min

  • Hardness (max): 100 HRB (Rockwell B)

• Packaging Options:

  • Export-worthy wooden pallets / steel crates

  • Anti-rust VCI paper + polyethylene interleaving

  • Custom-cut plates or coils with color-coded tags

• Shelf Life:
  Indefinite under dry storage (≥10°C, <60% RH). No chemical aging degradation.

3. Core Industrial Applications

• Chemical Processing (HCl, H₂SO₄, Cl₂, organics):
  Use case: Reactors, distillation columns, reboilers.
  Advantage: Resists both oxidizing and reducing acids without rapid pitting—unlike 316L or duplex steels which fail within months.

• Flue Gas Desulfurization (FGD) – Power & Waste-to-Energy:
  Use case: Ductwork, absorbers, slurry piping.
  Advantage: Superior resistance to chloride-induced SCC under acidic dewpoint conditions; reduces unplanned outages by ~70% vs. high-alloy austenitic steels.

• Oil & Gas (sour gas, downhole, subsea):
  Use case: Downhole tubing, wellhead components, umbilical tubing.
  Advantage: Withstands H₂S, CO₂, and chlorides up to 400°F (204°C) without sulfide stress cracking (meets NACE MR0175/ISO 15156).

• Pharmaceuticals & Specialty Chemicals:
  Use case: High-purity reactors and transfer lines.
  Advantage: Excellent corrosion control prevents metal ion contamination and batch rejection.

4. Competitive Advantages

• Quality Consistency:
  Melted under stringent double-vacuum (VIM + VAR) or AOD refining. Full mill test reports (MTRs) traceable to heat number, with 3rd-party optional (SGS, Bureau Veritas).

• Supply Reliability:
  Stocked in 4 continents (Asia, EU, North America, MENA). Lead time for standard sizes: 7–14 days ex-warehouse; custom fabrication: 20–25 days.

• Logistics Capability:
  In-house cutting, beveling, laser marking, and certified packaging. Direct shipping to job sites or bonded warehouses.

• Price Competitiveness:
  Tier-1 mill direct pricing – 12–18% below Western European distributors for equivalent UNS N10276. Bulk / long-term contracts eligible for index-linked adjustments.

• Sustainability & Compliance:
  Fully REACH, RoHS, and Conflict Mineral compliant. Up to 85% nickel content is recyclable; low-CO₂ melt options available with EPD upon request.

• Technical Support:
  Dedicated corrosion engineers included for pre-sales weld procedure qualification (WPQ) and post-sales failure analysis.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ):
  500 kg per size/form (mix-and-match allowed across plates, bars, and pipes).

• BULK 20MT Loading Capacity:
  20 MT per standard 20-foot container
  (Approx. 20 metric tons net, palletized with 3-5% overpack allowance for fittings).

• Pricing & Payment:
  EXW, CIF, or DAP terms. Letters of credit (LC at sight) or TT advance for initial orders. Quarterly price indices available for contract customers.