ASTM B444 Inconel 625 Fittings with Corrosion Resistance and High-Temperature Strength for Tees Laterals Y Pieces and Sleeves
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Product Description
ASTM B444 UNS NO6625 Special Fittings: Tees, Laterals, Y Pieces, Sleeves
ASTM B444 UNS N06625 (commonly known as Inconel 625) is a nickel-based superalloy designed for exceptional corrosion resistance and high-temperature strength applications.
Chemical Composition
| Element | Composition Limits |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 23.0% |
| Molybdenum (Mo) | 8.0 – 10.0% |
| Niobium (Nb) + Tantalum (Ta) | 3.15 – 4.15% |
| Iron (Fe) | ≤ 5.0% |
| Cobalt (Co) | ≤ 1.0% |
| Manganese (Mn) | ≤ 0.50% |
| Silicon (Si) | ≤ 0.50% |
| Aluminum (Al) | ≤ 0.40% |
| Titanium (Ti) | ≤ 0.40% |
| Carbon (C) | ≤ 0.10% |
| Phosphorus (P) | ≤ 0.015% |
| Sulfur (S) | ≤ 0.015% |
Key Composition Benefits
- High Nickel + Chromium: Provides excellent resistance to oxidation and corrosion in aggressive environments including seawater and various acids.
- Molybdenum + Niobium: Significantly improve strength at elevated temperatures and enhance resistance to pitting and crevice corrosion in chloride environments.
- Low Carbon, Sulfur, and Phosphorus: Minimizes carbide precipitation and hot-cracking, improving weldability and material toughness.
- Controlled Aluminum and Titanium: Maintains weldability and ductility by preventing excessive strengthening precipitates that could cause brittleness.
Application Note: ASTM B444 specifically covers seamless pipe and tube made from this alloy. The controlled composition ensures the material meets mechanical and corrosion-resistance requirements for demanding applications in aerospace, chemical processing, marine, and oil & gas industries.
Important: For critical design or certification purposes, always verify against the latest official ASTM B444 specification or the mill test certificate (MTC) from the manufacturer.
Important: For critical design or certification purposes, always verify against the latest official ASTM B444 specification or the mill test certificate (MTC) from the manufacturer.
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Company
BEST PIPELINE EQUIPMENT CO.,LTD
Location
China Factory : Suzhou Industrial Park, JiangSu Province,China
Contact Person
amy