Inconel 718
Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid. This superalloy has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids.
Description
| Nickel Alloy - Technical Specification Table | |
| Parameter / Category | Description & Common Specifications |
| Material Grades | Ni-Cr Alloys: Alloy 600 (UNS N06600), Alloy 601 (UNS N06601) Ni-Cr-Fe Alloys: Alloy 800/800H/800HT (UNS N08800/N08810/N08811), Alloy 825 (UNS N08825) Ni-Cr-Mo Alloys: Alloy C-276 (UNS N10276), Alloy C-22 (UNS N06022), Alloy C-2000 (UNS N06200) Ni-Mo Alloys: Alloy B-2 (UNS N10665), Alloy B-3 (UNS N10675) Ni-Cr-Co Alloys: Alloy 617 (UNS N06617), Alloy 230 (UNS N06230) Precipitation-Hardenable: Alloy X-750 (UNS N07750), Alloy 718 (UNS N07718) |
| Standard Specifications | ASTM B163: Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes ASTM B166: Nickel-Chromium-Iron Alloy (UNS N06600, N06601, N06603) Rod, Bar, and Wire ASTM B168: Nickel-Chromium-Iron Alloy (UNS N06600, N06601) Plate, Sheet, and Strip ASTM B564: Nickel Alloy Forgings ASTM B622: Seamless Nickel and Nickel Alloy Pipe and Tube ASME SB-443: Nickel-Chromium-Molybdenum-Columbium Alloy (UNS N06625) Plate, Sheet, and Strip |
| Forms Available | Plate • Sheet • Strip • Foil • Bar • Rod • Wire • Pipe • Tube • Fittings • Forgings • Fasteners |
| Surface Finish | Hot Rolled (HR): Annealed & pickled Cold Rolled (CR): Annealed & pickled Polished: Mechanical polished to specified roughness Bright Annealed (BA): Smooth, reflective finish Turned & Polished: For bar and rod products |
| Thickness/Diameter Range | Sheet/Plate: 0.5mm to 200mm+ Strip/Foil: 0.05mm to 2.0mm Bar/Rod: 3mm to 500mm+ Pipe/Tube: OD 1/8" to 48"+ Wire: 0.025mm to 10mm+ |
| Mechanical Properties (Varies by grade & condition) | Tensile Strength: 550 MPa to 1500+ MPa Yield Strength: 240 MPa to 1300+ MPa Elongation: 20% to 60% Hardness: 150 HB to 400+ HB |
| Key Characteristics | High Temperature Strength: Excellent creep resistance Corrosion Resistance: Outstanding in various corrosive media Oxidation Resistance: Good resistance to oxidizing atmospheres Mechanical Properties: Maintains strength at elevated temperatures Fabricability: Good weldability and formability |
| Applications | Aerospace: Turbine blades, engine components Chemical Processing: Reactors, heat exchangers, piping systems Power Generation: Gas turbines, nuclear reactors Marine Engineering: Seawater equipment, propeller shafts Oil & Gas: Downhole tools, wellhead components Medical: Implants, surgical instruments |
| Special Features | Cryogenic Service: Suitable for low-temperature applications Stress Corrosion Cracking Resistance: Excellent performance Localized Corrosion Resistance: Good pitting and crevice corrosion resistance Thermal Stability: Maintains properties after long-term exposure to high temperatures |
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