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Model No: Hastelloy S Sheet
AMS 5873 / UNS N06635 / Hastelloy S Sheet
AMS 5873 is the aerospace standard that defines Hastelloy S (UNS N06635) in sheet form, outlining its composition, mechanical properties, and other requirements. This material is used in high-temperature, corrosive environments typical in aerospace and industrial applications.
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
AMS 5873 is the aerospace standard that defines Hastelloy S (UNS N06635) in sheet form, outlining its composition, mechanical properties, and other requirements. This material is used in high-temperature, corrosive environments typical in aerospace and industrial applications.
Hastelloy S (UNS N06635) is a nickel-base, high-temperature alloy with a unique combination of properties. It has excellent thermal stability, low thermal expansion and excellent oxidation resistance to 2000°F (1093°C). In addition, the alloy has good high-temperature and thermal fatigue strength. S alloy retains its strength and ductility after aging at temperatures of 800 to 1600°F (427 to 871°C).
Chemical Composition
| Elements | Content (%) |
|---|---|
| Nickel, Ni | 67 |
| Chromium, Cr | 14.5 - 17 |
| Molybdenum, Mo | 14 - 16.5 |
| Iron, Fe | 3 |
| Cobalt, Co | 2 |
| Tungsten, W | 1 |
| Copper, Cu | 0.35 |
| Manganese, Mn | 0.30 - 1.0 |
| Silicon, Si | 0.20 - 0.75 |
| Aluminum, Al | 0.10 - 0.50 |
| Carbon, C | 0.020 |
| Phosphorous, P | 0.020 |
| Boron, B | 0.015 |
| Sulfur, S | 0.015 |
| Lanthanum, La | 0.010 - 0.10 |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength (@ 1093°C/1999°F, thickness 1.10-1.60 mm/0.0433-0.0630 in.) | 110 MPa | 16000 psi |
| Yield strength (@ 1093°C/1999°F, thickness 1.10-1.60 mm/0.0433-0.0630 in., 0.2% offset) | 52 MPa | 7540 psi |
| Elastic modulus | 212 GPa | 30700 ksi |
| Elongation at break (@ 982°C/1800°F, thickness 1.10-1.60 mm/0.0433-0.0630 in., in 50.8 mm) | 46% | 46% |
| Charpy Impact (V Notch; solution heat-treated, not aged) | 190 J | 140 ft-lb |
Applications
Aerospace: Jet engine components (combustors, afterburners), turbine shrouds, heat shields.
Industrial: Gas turbines, industrial furnaces, chemical processing equipment exposed to aggressive environments.
Fabrication Considerations
Forming and Welding: Requires annealing for workability; welding uses compatible fillers (e.g., Hastelloy S filler) with potential post-weld heat treatment to restore properties.
Processing: AMS 5873 specifies mechanical testing (tensile, yield strength, elongation) and nondestructive evaluation to ensure quality.
Comparisons
Hastelloy X (UNS N06002): Offers similar high-temperature utility but differs in oxidation resistance and composition.
Inconel Alloys: While also nickel-based, Hastelloy S excels in specific corrosive, high-sulfur environments.
Compliance and Testing
Adheres to AMS 5873 for aerospace use, with additional certifications possible under ASTM/ASME standards.
Mandatory chemical, mechanical, and microstructural testing to meet aerospace rigor.
Limitations
Cost: High nickel content and specialized processing increase expense.
Temperature Limits: While superior in high-temperature oxidation, performance may diminish beyond ~1200°C compared to specialized ceramics.
AMS 5873-compliant Hastelloy S (UNS N06635) sheet is a critical material for aerospace and industrial applications demanding exceptional high-temperature strength and corrosion resistance. Its stringent manufacturing standards ensure reliability in extreme environments, though cost and fabrication complexity are considerations.
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