AMS 5608 specification covers a corrosion- and heat-resistant cobalt-base alloy (Alloy 188 / Haynes 188 / UNS R30188) in the form of sheet, strip, and plate.
Alloy 188 (Haynes® 188 / UDIMET® 188 / UNS R30188) is a cobalt-based alloy. Due to Alloy 188's unique combination of properties, it has excellent high temperature strength and oxidation resistance up to 2100°F (1150°C) . Alloy 188 is used in various applications from chemical and nuclear industries to transition ducts, combustor cans, spray bars, flame-holders, and afterburner liners in jet engines.
ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier, offering AMS 5608 Alloy 188 sheet at factory-direct prices with full material traceability and fast global delivery.
Product Forms & Availability – Alloy 188 (UNS R30188 / Haynes 188)Sheet, Strip & Plate (AMS 5608)| Product Form | Thickness Range | Condition |
|---|
| Sheet | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Solution heat treated | | Strip | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Solution heat treated | | Plate | 0.188″ – 2.000″ (4.8mm – 50.8mm) | Solution heat treated |
Additional Alloy 188 Product Forms| Product Form | Specification | Availability |
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| Bar | AMS 5772 | Available | | Forgings & Rings | AMS 5772 | Available | | Tube | Various | Available | | Welding Wire | AMS 5801 | Available |
For all stock availability, contact Sales.
Specifications – Alloy 188| Specification | Product Form | Description |
|---|
| AMS 5608 | Sheet, strip, plate | Cobalt-base, corrosion and heat resistant | | AMS 5772 | Bars, forgings, rings | Alloy 188 bar products | | AMS 5801 | Wire | Alloy 188 welding wire | | UNS R30188 | Unified numbering system | Alloy 188 | | Haynes® 188 | Trade name | Haynes International | | UDIMET® 188 | Trade name | Special Metals |
Fabrication and Heat TreatmentWhile Alloy 188 is renowned for its strength, it is surprisingly amenable to fabrication, provided the fabricator accounts for its rapid work-hardening rate. Forming: In the annealed state, the alloy is ductile and can be cold formed. However, due to a high work-hardening coefficient, complex deep draws or bends may require intermediate anneals (Solution treatment at 2150°F / 1175°C followed by rapid cooling) to restore ductility . Welding: Alloy 188 exhibits excellent weldability. It can be joined via Gas Tungsten Arc Welding (GTAW/TIG) or Electron Beam Welding. The filler metal should be matching Alloy 188 (AMS 5801) to maintain mechanical properties in the heat-affected zone (HAZ). Hot Working: Recommended forging temperatures range from 2150°F to 2100°F (1175°C to 1150°C)
Factory Price – AMS 5608 Alloy 188 Sheet (UNS R30188 / Haynes 188)Indicative factory pricing (FOB China): | Thickness Range | Form | Condition | Price (USD/kg) |
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| 0.010″ – 0.020″ (0.25mm – 0.5mm) | Sheet/Strip | Solution heat treated | 100–100–180 | | 0.020″ – 0.040″ (0.5mm – 1.0mm) | Sheet/Strip | Solution heat treated | 90–90–160 | | 0.040″ – 0.063″ (1.0mm – 1.6mm) | Sheet/Strip | Solution heat treated | 85–85–150 | | 0.063″ – 0.125″ (1.6mm – 3.2mm) | Sheet | Solution heat treated | 80–80–140 | | 0.125″ – 0.187″ (3.2mm – 4.8mm) | Sheet | Solution heat treated | 75–75–130 | | 0.187″ – 0.500″ (4.8mm – 12.7mm) | Plate | Solution heat treated | 70–70–125 | | 0.500″ – 2.000″ (12.7mm – 50.8mm) | Plate | Solution heat treated | 65–65–120 |
Volume discounts available for orders above 500 kg. Custom sizes and tolerances available – contact us for a firm quote.
ApplicationsJet Engine Components: Transition ducts, combustor cans, spray bars, flame-holders, afterburner liners Gas Turbines: Combustion chambers, liners, and hot section hardware for land-based and aerospace turbines Aerospace: Exhaust nozzles, tailpipes, thrust reverser components, turbine seals Industrial Furnaces: High-temperature furnace hardware, radiant tubes, heat-treating fixtures Chemical Processing: Equipment requiring oxidation resistance at very high temperatures Nuclear Industry: High-temperature nuclear service components Power Generation: Components for advanced gas turbine systems
Contact UsRequest a quote for AMS 5608 / Alloy 188 Sheet (Haynes® 188 / UDIMET® 188 / UNS R30188) – 22Cr – 22Ni – 14.5W – 0.07La . Please provide: Thickness, width, and length required Form (sheet, strip, or plate) Quantity (kg or pieces) Destination port Any special certification requirements
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