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Model No: Haynes 188 Cobalt Alloy
Haynes 188 Cobalt Alloy
Lork Group is a leading exporter and supplier of Haynes 188 Cobalt Alloy. We offer extensive inventory in sheet, plate, bar, tube, and welding wire. Request a free quote and sample today for aerospace, gas turbine, and high-temperature applications.
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
In the demanding world of aerospace, power generation, and industrial gas turbines, materials are pushed to their absolute limits. Components must retain exceptional strength while resisting relentless oxidation and corrosion at temperatures that would cause most superalloys to fail. Haynes 188, a cobalt-nickel-chromium-tungsten superalloy, is engineered to thrive in these extreme conditions, offering a unique combination of properties that make it indispensable for critical high-temperature applications.
Specifications and Availability at Lork Group
Haynes 188 meets stringent industry standards to ensure quality and performance, including:
- AMS 5608: Sheet, Strip, and Plate
- AMS 5772: Bars, Forgings, and Rings
- AMS 5801: Welding Wire and Electrode
As a leading supplier of high-performance alloys, Lork Group stocks and supplies Haynes 188 in a comprehensive range of product forms to meet your manufacturing needs:
- Sheet & Plate
- Bar & Rod
- Tubing
- Forgings
- Welding Wire
Chemical Composition
| Weight % | C | Mn | Si | P | S | Cr | Ni | W | La | B | Fe | Co |
| Alloy 188 | 0.05-0.15 | 1.25 max | 0.20-0.50 | 0.02 max | 0.015 max | 20-24 | 20-24 | 13-16 | 0.02-0.12 | 0.015 | 3 max | Bal |
Mechanical Properties
| Material | Temp°F | Yield Strength (0.2% Offset) min | Tensile Strength min | Elongation (%) | Hardness | ||
| ksi | MPa | ksi | MPa | ||||
| Alloy 188 Extruded Bar Solution Treated (AMS 5772) | RT | 55 | 379 | 125 | 862 | 45 | ≤302HB |
| Material | Temp°F | Thickness (Inches) | Yield Strength (0.2% Offset) min | Tensile Strength min | Elongation (%) | Hardness HRC | ||
| ksi | MPa | ksi | MPa | |||||
| Alloy 188 Sheet Solution Treated (AMS 5608) | RT | ≤0.020" | 55 | 379 | 125 | 862 | 40 | - |
| Alloy 188 Sheet Solution Treated (AMS 5608) | RT | ≥0.020" | 55 | 379 | 125 | 862 | 45 | - |
| Alloy 188 Sheet Solution Treated (AMS 5608) | 1200 | ≤0.020" | 36 | 248 | 90 | 621 | 40 | - |
| Alloy 188 Sheet Solution Treated (AMS 5608) | 1200 | ≥0.020" | 36 | 248 | 90 | 621 | 50 | - |
Unmatched Performance in Severe Environments
Haynes 188 stands out due to its carefully balanced composition. The addition of lanthanum is a key differentiator, forming a highly stable, protective oxide scale that dramatically slows further degradation. This grants the alloy outstanding resistance to:
- High-Temperature Oxidation: Effective protection in oxidizing atmospheres up to 2000°F (1093°C).
- Sulfidation & Hot Corrosion: Excellent resistance to attack from sulfur-containing fuels and sulfate deposits, a common cause of failure in turbine engines.
- Cyclic Conditions: Its ability to form a tenacious, adherent scale makes it highly resistant to spalling and cracking under thermal cycling.
Superior Mechanical Strength and Fabricability
A rare advantage of Haynes 188 is its blend of high strength and good fabricability. The alloy delivers excellent long-term stress rupture strength and fatigue resistance under thermal-mechanical loading.
- Forming and Machining: It can be forged, hot-worked, and cold-worked. However, it work-hardens rapidly, so complex forming operations require intermediate annealing treatments to restore workability.
- Welding:Haynes 188 exhibits good weldability using common techniques such as gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW), making it suitable for constructing complex assemblies.
- Heat Treatment: The alloy is supplied in a solution-annealed condition (typically at 2150°F followed by a rapid quench) to achieve optimal mechanical properties and microstructural stability.
Key Applications Across Critical Industries
The property profile of Haynes 188 makes it the material of choice for the most thermally challenged components:
- Aerospace Gas Turbines: Combustion liners, flame holders, transition ducts, spray bars, and afterburner components.
- Industrial Gas Turbines: Transition ducts, combustion chambers, and other hot gas path components.
- Heat Treating Equipment: Furnace fixtures, trays, and radiant tubes.
- Chemical Processing: Components for high-temperature processes involving corrosive atmospheres.
Our extensive inventory and technical expertise ensure you receive the right material, with the proper certifications, precisely when you need it.
If your project involves extreme temperatures, corrosive atmospheres, and demanding mechanical stresses, Haynes 188 Cobalt Alloy provides the reliable performance you require.
Contact Lork Group today to discuss your Haynes 188 requirements, check availability, and request a quote. Our specialists are ready to provide you with the technical data and support to ensure your project's success.
WhatsApp： +86-17335753350
Email： daiy@lorkgroup.com
