Haynes 188 Alloy — cobalt base Alloy
Haynes 188 Alloy — cobalt base Alloy,
Haynes 188 Alloy, Haynes 188 Bar, Haynes 188 flange，Haynes 188, Haynes 188 pipe, Haynes 188 plate, Haynes 188 wire,
Common Trade Names:Haynes 188, Alloy 188, GH5188, UNS R30188
Hayness 188 (Alloy 188)is a cobalt-base alloy with excellent high -temperature strength and good oxidation resistance to 2000°F (1093°C). The high chromium level coupled with small additions of lanthanum produce an extremely tenacious and protective scale. The alloy also has good sulfidation resistance and excellent metallurgical stability as displayed by its good ductility after prolonged exposure to elevated temperatures. Good fabricability and weldability combine to make the alloy useful in gas turbine applications such as combustors, flame holders,liners and transition ducts.
Alloy 188 Chemical Composition
| C | Cr | Ni | Fe | W | La | Co | B | Mn | Si |
| 0.05 0.15 | 20.0 24.0 | 20.0 24.0 | ≦ 3.0 | 13.0 16.0 | 0.02 0.12 | bal | ≦ 0.015 | ≦ 1.25 | 0.2 0.5 |
Alloy 188 Physical properties
| Density （g/cm3） |
Melting point （℃） |
Specific heat capacity （J/kg·℃） |
Thermal expansion coefficient （(21-93℃)/℃ ） |
Electric resistivity （Ω·cm） |
| 9.14 | 1300-1330 | 405 | 11.9×10E-6 | 102×10E-6 |
Alloy 188 Mechanical Properties
Instantaneous（bar，typical hot treatment）
| Test temperature ℃ |
Tensile strength MPa |
Yield strength (0.2yield point)MPa |
Elongation % |
| 20 | 963 | 446 | 55 |
Alloy 188 Standards and Specifications
AMS 5608, AMS 5772,
| Bar/Rod | Wire | Strip/Coil | Sheet/Plate |
| AMS 5608 | AMS 5772 | ||
Alloy 188 Available Products in Sekonic Metals
Alloy 188 Bars & Rods
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Alloy 188 welding wire
Supply in welding wire and spring wire in coil form and cut length.
Alloy 188 sheet & plate
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Alloy 188 seamless tube
Standards size and customized dimension can be produced by us with small tolerance
Alloy 188 strip & coil
Soft condition and hard condition with AB bright surface, width up to 1000mm
Why Haynes 188 ?
• Strength and oxidation resistant to 2000°F
• Good post-aging ductility
• Resistant to sulfate deposit hot corrosion
Haynes 188 Application field：
Gas turbine engine combustor cans, spray bars, flame-holders and afterburner liner
Haynes 188 is currently widely used — generation materials N10665 (B-2), N10276 (C-276), N06022 (C-22), N06455 (-4) and N06985 (G-3),4, principle: when the workpiece with simple shape is blanked, a single process die can be used to complete the blanking, but when the workpiece with complex shape is blanked, because the structure or strength of the mold is affected by Xianzhi, its inside and outside outline should be divided into several parts for blanking, and multiple hardware stamping process is needed.Many people use the Thai nickel-based alloy is also because the metal material has good heat resistance, as we all know, many industrial processes in the environment temperature is high, so in such an environment conditions, the metal material heat resistance requirements will be higher, and this kind of alloy material after high temperature does not produce any change, can still be stable state, theThis kind of alloy material is also widely used because of this advantage.
Materials
Standard:alloy steels F5 and 410; stainless steels 304, 304L, 316, 316L, 321 and 347.
Non-standard: high nickel alloys(inconel 718,Inconel 625, incoloy 825, Incoloy 925, Alloy 20, GH3030,Nimonic 80A), super alloy steels(Haynes 25, Alloy 25, Haynes188, ect) and other stainless grades.
