GH5188 nickel based superalloys has excellent creep and fatigue resistance and can maintain stable mechanical properties for a long time in high temperature environments.
GH5188 ni based superalloy is particularly suitable for manufacturing key components such as aircraft engine turbine blades, combustion chambers and turbine disks. Its high temperature corrosion resistance and good welding performance further enhance its reliability and durability under harsh working conditions.
GH5188's standard product forms include tubes, pipes, plates, strips, sheets, round bars, flat bars, forgings, hexagonal bars and wires. These products are available in a wide variety of sizes. Please contact us at ss@gneesteel.com for details.
GH5188 High Temperature Alloy Chemical Composition
| C | Cr | Ni | Co | W | Fe | B | La |
| 0.05～0.15 | 20.0～24.0 | 20.0～24.0 | Remain | 13.0～16.0 | ≤3.0 | ≤0.015 | 0.03～0.12 |
| Mn | Si | P | S | Ag | Bi | Pb | Cu |
| No more than | |||||||
| ≤1.25 | 0.20～0.50 | 0.02 | 0.015 | 0.001 | 0.0001 | 0.001 | 0.07 |
GH5188 High Temperature Alloy Physical Properties
| Particle size range | Particle size range | Hall flow rate | Bulk density | Tap density | ||
| D10 | D50 | D90 | ||||
| 15-53μm | 17-22μm | 32-38μm | 52-58μm | ≤18s/50g | ≥4.80g/cm3 | ≥5.40g/cm3 |
GH5188 High Temperature Alloy Mechanical Properties
| variety | Tensile properties | Long-lasting performance | Hardness HV | Other features | ||||||
| θ/℃ | σP0.2/MPa | σb/MPa | δ5/% | θ/℃ | σ/MPa | t/h | δ5/% | |||
| Not less than | Not less than | |||||||||
| Middle plate | 20 | 380 | 860 | 45 | 815① | 165 | 23 | 10 | 282 | Grain size ≥ 4 |
| 927① | 76 | 23 | 15 | |||||||
| sheet | 20 | 380 | 860 | 45 | 927 | 76 | 23 | 15 | - | Bending, oxidation resistance, grain size |
| 650 | 250 | 620 | 50 | |||||||
| Strip | 20 | 380 | 860 | 40 | 927 | 62 | 23 | 8 | - | Bending 180°, anti-oxidation, grain size ≥ 4 |
| δ≤0.51mm | 650 | 250 | 620 | 40 | ||||||
| Strip | 20 | 380 | 860 | 45 | 927 | 76 | 23 | 15 | - | |
| δ>0.51mm | 650 | 250 | 620 | 50 | ||||||
| Rods | 20 | 380 | 860 | 45 | 927 | 90 | 23 | 15 | HBS≤302 | Antioxidant |
| Forgings | 20 | 380 | 860 | 45 | 927 | 83 | 23 | 15 | HBS≤293 | Antioxidant |
| Precision castings | 20② | 300 | 600 | 10 | 815 | 165 | 15 | - | - | - |
Available products and standard specifications
Specifications for GH5188 include the following:
GH5188GJB 3317-1998 Specifications for hot-rolled plates of high-temperature alloys for aviation use
GH5188Z9 0103-1990 Technical conditions for GH188 alloy plates
GH5188Z9 132-1999 Technical conditions for cold-drawn wires of GH188 alloy for welding
GH5188Q/5B 4002-1992 Cold-rolled strips of GH188 alloy
GH5188Q/5B 4003-1992 Cold-rolled plates of GH188 alloy
GH5188Q/5B 4014-1992 Technical conditions for GH188 alloy forgings
GH5188Q/5B 4020-1992 K188 alloy investment castings
GH5188Q/5B 4022-1992 GH188 alloy bar
GH5188Q/5B 4057-1992 GH188 high temperature alloy cold drawn welding wire
