GH16
embeddoc url=”https://www.cnnickel.com/wp-content/uploads/2024/12/GH16.doc” download=”all” viewer=”microsoft”]HuaNickel GH16 is a Fe-Ni-Cr-based solution-strengthened deformed superalloy composed of chromium, tungsten and molybdenum. The alloy can be used for long periods of time below 950°C and for short periods of time below 1000°C. The alloy has good oxidation resistance, high plasticity, high thermal strength and good resistance to cold and heat fatigue.
GH16 Chemical composition：
| Fe | Cr | Ni | W | Mo | Nb | N | V | B | Ce | Mn | Si | P | S | C | |
| Min | Bal | 19 | 32 | 5 | 2.6 | 0.9 | 0.13 | 0.1 | ≤ | ||||||
| Max | 22 | 36 | 6 | 3.3 | 1.4 | 0.25 | 0.3 | 0.01 | 0.05 | 1.8 | 0.6 | 0.02 | 0.015 | 0.08 | |
GH16 Physical properties：
| Density | 8.31g/cm³ |
| Linear expansion coefficient | 14~17 |
| Thermal conductivity | 12~23W/m°C |
| Specific heat capacity | 450~800(J/kg℃) |
GH16 Mechanical properties：
| Standard number | Variety | Heat treatment | Tensile properties | Long-lasting performance | |||||||||
| θ/℃ | σb/MPa | σp0.2/MPa | δ₅/% | ψ/% | θ/℃ | σ/MPa | τ/h | δ₅/% | ψ/% | ||||
|
GJB 1952A HB 5418 |
Cold-rolled plate |
(1140~ 1180)℃/AC |
20 | ≥735 | — | ≥35 | — | — | |||||
| 750 | ≥360 | — | ≥30 | — | — | — | — | —— | — | ||||
| 9000 | ≥185 | — | ≥40 | 900 | 69 | ≥20 | ≥20 | ||||||
|
HB 5417 HB 5410 |
Bars and rings |
1160℃/AC |
20 | ≥705 | — | ≥35 | ≥40 | — | |||||
| 750 | ≥390 | ≥30 | ≥35 | 750 | I | 180 | ≥23 | ||||||
| Ⅱ | 137 | ≥100 | — | ||||||||||
| 9000 | ≥185 | — | ≥40 | ≥45 | 900 | 69 | ≥24 | ≥20 | ≥30 | ||||
GH16 Alloy properties：
High temperature resistance: It has excellent high temperature resistance, can work for a long time at high temperatures from 700°C to 850°C, and can maintain stable mechanical properties and oxidation resistance.
Corrosion resistance: The alloy can still show good corrosion resistance in high temperature and corrosive media, and has excellent acid, alkali and salt resistance.
High strength performance: It has high yield strength and tensile strength, and can withstand large stress and working load in high temperature environment.
Fatigue properties: After special treatment, the alloy has excellent fatigue life and fatigue strength.
GH16 Uses of alloys：
HuaNickel GH16 alloy has been used in the manufacture of aero engine combustion chamber plate stamping parts and welded structural parts and other high-temperature parts, such as load-bearing elements, structural shells, mounting edges, mounts and pipe joints, as well as parts that work for a short time below 1000°C.
GH16 Process performance：
Welding process: The alloy has good welding process performance. It can be joined by argon arc welding and contact welding; Automatic argon arc welding without filler should adopt a small welding current and a lower welding speed, otherwise it is easy to produce undercut defects. Since the oxidation resistance of the alloy is slightly worse than that of nickel-based alloys, attention should be paid to strengthening the protection during argon arc welding.
Heat treatment: the only heat treatment method for parts is solution treatment; The final solution treatment temperature is 1160°C±10°C, and the intermediate heat treatment temperature is 1080°C±10°C, and the solution temperature is 1000°C or higher to relieve welding stress. Before heat treatment, the surface oil, cutting coolant and other dirt should be cleaned to avoid local corrosion of the surface during heat treatment.
Relevant standards:
GJB1952A 、GJB 5301、 HB 5417、 GH16 、HB 5418 、GH16 、HB5419、 GH16 、HB/Z140