Chinese grade: GH3039 Nickel-based high-temperature alloy
Overview of GH3039 Nickel-based High Temperature Alloy
Gh3039 is a single-phase austenite solid solution reinforced alloy. It has medium thermal strength and good thermal fatigue properties below 800°C, and good oxidation resistance below 1000°C. Stable structure, good cold forming and good weldability. Suitable for long-term use of combustion chambers and afterburner components of aircraft engines below 850°C. The alloy can be used in sheets, bars, wires, pipes and forgings.
Gh3039 Material Grade: Gh3039 (GH39)
GH3039 Material Technical Standard:
GH3039 Chemical Composition
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.08 | 0.80 | 0.40 | 0.020 | 0.012 | 19.0-22.0 | margin | 1.80-2.30 |
|
| other | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
| - | 0.35-0.75 | 0.35-0.75 | 3.00 | - | - | - | 0.90-1.30 |
Note: 1) Cerium is allowed in the alloy.
In alloys, ω(Cu) = 0.20%.
Gh3039 heat treatment system: hot-rolled and cold-rolled strip solid solution treatment: 1050~1090℃, air-cooled. Rod tube solution treatment: 1050-1080℃, air-cooled or water-cooled.
Gh3039 variety specifications and supply conditions: It can supply hot-rolled plates, cold-rolled plates, strips, bars, wires, pipes, and forgings of various specifications. The plates, tapes and tubes are then left factory after solid solution treatment and pickling. Wires that are not heat treated or heat treated when feeding wires.
Gh3039 smelting casting process: adopts arc furnace smelting, arc furnace or non-vacuum induction furnace with electroslag remelting or vacuum arc remelting, vacuum induction furnace with electroslag or vacuum arc remelting.
The purpose and special requirements of Gh3039: The aero engine combustion chamber and afterburner combustion chamber parts made of this alloy material have been well performed after long-term production and use tests.
Physical and chemical properties of Gh3039
●Gh3039 Thermal Performance
Gh3039 Thermal Conductivity
| I/℃ | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 |
| λ/（W/（m·℃）） | 13.8 | 15.5 | 17.2 | 18.8 | 20.5 | 21.8 | 23.4 | 25.1 | 26.8 |
●GH3039 specific heat capacity
| I/℃ | 150 | 200 | 300 | 400 | 500 | 600 | 700 | 800 |
| c/(J/(kg.K)) | 544 | 574 | 636 | 645 | 762 | 779 | 921 | 1047 |
●GH3039 linear expansion coefficient
| I/℃ | 20-100 | 20-200 | 20-300 | 20-400 | 20-500 | 20-600 | 20-700 | 20-800 | 20-900 | 20-1000 |
| A/10-6 ℃ -1 | 11.5 | 12.4 | 13.2 | 13.5 | 13.8 | 14.3 | 14.9 | 15.3 | 15.8 | 16.4 |
Density of GH3039: ρ=8.3g/cm³. three. The electrical properties of gh3039: room temperature resistivity ρ=1.18×10-6Ω·M.
Magnetic properties of GH3039: The alloy is non-magnetic.
Chemical properties of GH3039: oxidation resistance of GH3039: oxidation rate of GH3039 and GH3039 in air medium after 100 hours
| I/℃ | 900 | 1000 | 1100 | 1200 |
| Oxidation rate/(g/(m2·h)) | 0.074 | 0.251 | 0.535 | 1.061 |
| I/℃ | 900 | 1000 | 1100 |
| Oxidation depth along grain boundary/mm | 0.020 | 0.052 | 0.068 |
GH3039 Mechanical Properties: Mechanical Properties specified in GH3039 Technical Standards
| Standard number | variety | Room temperature tensile properties | Tensile properties of 800℃ |
| σb/MPa | D5/% | F/% | σb/MPa | D5/% | F/% |
| GJB1952-1994 | Cold rolled plate | 735 | 40 | - | 245 | 40 | - |
| GJB2297-1995 | Aviation pipe | 685① | 40① | - | 245 | 40 | - |
| GJB3165-1998 | Stick | 735 | 40 | - | 245 | 40 | 40 |
| GJB3317-1998 | Hot rolled plate | 735 | 40 | 45 | 245 | 40 | 50 |
| GJB3318-1998 | Cold rolled belt | 735② | 40① | - | - | - | - |
| GB/T15062-1994 | Generally used pipes | 635 | 35 | - | - | - | - |
Note: ① Outer diameter > 30mm, wall thickness > 3.0mm, tube temperature σB ≥635mpa, δ5 ≥30%. ② δ≤0.25mm strip room temperature σB is greater than 660mpa, and the actual measured δ5.
Gh3039 Organizational Structure