GH4708 is a Ni-Cr-based precipitation hardening deformed high-temperature alloy with a service temperature below 850°C. The alloy is comprehensively strengthened with elements such as tungsten, molybdenum, aluminum and titanium. It has high oxidation resistance, stable structure, and satisfactory cold and hot processing forming and welding process performance. The surface of GH4708 alloy can be treated with Al infiltration, passivation Ag plating and Cr plating. No harmful phases precipitated after the alloy was aged at 800°C for 1000h.
Specifications | In stock, can be customized according to customer requirements |
Form | Bar，Plate |
Classification | Superalloy |
Alloy | C | Cr | Ni | Co | Mo | Al | Ti | Fe | W | Mg | B | Zr | Ce | Si | Mn | P | S | Cu |
GH4708 | 0.05-0.10 | 17.5-20.0 | Balance | ≤0.50 | 4.00-6.00 | 1.90-2.30 | 1.00-1.40 | ≤4.00 | 5.50-7.50 | - | ≤0.008 | - | ≤0.030 | 0.40 | 0.50 | 0.015 | 0.015 | - |
Alloy status | Tensile strengthEbMPa2 | yield strength RP0.2 N/mm | Elongation A/%≥ | HBS |
solution treatment | ≥930 | ≥620 | ≥20% | ≤295 |
GH4708 alloymainly includes hot-rolled and forged bars, plates, wires, rings and forgings.
GH4708 alloy rod is suitable for manufacturing load-bearing parts that operate below 850°C in different parts of aircraft engines such as compressors, combustion chambers, turbines, and adjustable nozzles.
GH4708 alloy barsare widely used in high-temperature load-bearing parts such as mounting edges, eccentric rings, half rings, sealing ring seats, low-pressure turbine outer rings, nozzle housings, tie rods, pins, and base plates of aero engines.
GH4708 alloy barscan be used to manufacture high-temperature components of industrial gas turbines, such as rotor blades, combustion chambers, etc.
GH4708 alloy rods can also be used in high-temperature equipment manufacturing in petrochemical, nuclear industry, and other fields.
The manufacturing process of stainless steel and alloys involves multiple steps to transform raw materials into flat,rectangular sheets or plates made of stainless steel and alloys. Here are a few key steps for stainless steel and alloys:
Molten stainless steel and alloys are cast into large ingots or billets through a casting process.
During the hot rolling process,the thickness of the steel ingot is gradually reduced and elongated to form long strips or coils.
Annealing involves heating stainless steel and alloys to a specific temperature and then slowly cooling it.
Cold rolling is carried out through rolling mills to reduce thickness to meet customer specifications.
Wuxi Walmay Metal Co,Ltd is a comprehensive processing group of Alloy Steel、Forged Parts Fitting、Titanium Alloy、Stainless Steel、Special Welding Wireseries， and more than 800 specifications.
Our group has been engaged in the domestic and global market for more than ten years with rich steel experience and can offer professional advice for customers inapplications with different materials.
Machine cutting
Sheet cutting
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Dynamic waterjet cutting
sawing
Plank leveling
polishing
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laser cutting
production cutting
Long product cutting
Bar and structural cutting
polishing
Heat treatment and annealing: Wuxi Walmay Metal can heat treat certain 400 series stainless steels.
Material Reliability Identification (PMI): Wuxi Walmay Metal can complete this testing in-house.
Ut Testing: Ultrasonic testing (UT) uses high-frequency sound energy to inspect and measure stainless steel products.
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