GH3030 solid solution strengthened superalloy is an early developed 80Ni-20Cr solid solution strengthened superalloy with simple chemical composition, satisfactory thermal strength and high plasticity below 800 °C, and good resistance to oxidation, thermal fatigue, Cold stamping and welding process performance. The alloy is single-phase austenite after solution treatment, and the structure is stable during use.
The main product is cold rolled sheet, but also deformed products such as bar, ring, wire and tube can be supplied. It is mainly used for turbine engine combustion chamber components that work below 800 °C and other high-temperature components that require oxidation resistance below 1100 °C but bear small loads. [1] GH3030 has strong thermal processing and cold processing properties, and is used to make various chemical equipment and accessories.
1.1, material grade
GH3030 (GH30)
1.2, similar grades
ЗИ435, XH78T (Russia).
1.3. Technical standards of materials
GJB 1952-1994 "Specification for high temperature alloy cold-rolled sheet for aviation"
GJB 2297-1995 "Specification for cold drawn (rolled) seamless pipes of high temperature alloys for aviation"
GJB 2611-1996 "Specification for Cold Drawn Bars of High Temperature Alloys for Aviation"
GJB 2612-1996 "Specification for cold drawing of high temperature alloys for aviation"
GJB 3020-1997 "Specification for superalloy ring blanks for aviation"
GJB 3317-1998 "Specification for high-temperature alloy hot-rolled sheet for aviation"
GJB 3318-1998 "Specification for Cold Rolled Strips of High Temperature Alloys for Aviation"
GJB 3165-1998 "Specification for hot-rolled and forged bars of superalloys for aerospace load-bearing parts"
GJB 3167-1998 "Specification for cold drawing of superalloys for cold heading"
GB/T 15062-1994 "Superalloy tubes for general use"
Chemical composition
C Cr Ni Ti Al Fe Mn Si P S
≤0.12 19.0~22.0 margin 0.15~0.35 ≤0.15 ≤1.5 ≤0.7 ≤0.8 ≤0.03 ≤0.02
Note: 1. According to the standard of bar and ring blank, Cu≤0.20%.
The standard for hot-rolled sheet, cold-rolled sheet, cold-rolled strip, pipe, wire and cold-drawn wire for cold heading stipulates that Fe≤1.00%, P≤0.015%, S≤0.010%, Pb≤0.001%, Cu≤ 0.007%.
Heat treatment system
The solution temperature is 980~1020ºC, the cooling method is air cooling for hot-rolled sheet, cold-rolled sheet and ring blank, water-cooling or air-cooling for cold heading wire and cold-drawn bar, and water-cooling for pipe.
Variety Specifications and Supply Status
Various specifications of deformed products can be produced, and bars and ring billets are delivered without heat treatment; hot-rolled sheets, cold-rolled sheets and pipes are supplied after solution and pickling; welding wires are in cold-drawn, solid-solution and pickling states Or semi-hard state in disk shape delivery; cold heading wire in solid solution, pickling state into disk shape or straight strip, solid solution straight strip polished or cold drawn state delivery; pipe in solid solution, acid Delivery in washed state; cold drawn rods are delivered in annealed, annealed and pickled, annealed and polished or cold drawn.
Melting and casting process
Electric arc furnace melting or electric arc furnace melting plus electroslag remelting or vacuum arc remelting, non-vacuum induction furnace plus electroslag melting or vacuum arc furnace remelting or vacuum duplex process.
Application overview and special requirements
The alloy has been tested in aero-engines for a long time and is mainly used for combustion chamber and afterburner parts and parts such as casing mounting edges.
chemical properties
Thermal performance
Melting temperature range 1374~1420ºC
density ρ=8.4g/cm3
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