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GH3128
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China grade: GH3128/GH128 nickel-based superalloy
Russian brand: ЭИ 435/XH78T
Overview of Gh3128 Nickel-based Superalloy
Gh3128 is a nickel-based alloy, tungsten, molybdenum solid solution strengthening, boron, cerium, zirconium grain boundary strengthening. It has high plasticity, high creep rupture strength, good oxidation resistance, stamping and welding performance. Its comprehensive performance is better than GH3044 and GH3536. It is suitable for the manufacture of high temperature parts such as flame tube, afterburner shell and regulating plate of aeroengine combustion chamber working at 950 ℃ for a long time. The main products are cold-rolled plates, and hot-rolled plates, bars, forgings, wires and pipes can also be supplied.
Gh3128 material grade: Gh3128(gh128, red star 11).
Gh3128 similar brands.
Gh3128 Material Technical Standard
● Chemical composition of Gh3128
C≤ Si≤ Mn≤ P≤ S≤ Cr≥ Ni≥ Mo≥ With 0.05 0.80 0.50 0.013 0.013 19.0-22.0 Allowance 7.50-9.0 Other N≤ Al≤ Ti≤ Fe≤ b≤ Zr≤ W≤ Ce≤ - 0.40-0.08 0.40-0.80 0.20 0.005 0.06 7.50-9.0 0.05 Note: B, CE and Zr are added according to the calculated amount.
Gh3128 heat treatment system: factory solid solution temperature 1140~1180 ℃, air cooling. The solution treatment was carried out at 1200 ℃, and its high temperature performance was tested.
Gh3128 specifications and availability: cold rolled sheet δ0.8~4.0mm, hot rolled sheet δ4~14mm, cold drawn steel wire d0.3 ~ 10mm. Cold-rolled plate and hot-rolled plate are supplied after solid solution and pickling; welding wire is supplied under cold drawing, semi-hard or solid solution and pickling conditions.
GH3128 melting and casting process: non-vacuum or vacuum induction furnace plus electroslag remelting.
Application profile and special requirements of Gh3128: The alloy is suitable for the manufacture of aero-engine combustion chamber and afterburner parts working below 950 ℃, and the application effect is good.
Physical and chemical properties of Gh3128
● Thermal performance of Gh3128
(1) The melting temperature range of Gh3128(gh128) is 1340~1390 ℃.
(2) Gh3128(gh128) thermal conductivity
θ/℃ 18-100 18-200 18-300 18-400 18-500 18-600 18-700 18-800 18-900 18-1000 α/10-6 ℃-1 11.25 11.86 12.68 12.80 13.37 13.68 14.46 15.19 15.66 16.29 ● Gh3128 coefficient of linear expansion
Thermal Diffusivity of Gh3128
θ/℃ 18-100 18-200 18-300 18-400 18-500 18-600 18-700 18-800 18-900 18-1000 α/10-6 ℃-1 11.25 11.86 12.68 12.80 13.37 13.68 14.46 15.19 15.66 16.29 ● Density of Gh3128: ρ = 8.81g/cm³.
Gh3128 electrical properties: resistivity table.
Gh3128 magnetic properties: non-magnetic alloy.
θ/℃ 25 100 200 300 400 500 600 700 800 900 Q/(10-6m2 /s)) 2.30 2.49 2.78 3.08 3.39 3.69 3.88 4.16 3.92 4.16 θ/℃ 17 850 900 950 1000 1050 1100 1150 P/ (10-6Ω.m)) 1.37 1.42 1.39 1.40 1.39 1.38 1.38 1.39 GH3128 chemical properties
● GH3128 oxidation resistance: the oxidation rate of the alloy after 100h in air medium
θ/℃ 900 1000 1100 Oxidation rate/(g/(㎡ · h)) 0.055 0.236 0.269 ● Corrosion resistance: marine gas corrosion performance
Test system Specimen size/mm Weight loss/(mg/cm2) Macro inspection 900 ℃,27h 1.5 × 15 × 30 2.2 Surface intact Note: The test conditions are that the ratio of air to fuel is 39:1, the concentration of salt atmosphere is 106 × 10-6, and the fuel is 0# diesel oil.
GH3128 Mechanical properties
● Performance specified in GH3128 standard
Variety Sample state θ/℃ Tensile properties Persistent Performance Kb/MPa D5/% σ/MPa D/mm t/h D5/% Not less hot rolled plate Delivery Status 20 735 40 - - - - Delivery status +1200 ℃, air cooling 950 175 40 - - - - cold rolled sheet Delivery Status 20 735 40 - - - - Delivery status +1200 ℃, air cooling 950 175 40 Specification I 54 > 1.2 ≤ 1.2 ≥23. ≥20 Actual measurement Specification II 39 ≥ 1.5 <1.5 ~ 1.0 ≤ 1.0 ≥ 100 ≥ 80 ≥ 70 Actual measurement Actual measurement Note: The initial durability test shall be carried out according to the first specification. If the test fails according to the first specification, the new test can be carried out according to the second specification.
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GH3128
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