GH4105 is a Ni-Co-Ci-based precipitation hardening deformed superalloy with a service temperature of 750ºC~950ºC. The alloy has high room temperature and high temperature strength and good oxidation resistance, but the hot working performance and welding performance are average. It is suitable for the manufacture of high-temperature parts such as aero-engine turbine blades and high-temperature bolts. The main products are hot-rolled bars and flat products, cold-drawn bars, profiles and rings.
chemical composition
Element C Cr Ni Co Mo Al Ti
Mass fraction/% 0.12~0.17 14.00~15.70 More than 18.00~22.00 4.50~5.50 4.50~4.90 1.18~1.50
Element Zr Mn Si P S Cu Ag
Mass fraction/% 0.070~0.150 ≤0.40 ≤0.25 ≤0.015 ≤0.010 ≤0.200 ≤0.0005
Elements Fe B Bi Pb
Mass fraction/% ≤1.00 0.003~0.010 ≤0.0001 ≤0.0010
Heat treatment system
The standard heat treatment system for each variety is:
1. Hot-rolled bars, flat products and forgings for blades, 1150ºC±10ºC×4h/AC+1030ºC±10ºC×16h/AC+700ºC±5ºC×16h/AC;
2. Cold drawn rod, 1125ºC±10ºC/AC+850ºC±10ºC×16h/AC, in which solution holding time: d≤3mm, 1 h; d>3mm~6mm, 2 h; d>6mm~40mm ,4h.
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