Turbine Blade Steels

Blade steel is the key material in steam turbines and gas engines. The blades are affected by high-temperature and high-pressure steam, and they are subjected to large bending moments during work. The moving blades in high-speed operation are also subjected to high centrifugal force; the blades in the wet steam zone, especially the final stage, are subjected to electrochemical corrosion. And water drop erosion. The moving blade also bears a very complicated exciting force. According to the different working environment and usage requirements, the general static blades are made of Cr13 stainless steel; the general moving blades are made of Cr13 improved stainless steel with Ni, W, Mo, V and other elements; the last one and two grades are generally made of precipitation hardening type due to the harsh working environment. Stainless steel. Higher temperature requirements for ultra-supercritical, the temperature reaches 620 ° C working environment also requires Co-W alloy materials or higher requirements.
X4CrNiMo16-5-1, X5CrNiCuNb16-4, X10CrNiMoV12-2-2, X12CrNiMoV12-2, X12CrMoWVNbN10-1-1, X12CrNiMo12, X18CrMoNbVN11-1+QT, X22CrMoV12-1, X20Cr13, X19CrMoNbVN11-1, B50A789(GTD-450), B50A789G, B50A790(403Cb), B50A947A4, B50A947B2, B50A948, B50A789G, 10705BP, 10705BAA/10705AG, 10705BU, 10705MBU, K11C64A, K11C79E, K11C77E, K11C88A, KT5325BS12, KT5330AS0, KT5331AS0, KT5300AS5, KT5301HS20