GH2696 (GH696) age-hardening iron-based superalloys 1. Grade explain: (GB / T14992-1994) new grades: GH2696 old number: GH696 2.GH2696 (GH696) Chemical composition: Chemical composition (mass fraction) (%) new grade C Cr Ni W M0 A1 Ti Fe Nb VB Ce Mn Si PS other GH2696 ≤O.10 10.O ~ 12.5 21.0 ~ 25.0 3.50 ~ 4.50 1.00 ~ 1.60 ≤0.80 2.60 ~ 3.20 margin ≤O.O2O ≤O. 020 ≤0.60 ≤O.60 ≤0.020 ≤O.010 Note: The table B, Zr, Ce content is added in an amount calculated, may Determination (unless the product standard or protocol, contract otherwise specified) 3. GH2696 (GH696 ) Mechanical Properties Tensile strength σb (MPa): ≥800 Conditions yield of: σ0.2 (MPa): ≥680 Elongation δs (%): ≥4.5 section shrinkage ψ (%): ≥8 4. GH2696 ( GH696) Key Features: GH2696 (GH696) is the Fe-Ni-Cr-based precipitation strengthening wrought superalloy, long time temperature below 650 ℃, short-term temperature up to 750 ℃. GH2696 (GH696) alloy having a high yield strength, rupture and creep strength, elasticity and good high temperature properties, resistance to gas corrosion and processing of plastic. GH2696 (GH696) alloy of chromium and nickel content is relatively low, so the anti-oxidation temperature is only about 800%, but with dispersion strengthening phase forming elements (v, A1, Ti) is relatively high, the solid solution strengthening the matrix may be formed compound phase, so commonly used in the form of a solid solution heat treatment and aging treatment. By solution treatment, the GH2696 (GH696) solid solution strengthening alloy; aging treatment, can strengthen the alloy phase precipitation of fine [VC, Ni3A1, Ni3Ti, Ni3 (A1 Ti?)], Thereby increasing temperature and high temperature strength. Organization after solution and aging treatment of austenite + diffusion compound. 5. GH2696 (GH696) Application examples: GH2696 (GH696) suitable for making long-term work in the following 650 ℃ and the turbine and compressor fasteners, disc member and work blades, turbine casing, the annular parts, and at 400 ℃ ~ 650 ℃ Operating cylindrical coil spring.