An influence of aging temperature on manifestation of elastic anomalies in 45NKhT alloy is studied. The anomalous deviations of elasticity modulus may be differentiated with regard for a contribution of magnetoelasticity and structural component, respectively reflecting the effect of ferromagnetic ordering and structural metastability. The given alloy is characterized by noticeable dependence of thermoelastic coefficient upon the aging temperature, what permits to regulate a degree of anomaly manifestation.