PURPOSE: To provide an inorganic composition for repairing damages of various equipment, containers, etc., to be put in service at high or low temperatures, enabling and repair to be performed readily in a short time and at low cost, comprising metallic powder, metal oxide, metal carbonate and alkali silicate.

CONSTITUTION: The objective composition comprising (A) metallic powder (pref. with a size 1W500μm; e.g., of Al, W, Mo, Fe, Cr, Ni, Cu), (B) metal oxide (e.g., Al2O3, TiO2, Cr2O3, Fe2O3, Fe3O4, MgO, 3Al2O3.2SiO2), (C) metal carbonate (e.g., CaCO3, Na2CO3, MgCO3), and (D) alkali silicate (e.g., sodium silicate).