Cuprobond
A trade name for a non-electrolytic process for deposition of metallic copper on iron or steel prior to cold working. It has a wide operating temperature from room temperature up to (82°C) 180°F. Freshly pickled steel is washed with water and immersed in the Cuprobond solution (Cuprobond chemicals dissolved in a mixture of water and sulfuric acid) until the desired weight of copper has been deposited.