What can cause staining after stamping? There are different kinds of staining. In forming operations, three main causes can be found: corrosion, annealing and compatibility between the oil and the metal. You must have JavaScript enabled to use this form. Is this useful ? Yes No Do you still need help ?Get in touch with us.Contact us Thank you for your feedback! Question Submit Main topics Application facts Best oil Brake fluids How Lubricants basics Maintenance Oil change Oil near me Oil use Oil viscosity QHSE/Documentation Services Synthetic oil View all