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 Oil viscosity Oil near me Lubricants basics QHSE/Documentation Maintenance How Services Brake fluids Application facts Oil use Oil change Synthetic oil Best oil View all