Custom Coating provides manganese phosphate coating services for steel and iron components requiring processing to GM GMW15821 requirements. Our team reviews customer drawings, purchase orders, specification revisions, coating requirements, post-treatment needs, and testing expectations to support specification-driven production.
GM GMW15821 covers manganese-iron phosphate coatings applied to ferrous metal. The coating may be impregnated with oil or another specified supplemental coating depending on applicable requirements.
GM GMW15821 Manganese Phosphate Requirements
GM GMW15821 covers manganese phosphate coatings for applicable ferrous metal components. The coating is primarily associated with applications involving moving parts where rapid break-in and resistance to scoring or scuffing are important considerations. The specification also provides for minor corrosion resistance.
Because requirements can vary based on the component, application, drawing, and specification revision, Custom Coating reviews applicable customer requirements before production.
Processing requirements may include:
- Customer drawings and specifications
- Applicable GM specification revisions
- Component material and condition
- Required coating characteristics
- Coating weight requirements
- Oil or supplemental coating requirements
- Testing and inspection requirements
- Documentation and traceability requirements
Understanding GM GMW15821 Applications
Anti-Friction Performance
GM GMW15821 manganese phosphate is associated with applications where moving components benefit from improved break-in characteristics and resistance to scoring or scuffing.
Oil and Supplemental Treatments
The manganese phosphate coating may be impregnated with oil or receive another specified supplemental coating depending on applicable component and specification requirements.
Ferrous Components
GM GMW15821 applies to manganese phosphate coatings on applicable ferrous metal components, including steel and iron parts.
Our Approach to GM Specification Requirements
Processing for requirements associated with an OEM specification requires careful attention to the requirements associated with the component and its intended application.
Our review process includes:
- Customer drawings and specifications
- Purchase order requirements
- Specification revision levels
- Component material and condition
- Required coating characteristics
- Required coating weight
- Oil or supplemental treatment requirements
- Testing expectations
- Documentation and traceability requirements
By reviewing these requirements before production, our team can help determine the appropriate manganese phosphate processing approach for each project.
GM GMW15821 Manganese Phosphate Processing Capabilities
Custom Coating provides manganese phosphate processing for steel and iron components requiring functional surface treatment and specification-focused production support.
Our processing capabilities include:
- Automated manganese phosphate processing
- Processing for steel and iron components
- Customer-specified coating requirements
- Oil bath or specified post-treatment options
- Production support for industrial components
- Lot traceability
- Quality-focused processing
Custom Coating’s ISO 9001:2015 scope includes the application of oil-absorptive manganese phosphate coating onto iron and steel components for industrial customers.
Components and Applications
GM GMW15821 manganese phosphate processing may be relevant for applicable ferrous components requiring a functional phosphate coating as part of their specified finishing requirements.
The specification identifies typical applications involving moving components with relatively low corrosion requirements, including certain engine, transmission, and driveline components.
Custom Coating processes industrial components including:
- Gears
- Engine components
- Transmission components
- Driveline components
- Steel and iron parts with moving or contacting surfaces
- Other customer-specified industrial components
Why Work With Custom Coating?
Related Manganese Phosphate Services
GM GMW15821 Manganese Phosphate FAQs
GM GMW15821 is a General Motors specification covering manganese phosphate coatings applied to applicable ferrous metal components. The coating may be impregnated with oil or another specified supplemental coating.
The coating is primarily intended to support rapid break-in of moving parts without scoring or scuffing and provides minor corrosion resistance. Typical applications include certain engine, transmission, and driveline components.
Yes. The specification allows the manganese phosphate coating to be impregnated with oil or another supplemental coating when required.
The current edition states that GMW15821 no longer applies to threaded fasteners for new designs. Existing designs should be reviewed against the applicable requirements.
Providing customer drawings, applicable specifications and revision levels, component material information, coating requirements, post-treatment requirements, and testing or documentation requirements helps Custom Coating review your project before production.
Have a GM GMW15821 Manganese Phosphate Requirement?
Contact Custom Coating to discuss your GM GMW15821 requirements, component specifications, and production needs. Our team can review your project and provide a competitive quote.