1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Para. No. Revisions1978 06 12 Metricated, Renumbered and Retyped CF4H-RD 567168-211967 06 01 Released F6-3134 (Was XF-M6PX1)Page 1 of 2OXIDE COATING, SURFACE (BLUE-BLACK FINISH) ESF-M6P3-A1. SCOPEThe surface coating described
2、under this specification is an oxide finishcoating produced on iron and steel parts for the purpose of improvingappearance, corrosion resistance, and performance.2. APPLICATIONThis specification was released originally for a surface coatinggenerally applicable to spark plug shells.3. REQUIREMENTS3.1
3、 FINISH AND APPEARANCEThe surface of parts must be uniformly coated and have a blackand/or bluish appearing color, and a rust inhibitor applied.3.2 COATING THICKNESSThe surface coating is primarily a tight oxide formation withessentially no build-up on the part.3.3 CORROSION PROTECTIONParts shall be
4、 dipped in a rust inhibitor after treatment.3.4 CORROSION RESISTANCEThe parts shall be adequately protected against rust and corrosion.The part must be free from rust on significant surfaces afterexposure for 48 h in an atmosphere of 95 - 100 % relative humidityat 38 +/- 1 C.3.5 SUPPLIERS RESPONSIBI
5、LITYMaterial supplied to this specification must be equivalent to thatoriginally approved. Changes in formulation or processing shallnot be made without prior approval as described in SupplierProcedure I-A.4. APPROVAL OF SUPPLIERSSuppliers to this specification must be approved by the affected produ
6、ctengineering office. Procedure for gaining approval of a specificmaterial to a new/existing ES-M specification is contained in SupplierProcedure I-A. Approved new suppliers will be added to the EngineeringMaterials Approved Source List.ENGINEERING MATERIAL SPECIFICATIONESF-M6P3-APage 2 of 25. GENER
7、AL INFORMATIONThe material data included herein is for information only and is not arequirement for the supplier.5.1 METHODThis specification is not intended to limit in any way the formulaor procedure of the oxidizing treatment. Any process resulting ina satisfactory surface appearance meeting above treatments will beapproved. Fostoria plant ES-580-para “G“ process method has beenfound satisfactory.
