1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver 5 2015 01 30 A2 N Status A2 no future usage or replacement U. Mueller, EU 2008 04 11 Activated Added WSS-M7C80-A4; Revised 3.5.1, 3.5.2, 3.5.4, 3.6.3, 3.6.4 3.6.5, 3.7.1, 3.8.4, 3.8.5; Deleted 3.4 no blisters, no slipping of the wax or an
2、y damages of the film allowed. Light re-emulsification may be accepted if reversible within 24 h after test end. 3.8.4 Resistance Against High Temperature no flow (1 h at 80 +/- 2 C) Test Method: Spray wax to one half of an electrocoated test panel. Mark the edge and place the panel vertically in a
3、convection oven, wax side up. Evaluation for flow after 1 hour. 3.8.5 Resistance Against Low Temperature -30 C (ASTM D 522, Method B) Test Method: Prepare test panels with 40 - 50 and 70 - 80 micrometer film thickness and place them in a cold box for 24 h, together with a mandrel of 30 mm diameter.
4、While in the cold box, bend the panels 180 C over the mandrel. Evaluation: No cracking or chipping allowed. ENGINEERING MATERIAL SPECIFICATION WSK-M7C80-A2 WSK-M7C80-A4 Copyright 2015, Ford Global Technologies, LLC Page 4 of 5 3.9 INFLUENCE ON PAINTED SURFACES Substrates: Ford Standard steel panels
5、and plastic panels or actual production parts, painted with current production as well as repair top coats; white and silver metallic. Test Method: Spray wax on one half of each specimen and place them for 16 h in an oven at 45 +/- 2 C. After test end remove the wax with a cloth and a suitable solve
6、nt per para 3.7.4. Evaluation: The wax must not strain, soften, lift, or otherwise degrade current production or repair paint materials. 3.10 STAINING OF UNPAINTED PLASTIC BUMPER MATERIAL (only if applicable) Substrates: Samples from white and dark grey current production bumper material. Test Metho
7、d: Spray wax on one half of each specimen and place them for 16 h in an oven at 45 +/- 2 C. After test end remove the wax with a cloth and a suitable solvent per para 3.7.4. Evaluation: The wax must not stain, soften, or otherwise degrade the plastic substrate. 3.11 INFLUENCE ON UNDERBODY STONE CHIP
8、 PROTECTION MATERIAL (ASTM D 968) Substrates: Prepare electrocoated test panels with current production stone chip protection material for the underbody application and film build as required in the relevant material specification. Test Method: Spray wax on one half of the specimens and age them for
9、 7 days at 23 +/- 2 C. Perform abrasion tests as required in the specification of the stone chip coating material. After test end remove the wax with a cloth and a suitable solvent per para 3.7.4. Evaluation: The wax under investigation shall not deteriorate the resistance of stone chip protection u
10、nderbody coatings. ENGINEERING MATERIAL SPECIFICATION WSK-M7C80-A2 WSK-M7C80-A4 Copyright 2015, Ford Global Technologies, LLC Page 5 of 5 3.12 INFLUENCE ON PLASTIC AND RUBBER ASSEMBLY PARTS Substrates: Specimens of rubber or plastic parts placed in the spraying area during application such as: brake
11、 hose, fuel line or heater hose. Test Method: Spray wax onto the test specimens and age for 7 days at 23 +/- 2 C. After test end wipe off the test compound with a cloth and a suitable solvent per para 3.7.4. Compare volume and hardness of the test specimens with untreated parts. Evaluation: The mate
12、rial under test shall not deteriorate properties of rubber or plastic assembly parts. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. 5.1 MATERIAL REFERENCE All related materials used for approval of wax according to this specification, e.g. substrate materials, paint materials, solvents, etc. as well as the application parameter shall be noted in the Initial Sample Report of the wax.
