1、 ENGINEERING MATERIAL SPECIFICATION Material Name Date Action Revisions 2011 03 01 N Status N status ESB-M4D240-A. No replacement named A. Pan 1991 17 09 Inactive B suffix inactivated 1966 11 29 Released ESB-M4D240-A AW1-496 Page 1 of 6 NYLON (TYPE 11) COATING NOT TO BE USED FOR NEW DESIGN ESB-M4D24
2、0-A INACTIVE ESB-M4D240-B 1. SCOPE: The materials defined by this specification are Type 11 nylon coatings. Two types are defined as follows: Type I Standard particle size for fluidized bed coating. Type II Fine particle size suitable for electrostatic deposition. 2. APPLICATION: This specification
3、was released originally for materials used to provide tough, low friction, corrosion and abrasion resistant coatings with good adhesion, for parts such as metal window guide clips (Type I) and spring sleeves on accelerator cables (Type II). 3. REQUIREMENTS: All requirements apply to both Type I and
4、Type II unless otherwise noted. If no type is specified on drawing, Type I is understood. All tests are applicable to actual parts. However, when tests cannot be performed due to part size or shape limitations, laboratory panels may be substituted. Test panels, 4 x 4 in (100 x 100 mm) shall be proce
5、ssed concurrently with metal parts and shall be representative of parts with respect to substrate, treatment, method of application, baking schedule, and film thickness. 3.1 SUBSTRATES As specified on engineering drawing. 3.2 SUBSTRATE SURFACE PREPARATION Parts shall be degreased, chemically cleaned
6、 or shot blasted and phosphated prior to applying a primer system which can cure in the absence of oxygen. Other surface preparations may be used if approved by the affected product engineering materials office. ENGINEERING MATERIAL SPECIFICATION ESB-M4D240-A ESB-M4D240-B Page 2 of 6 3.3 BASE RESIN
7、3.3.1 Color ESB-M4D240-A Black or as specified on engineering drawing ESB-M4D240-B Natural 3.3.2 Specific Gravity (ASTM D 792) The specific gravity will vary with each color, since pigment density is variable. Natural 1.04 - 1.06 Black 1.05 - 1.07 Other Colors As specified on engineering drawing 3.3
8、.3 Particle Size, max (ASTM D 1921) Type I 300 micrometre Type II 60 micrometre 3.3.4 Water Absorption, max 0.65% (ASTM D 570) 3.3.5 Infrared Spectrophotometry and/or Thermal Analysis Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this s
9、pecification. The curves established for initial approval shall constitute the reference standard and shall be kept on file at Central Laboratory. All samples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified on the master curve.
10、ENGINEERING MATERIAL SPECIFICATION ESB-M4D240-A ESB-M4D240-B Page 3 of 6 3.4 FILM PROPERTY Type I Type II 3.4.1 Thickness 0.015 +/- 0.005 in 0.007 +/- 0.0015 in (FLTM BI 17-1 or (0.38 +/- 0.13 mm) (0.18 +/-0.04 mm) microscope on cut cross section) Unless otherwise specified on engineering drawing 3.
11、4.2 Gloss As specified on engineering drawings (FLTM BI 10-1, 60 deg glossmeter) Dull 10 - 30 Not applicable Glossy 70 - 90 Not applicable 3.4.3 Impact Strength, Gardner No cracking or loss of adhesion (FLTM BI 8-1, 30 in-lb (3.4 J) impact) Test Method: Condition test fixture and sample in cold box
12、maintained at -29 +/- 1 C for 4 h and test in cold box. 3.4.4 Scuffing Resistance, weight loss, max 100 mg (FLTM BN 8-4, “B“ head, 10 000 cycles) 3.4.5 Friction Index, max 1.5 lb (6.7 N) (Type I only) Test Method: Use FLTM BP 3-2 for fixture, cross-head speed, chart speed and load range. Mount a coa
13、ted 4 x 4 in (100 x 100 mm) test panel or suitable part on the aluminum plate with “C“ clamps. Attach a 1 x 1 in (25 x 25 mm) square of #10 cotton duck to one side of a 1 x 1 x 1 in (25 x 25 x 25 mm) cube of steel, weighing 125 +/- 5 g with double coated adhesive tape or a suitable adhesive. Place t
14、he cube on the coated panel with the cotton duck against the coated surface. Attach the wire or non-stretch cord to the steel cube, through the pully on the back edge of the plate, and into the jaw of the Instron unit. Place the 5 lb (2.3 kg) weight on the steel cube, start test with no tension, and
15、 allow to run at least 2 in (50 mm) on the coated panel. Note: The cube shall remain parallel to the pulling direction throughout the test. Record the friction in lb (N) (maximum reading). 3.4.6 Accelerated Aging ENGINEERING MATERIAL SPECIFICATION ESB-M4D240-A ESB-M4D240-B Page 4 of 6 The coating sh
16、all protect the substrate from corrosion, and shall not crack, shrink, blister, soften, or lose adhesion when separate parts are exposed to the following conditions. Salt Spray, min 240 h (FLTM BI 3-1) Water Immersion, min 240 h (FLTM BI 4-1) Heat 1 h Test Method: Age in air at 121 +/- 1 C in a mech
17、anical convection oven for 1 h, remove and allow to cool at 23 +/- 2 C for 1 h. Save all parts for aged adhesion tests in para. 3.4.7. 3.4.7 Coating Adhesion to Substrate As Received No failure After Aging per para. 3.4.6 No failure Test Method: Cut 2 parallel lines through the film 3/32 +/- 1/32 in
18、 (2.38 +/- 0.79 mm) apart. Cut across one end of the parallel cuts, then cut the film from the substrate for a distance of approximately 1/4 in (6.4 mm). Grasp the free film end between the knife blade and a finger and attempt to pull the film from the substrate. Note: Satisfactory adhesion is indic
19、ated when coating breaks while resisting removal or stripping from the substrate. Any peeling from substrate shall constitute a failure. 3.4.8 Physical Performance on Finished Product When required, shall be as specified on the affected part or product engineering drawing, or in the affected part or
20、 product engineering performance specification. 3.5 ESB-M4D240-B FLAMMABILITY 3.5.1 In order to comply with Federal Motor Vehicle Safety Standard No. 302, the materials, portions of components, and composites shall not burn, or transmit a flame across its surface, at a rate of more than 4 in (101 mm
21、) per minute. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM BN 24-2. 3.5.2 Performance - Environmental Aging All materials, portions of components, and composites defined by this specification that have not been treated, ENGINEERING MATERIAL SPECIF
22、ICATION ESB-M4D240-A ESB-M4D240-B Page 5 of 6 modified or reformulated and exceed a maximum burn rate of 3.0 in (76 mm) per minute as specified by the Flammability Lot Sampling Plan of FLTM BN 24-2, must be evaluated for permanency of the materials flame retardant properties per ESB-M25P3-A accordin
23、g to the accelerated environmental aging requirements applicable to the basic material category of this particular specification. Any material, portions of components, and composites defined by this specification that have been treated, modified or reformulated to conform to Flammability Lot Samplin
24、g Plan of FLTM BN 24-2, regardless of maximum burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per ESB-M25P3-A applicable to the basic materials category of this particular specification. 3.5.3 Flamma
25、bility Test Program Material, portions of components, and composites governed by this specification must also comply with the requirements of ES-D3AB-11014-AA. 3.6 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation
26、or processing shall not be made without prior approval as described in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specifica
27、tion is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List. 5. GENERAL INFORMATION: This data is for information only and is not a requirement. 5.1 FILM PROPERTIES 5.1.1 Tensile Strength, min 5000 psi (34.5 MPa) (ASTM D 638) 5.
28、1.2 Elongation, min 15% (ASTM D 638) 5.1.3 Hardness - Durometer “D“ 75 - 80 (ASTM D 2240, free film) 5.2 PRIMER PROPERTIES ENGINEERING MATERIAL SPECIFICATION ESB-M4D240-A ESB-M4D240-B Page 6 of 6 5.2.1 Color Amber 5.2.2 Solids by Weight, min 0.9% 5.2.3 Viscosity, #1 Zahn cup 26 s 5.2.4 Weight 7.3 lb/gal (0.87 kg/L) 5.2.5 Specific Gravity 0.876 (ASTM D 1475) 5.2.6 Flash Point +7 C (ASTM D 56) 5.2.7 Average Dry Film Thickness 0.001 in (0.025 mm) 5.2.8 Drying Time (23 +/- 2 C) 5 min
