1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No known use. No replacement named B. Curtiss, NA 2003 09 23 Revised Para 3.0 inserted; para 3.1, 3.7 and 4 deleted 1994 12 31 NGA1E10370437012 Released C.C. Gray, C. Sales Printed copies are uncontrolled Copyright 2009, Fo
2、rd Global Technologies, Inc. Page 1 of 2 ALUMINUM BRAZING SHEET, CONDENSER FIN STOCK WSH-M2A157-A1 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an aluminum sheet clad with brazing alloy on both sides. 2. APPLICATION This material was released originally for fa
3、brication of fins in brazed aluminum condensers. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION (Weight %) (ASTM E 227) Cor
4、e Braze Clad Silicon 0.25 max 8.5 - 9.5 Iron 0.45 max 0.50 max Copper 0.05 max 0.05 max Magnesium 0.03 max 0.03 max Manganese 1.00 - 1.25 0.05 max Chromium 0.03 - 0.10 0.03 max Zinc 0.90 - 1.40 0.90 - 1.40 Titanium 0.05 max 0.05 max Each Other Element 0.05 max 0.05 max Total Other Elements 0.15 max
5、0.15 max Aluminum Balance Balance 3.3 BRAZE CLAD THICKNESS Material will be clad on both sides of the sheet at 10 +/- 2% of the total material thickness specified on the Engineering Drawing. ENGINEERING MATERIAL SPECIFICATIONWSH-M2A157-A1 Printed copies are uncontrolled Copyright 2009, Ford Global T
6、echnologies, Inc. Page 2 of 2 3.4 MECHANICAL PROPERTIES (Material as supplied) (ASTM B 557M) H14 Temper Ultimate Tensile Strength 155 - 195 MPa Elongation, 50 mm 1% min The temper as supplied should be such that core material dissolution by the braze material is kept to a minimum during the braze pr
7、ocess. 3.5 DIMENSIONAL TOLERANCES The allowable deviation of a side edge of the material from a straight line shall not exceed 1 mm for 1000 mm length strip of material. 3.6 LOT CONTROL The supplier shall prepare, for each lot of every shipment, a certificate of inspection for items 3.2 through 3.5 of this specification. This information will be forwarded to the appropriate Ford Manufacturing Engineering Activity.
