1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2011 06 15 N Status No replacement named S. Ryzyi, NA 2003 09 18 Revised Para 3.0 inserted; para 3.1, 3.6 and 4 deleted 1995 12 21 Activated N. Kurtycz Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, Inc. Page 1 of 2
2、 ALUMINUM BRAZING SHEET - BRAZE ALLOY CLAD WSS-M2A144-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an aluminum sheet clad with brazing alloy on one or both sides. 2. APPLICATION This material was released originally for fabrication of core tubes in flux bra
3、zed automotive heaters when clad on one side, or headers/tanks/baffles for flux brazed aluminum heaters when clad on both sides. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production
4、Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION PERCENTAGE (weight percent) 3.2.1 Core Composition The upper and lower limits of each controlled element must be established by the suppliers and presented prior to source approval. Samples submitted for approval shall represent this established c
5、hemistry. Upon successful testing of the submitted sample to all requirements of this specification, the allowable chemical composition range will be detailed on the Engineering Materials Approved Source List. No changes in chemical composition range shall be made without prior approval by Ford Moto
6、r Company. 3.2.2 Braze Cladding Composition (See Sec. 5) Silicon 9.2 - 10.4 Iron 0.5 max Copper 0.10 max Magnesium 0.05 max Manganese 0.05 max Zinc 0.10 max Each Other Element 0.05 max Total Other Elements 0.15 max Aluminum Balance ENGINEERING MATERIAL SPECIFICATION WSS-M2A144-A2 Printed copies are
7、uncontrolled Copyright 2011, Ford Global Technologies, Inc. Page 2 of 2 3.3 BRAZE CLAD THICKNESS Percent of total material thickness as specified on the engineering drawing: Both Sides Clad One Side Clad (i.e.-headers, tanks, baffles) (i.e.-tubes) 7.5 +/- 1.5% 10 +/- 2% 3.4 MECHANICAL PROPERTIES (Ma
8、terial as Supplied) (ASTM B 557M) O Temper (i.e.-headers, H14 Temper* tanks, baffles) (i.e.-tubes) Ultimate Tensile Strength 117 - 165 MPa 165 - 221 MPa Yield Strength, min 45 MPa 145 MPa Elongation, min 20% 4% *Note: These properties apply only to material thicknesses from 0.20 - 0.63 mm. 3.5 GRAIN
9、 SIZE (Material as Supplied) 3.5 or finer (ASTM E 112) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. The chemical composition values as approved per section 3.2.2 are mandatory, however, suppliers should aim to meet the desired target value of 9.8 for silicon. This target value gives rise to optimum conditions.
