1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 07 09 N-STATUS No Replacement Named B. Curtiss, NA 2003 09 15 Revised Para 3.0 inserted; para 3.1, 3.6 and 4 deleted 1987 05 19 Released RD885100-129 C.F. Carter Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, In
2、c. Page 1 of 2 ALUMINUM BRAZING SHEET - HEADER STOCK WSH-M2A139-A 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 fabrication of headers, tanks and b
3、affles for vacuum brazed aluminum heaters. 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 PERCENTAGE (See 5.1) Core Braze C
4、lad Silicon 0.6 max 9.2 - 10.2 Iron 0.8 max 0.5 max Copper 0.40 - 0.60 0.10 max Magnesium 0.10 max 1.25 - 1.75 Manganese 0.8 - 1.3 0.10 max Bismuth - 0.05 - 0.15 Chromium 0.05 max - Titanium 0.11 - 0.20 - Zinc 0.10 max 0.10 max Each Other Element 0.05 max 0.05 max Total Other Elements 0.15 max 0.15
5、max Aluminum Balance Balance 3.3 BRAZE CLAD THICKNESS .091 mm to .137 mm (each side) 3.4 MECHANICAL PROPERTIES (Material as Supplied) (ASTM B 557M) 0 Temper - Ultimate Tensile Strength 117 - 165 MPa Yield Strength, min 45 MPa Elongation, min 20% 3.5 GRAIN SIZE (Material as Supplied) 3.5 or finer (AS
6、TM E 112) ENGINEERING MATERIAL SPECIFICATIONWSH-M2A139-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, Inc. Page 2 of 2 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. The c
7、hemical composition and clad thickness values in section 3 are mandatory, however, suppliers should aim to meet the desired target values as shown below. These target values give rise to optimum conditions: Chemical Composition Percentage Core Braze Clad Silicon 0.20 9.8 Copper 0.50 - Magnesium - 1.5 Manganese 1.0 - Bismuth - 0.08 Titanium 0.15 - Braze Clad Thickness .114 mm
