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, 3.7 and 4 deleted 1987 05 19 Released RD885100-128 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, Inc. Page
2、 1 of 2 ALUMINUM BRAZING SHEET - TUBE STOCK WSH-M2A138-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 one side. 2. APPLICATION This material was released originally for fabrication of core tubes in controlled atmosp
3、here brazed heat exchangers. 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 Clad Silicon 0.
4、10 max 9.5 - 10.5 Iron 0.25 max 0.5 max Copper 0.40 - 0.60 0.10 max Magnesium 0.20 - 0.30 0.05 max Manganese 0.90 - 1.2 0.10 max Chromium 0.05 max - Titanium 0.20 max - Zinc 0.05 max 0.10 max Each Other Element 0.05 max 0.05 max Total Other Elements 0.15 max 0.15 max Aluminum Balance Balance 3.3 BRA
5、ZE CLAD THICKNESS 10 +/- 2% of total material thickness specified on Engineering Drawing. 3.4 POST-BRAZE MICROSTRUCTURE After a standard exposure to a controlled atmosphere brazing cycle, material will exhibit an elongated grain structure in both rolling and transverse sheet direction. ENGINEERING M
6、ATERIAL SPECIFICATIONWSH-M2A138-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, Inc. Page 2 of 2 3.5 MECHANICAL PROPERTIES (Material as Supplied) (ASTM B 557M) H24 Temper - Ultimate Tensile Strength, min 193 MPa Yield Strength 165 - 193 MPa Elongation, min 7% 5. GENERAL I
7、NFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. The chemical composition values shown in Section 3.2 and the mechanical properties shown in Section 3.5 are mandatory; however, suppliers should aim to meet the desired target values shown below. These target values give rise to optimum conditions. Core Braze Clad Silicon - 9.8 Copper 0.50 - Magnesium 0.27 0.01 max Manganese 1.0 - Titanium 0.15 - Yield Strength 180 MPa
