1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 09 11 Revised Para 3.0 inserted; para 3.4 and 4 deleted 1978 08 11 Metricated and Retyped R#12/CH8G-RD834170 1963 12 16 Released, E7-2884 Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 2 BRASS STR
2、IP (SAE CA 260) ESE-M2A58-A 1. SCOPE The materials defined by this specification are two annealed tempers of SAE CA 260 brass strip, furnished in the soft anneal or light anneal condition. The anneal desired to be indicated on the Purchase Metal Specification Sheets. 2. APPLICATION This specificatio
3、n was released originally for materials used for the manufacture of tanks, headers, and baffles for heaters, radiators, and supply tanks. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Pr
4、oduction Materials (WSS-M99P1111-A). 3.1 CHEMICAL COMPOSITION Copper 68.50 - 71.50 Lead 0.05 max Iron 0.05 max Other Elements 0.10 max Zinc Remainder 3.2 MECHANICAL PROPERTIES (ASTM E 8 and E 18) Soft Anneal Light Anneal 3.2.1 Tensile Strength psi 40,000 - 48,000 46,000 - 56,000 (MPa) (276 - 331) (3
5、17 - 386) 3.2.2 Yield Strength, min psi 12,000* - (MPa) (83)* - 3.2.3 Elongation, % 60 - 70* 40 - 50* 3.2.4 Hardness-Rockwell “F“ 52 - 65 “15T“ 65 - 75* ENGINEERING MATERIAL SPECIFICATIONESE-M2A58-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 2 3.3 METALLU
6、RGICAL PROPERTIES Soft Anneal Light Anneal 3.3.1 Micro-Structure Fully Recrystallized Fully Recrystallized *Indicated properties not to be used as basis for rejection; however, can be used to support functional rejection. 3.3.2 Grain Size 0.050 - 0.090 mm 0.010 - 0.035 mm 5. GENERAL INFORMATION The
7、information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 SURFACE CONDITIONS 5.1.1 Material to be free from holes, laminations, abrasions, and other surface defects and when unrolled must be free of buckles, crimps, and short waves. 5
8、.1.2 Surface Finish 5-10 micro in (0.13 - 0.25 micrometer) rms* 5.2 QUALITY 5.2.1 Cleanliness Material must be clean and shall be free from scale, stains, dirt, greases, oils, or foreign matter which are detrimental to fabricating operations. (Certain lubricants not detrimental to fabricating may be
9、 used if very lightly and evenly applied.) 5.2.2 Fabrication Technique Annealing, rolling, cleaning, and slitting must be in accordance with best commercial practice. 5.3 DIMENSIONAL REQUIREMENTS 5.3.1 Edgewise bend or curvature not to exceed 1/4 in (6 mm) in 72 in (1830 mm) length. *Indicated prope
10、rties not to be used as basis for rejection; however, can be used to support functional rejection. 5.3.2 Thickness and Width Dimensions covering thickness and width as shown on Purchase Metal Specification Sheets. 5.4 Suppliers to furnish written report on their test results for each shipment regarding dimensional, chemical, mechanical, and metallurgical properties.
