1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 00 2014 12 17 Released C. Mracna NA Controlled document at www.MATS Copyright 2014, Ford Global Technologies, Inc. Page 1 of 2 ALUMINUM ALLOY (A356-T6) MODIFIED, CAST WHEEL WSS-M2A123-B1 ALUMINUM ALLOY (A356-T6) MODIFIED, CAST WHEEL, HIGH
2、 STRENGTH WSS-M2A123-B2 1. SCOPE The materials defined by this specification are permanent mold cast aluminum alloys (A356-T6). 2. APPLICATION Variant B1 - This specification was released originally for material used for solution heat treated and artificially aged cast aluminum automotive wheels. Va
3、riant B2 - This specification was released originally for material used for solution heat treated and artificially aged cast aluminum automotive wheels requiring strength higher than what is provided by typical industry standards such as SAE J452 A356-T6. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FO
4、R PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION The chemical composition of the aluminum wheel must conform to SAE J452 A356.0, except Strontium 0.01 - 0.04 wt% (used t
5、o modify Silicon). The chemical composition of the casting shall be checked per procedures outlined in ASTM B108 and in accordance with suitable chemical (ASTM Method E34), or spectrochemical (ASTM E607, ASTM E1251) test methods. Metal may consist of a blend of both primary and secondary materials.
6、3.3 MECHANICAL PROPERTIES, (T6 Temper) 3.3.1 Mechanical Properties for WSS-M2A123-B1 (ASTM B557 and ASTM E10) The mechanical properties of the aluminum wheel must conform to SAE J452 A356.0, except no maximum for Brinell Hardness. 3.3.2 Mechanical Properties for WSS-M2A123-B2 The following mechanica
7、l properties are required: 3.3.1.1 Yield Strength (0.2% Offset) 170 MPa min (ASTM B557) ENGINEERING MATERIAL SPECIFICATION WSS-M2A123-B1/B2 Copyright 2014, Ford Global Technologies, Inc. Page 2 of 2 3.3.1.2 Tensile Strength 245 MPa, min (ASTM B557) 3.3.1.3 Elongation 5 % min (ASTM B557) 3.3.1.4 Hard
8、ness 75 BHN min (ASTM E10, 500 Kg, 10 mm ball) 3.4 HEAT TREATMENT T6 Temper: A modified T6 heat treatment cycle is permissible with demonstration of compliance to required mechanical properties. NOTE: Casting may be mechanically straightened after solution and quench, but not after the artificial ag
9、ing treatment. 3.5 MICROSTRUCTURE (ASTM E3) Microstructure of this material shall consist of primary alpha aluminum dendrites surrounded by fine Al-Si eutectic particles as viewed at 200X magnification. The silicon particles shall be rounded, which indicates proper modification and heat treatment. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 5. SUMMARY OF REVISIONS
