1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2013 01 03 Revised 3.5.1 removed reference to ES4R8Q-6010-CB G. Weber, NA 2004 04 23 Revised Para 3.4.3 deleted and 4.3 added R. Batty 2003 10 09 Activated R. Batty (PDE)/G. Weber (POEE) Controlled document at www.MATS Copyright 2013,
2、Ford Global Technologies, LLC Page 1 of 3 COMPACTED GRAPHITE CAST IRON WSS-M1A354-A 1. SCOPE The material defined by this specification is a compacted graphite cast iron, with a combined nodular and vermicular graphite morphology, to be used for applications requiring mechanical properties intermedi
3、ate to those of grey and nodular iron. 2. APPLICATION This specification was originally released for material used in the production of V6 Diesel Engine Cylinder Blocks. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Compa
4、nys Standard Requirements For Production Materials, WSS-M99P1111-A. 3.2 CHEMICAL COMPOSITION Composition shall be selected in order to optimize castability, mechanical properties, microstructure, and machinability requirements. Specific composition limits (including mandatory maximum limits for Tita
5、nium, Chromium and Manganese shown below) and foundry practices to meet performance and manufacturing requirements will form part of an agreed Control Plan for individual component geometries. Weight % Titanium 0.015 max. Chromium 0.10 max. Manganese 0.40 max. 3.3 HARDNESS (Unless otherwise stated o
6、n the Engineering Drawing) (ASTM E 10/ISO 6506) Head Face 215 - 265 HB Sections: Bulkhead 210 - 260 HB Section: Intrabore 215 - 265 HB ENGINEERING MATERIAL SPECIFICATION WSS-M1A354-A Copyright 2013, Ford Global Technologies, LLC Page 2 of 3 Unless otherwise specified, castings may be normalized or a
7、nnealed to meet the hardness range. If this is the case, the heat treatment cycle shall be specified on the Engineering Drawing. The method, frequency and location for checking hardness shall be specified in the Engineering Specification and in the Supplier Control Plan. 3.4 TENSILE PROPERTIES (ASTM
8、 E 8M/ISO 6892/ASTM E 111) 3.4.1 Ultimate Tensile Strength, Bulkheads 2 & 3, 420 MPa min. 3.4.2 Yield Strength, Bulkheads 2 & 3 310 MPa min. 3.4.3 Moved to paragraph 4.3. 3.4.4 Modulus of Elasticity 140 GPa min. (Chord Modulus Method, 5 to 25% of UTS) The values above will be measured on test bars t
9、aken from components. The test bar shall be taken such that minimum expected properties are represented, and the frequency and exact location for taking the sample shall be indicated in the appropriate Engineering Specification, and reflected in the Supplier Control Plan. 3.5 MICROSTRUCTURE (Determi
10、ned using SinterCast methodology chart version (B-15-11-0.1) 3.5.1 Graphite morphology Cylinder Bore Bulkhead Nodularity 80% (target 93%) Carbides or Phosphides 1% max. 1% max. 3.6 QUALITY AND CLEANLINESS As-cast components shall be free of loose sand, oxide and scale. No inclusions are permitted on
11、 the finished surfaces or any remaining machined portion of the components. Porosity and shrinkage requirements shall be described in the Engineering Specification, and appropriate method and locations for checking shall be specified in the Supplier Control Plan. ENGINEERING MATERIAL SPECIFICATION W
12、SS-M1A354-A Copyright 2013, Ford Global Technologies, LLC Page 3 of 3 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. 4.1. FATIGUE
13、 PROPERTIES 4.1.1 Axial Fatigue Strength at 107 cycles. 150 MPa min (ASTM E 466, R = -1, sinusoidal waveform) 4.1.2 Rotating Bending Fatigue Strength at 107 cycles. 200 MPa min Test conditions 33Hz 2000 r.p.m. Applied Load = (stress/9.81) x (PI x 52) = 1600 Kgf Fatigue strength is measured on test b
14、ars taken from castings produced according to the approved Control Plan. Test bar location shall be indicated on the appropriate Engineering Drawing and/or Engineering Specification, and reflected in the supplier Control Plan. 4.2 NON-DESTRUCTIVE TESTING Ultrasonic Defect Detection (ASTM E 114) Loca
15、tion for the measurements and maximum size allowed, as identified in the Engineering Specification. Crack Detection Magnetic Particle Examination (ASTM E 709) - Location for the measurement as identified in the Engineering Specification. The casting must be free of cracks. 4.3 OTHER PROPERTIES Becau
16、se of the intended application i.e. diesel engine cylinder blocks, elongation (%) is not defined because it can vary depending on a number of influencing factors. For guidance, a value of 0.5% minimum elongation would normally be expected. 4.4. GENERAL PRACTICE Castings shall be representative of go
17、od foundry practice and conform to dimensions and tolerances specified on the casting drawing. All critical areas with respect to these properties shall be clearly designated on the Engineering Drawing. 5. SUMMARY OF REVISIONS 2013 01 03 Removed reference to microstructure locations per ES4R8Q-6010-CB Revised format and numbering.
