GMW-15408-2008.pdf
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1、 WORLDWIDE ENGINEERING STANDARDS Material Specification Elastomers GMW15408 Turbo Charger Hoses with High Temperature Resistance Copyright 2008 General Motors Corporation All Rights Reserved May 2008 Originating Department: North American Engineering Standards Page 1 of 8 1 Scope This specification
2、covers the materials and performance of elastomeric turbocharger hoses for higher temperature resistance. 1.1 Material Description. Materials covered by this specification are divided into the following types: 1.1.1 Type A: Fluoroelastomer (FKM) lining, peroxide cured with Silicone Elastomer (VMQ) i
3、ntermediate layer and cover for +180C permanent and +200C peak temperatures. 1.1.2 Type B: FKM lining, bisphenolic cure system with higher elongation, with VMQ intermediate layer and cover for +200C permanent and +225C peak temperatures. 1.1.3 Type C: FKM lining, peroxide cured with VMQ intermediate
4、 layer and cover for +200C permanent and +225C peak temperatures. 1.1.4 Type D: Fluorosilicone elastomer (FVMQ) lining with VMQ intermediate layer and cover for +180C permanent and +200C peak temperatures. 1.1.5 Type E: Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout). If no type of
5、 material is indicated, material of type A is sufficient. All hoses shall have textile reinforcement suitable to fulfill the requirements of the material and durability tests. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Spec
6、ifications. ASTM D2000 ISO 815 ISO 34-1 ISO 1431-1 ISO 36 ISO 1817 ISO 37 ISO 23529 ISO 48 SAE J200 ISO 188 2.2 GM Standards/Specifications. GME 8760 GMW3001 GME L0004 GMW3059 GME L0005 3 Requirements 3.1 Resources 3.1.1 Test Samples. Unless otherwise specified, the shape and size of test pieces sha
7、ll be in accordance with the relevant Test Procedure. Minimum six test samples (hoses) are required for initial sample testing. Minimum three test samples (hoses) are required for inspection testing. 3.1.1.1 Samples are finished parts or to be taken from finished parts. (Where the dimensions on the
8、finished parts do not allow preparing of test pieces, tests are to be performed on sheet material of same production batch. The same state of cure between slabs or buttons and finished parts must be assured by appropriate tests, which must be described in the test report.) When presenting a new qual
9、ity, sheet material of the same batch for all layers is recommended. 3.1.1.2 If not otherwise stated, mechanical properties in delivery state and after heat or fluid immersion are to be tested at +23 5C and with the same test methods. Unless otherwise stated, ambient temperature test conditions shal
10、l be held to +23 5C. Unless otherwise stated, all other temperatures except +23 5C shall be held to 3C. 3.1.2 Conditioning. Conditioning shall be as specified in the relevant Test Procedure. 3.1.3 Equipment. Conforming to the relevant Test Procedures. 3.1.4 Calibration. The test facilities and equip
11、ment shall be in good working order and shall have a valid calibration label. 3.1.5 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this specification shall be determined correctly with respect to its physical definition. 3.1
12、.6 Facilities. Conforming to the relevant Test Procedures. 3.1.7 Deviations. Deviations from the requirements of this standard shall have been agreed upon. Such deviations shall be specified on component drawings, test certificates, reports, etc. GMW15408 GM WORLDWIDE ENGINEERING STANDARDS Copyright
13、 2008 General Motors Corporation All Rights Reserved Page 2 of 8 May 2008 3.2 Material and Performance Requirements. 3.2.1 Design or Product Validation Testing. Material and performance properties are summarized in Table 1. For full approval of a hose, compliance to the requirements of Table 1 thru
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