1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 09 29 N-STATUS No Replacement Named, No known use C. Mracna, NA 2004 10 22 Revised Inserted 3.0; Deleted 3.2.6, 3.3, 3.4 & 4 1974 02 07 Released ES/ET 0648 TP Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC P
2、age 1 of 3 CHLOROPRENE RUBBER SQ-M2D9027-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a chloroprene rubber. 2. APPLICATION This specification was released originally for material used for drive shaft dust boots. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR
3、PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 TESTING OF STANDARD SPECIMENS 3.1.1 Original Physical Properties 3.1.1.1 Hardness Durometer A 48 - 56 (ASTM D 2240) 3.1.1.2 Tensile Strength, m
4、in 12 N/mm2(ASTM D 412, Die C) 3.1.1.3 Elongation at Break, min 400% (ASTM D 412, Die C) 3.1.1.4 Tensile Stress at 100% Elongation (ASTM D 412, Die C) 1.2 - 2.0 N/mm23.1.2 Change after 70 hrs Ageing in Air at 100 C +/- 2 C (ASTM D 573) 3.1.2.1 Hardness Durometer A, units 0 to +10 3.1.2.2 Tensile Str
5、ength 0 to +20% 3.1.2.3 Elongation at Break -30 to 0 3.1.2.4 Tensile Stress at 100% Elongation +20 to 50% 3.1.3 Change after 70hrs Ageing in ASTM Oil No. 1, at 100 +/- 2 C (ASTM D 471) 3.1.3.1 Hardness Durometer A, units 0 to +10 ENGINEERING MATERIAL SPECIFICATIONSQ-M2D9027-APrinted copies are uncon
6、trolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.1.3.2 Tensile Strength 0 to +15% 3.1.3.3 Elongation at Break -30 to 0 3.1.3.4 Volume -15 to -5% 3.1.3.5 Tensile Stress at 100% Elongation +20 to +50% 3.1.4 Compression Set after 22 hours at 100 +/- 2 C (ASTM D 395, Method B), max 30
7、% 3.1.5 Density, Mg/m31.30 - 1.40 (ASTM D 297) The tolerance of density for any supplier shall be +/- 0.02 Mg/m3based on the recorded density of its original approved sample. 3.1.6 Ash Content (FLTM EU-BO 006-02, test temperature 800 +/- 25 C) The tolerance of ash content for any supplier shall be +
8、/- 1% based on the recorded ash content of its original approved sample, e.g. calculated value is 5% allowed tolerance of ash content is 4 - 6%. 3.1.7 Low Temperature Resisitance (ASTM D 746, Method B) Must not be brittle after 3 minutes at -40 C. 3.1.8 Ozone Resistance Rating 0 (FLTM BP 101-01) 3.2
9、 TESTING FINISHED PARTS 3.2.1 Original Physical Properties 3.2.1.1 Hardness, I.R.H.D 47 - 57 (ASTM D 1415, micro tester) 3.2.2 Change after 70 hrs Ageing in Air at 100 +/- 2 C (ASTM D 573) 3.2.2.1 Hardness, units 0 to +10 3.2.3 Change after 70hrs Ageing in ASTM Oil No. 1 at 100 +/- 2 C (ASTM D 471)
10、3.2.3.1 Hardness, units 0 to +10 units 3.2.3.2 Volume -15 to -5% The weight of specimen for volume change determination shall be 3 gramme minimum. ENGINEERING MATERIAL SPECIFICATIONSQ-M2D9027-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 3.2.4 Density, Mg
11、/m31.30 - 1.40 (ASTM D 297) The tolerance of density for any supplier shall be +/- 0.02 Mg/m3based on the recorded density of its original approved sample. 3.2.5 Ash Content (FLTM EU-BO 006-02, test temperature 800 +/- 25 C) The tolerance of ash content for any supplier shall be +/- 1% based on the recorded ash content of its original approved sample, e.g. calculated value is 5% allowed tolerance of ash content is 4 - 6%.
