ARMY MIL-S-70440 (2)-1987 SUPPORT COVER《掩护支援》.pdf

《ARMY MIL-S-70440 (2)-1987 SUPPORT COVER《掩护支援》.pdf》由会员分享，可在线阅读，更多相关《ARMY MIL-S-70440 (2)-1987 SUPPORT COVER《掩护支援》.pdf（4页珍藏版）》请在麦多课文档分享上搜索。

1、NIL-S-70LILI0 (2) 13 7777906 ClLi27003 7 -p - SC MIL-S-70440 (AR) AMENDMENT 2 SUPERSEDING AMENDMENT 1 16 June 1987 17 January 1984 MILITARY SPECIFICATION SUPPORT, COVER This Amendment forms a part of Military Specification MIL-S-70440 (AR), dated 1 September 1983, and is approved for use within the

2、US Army Armament Munitions and Chemical Command, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 2.3: Add the following new paragraph: “2.3 Other publications. The following documentfs) form a part of this specification to the extent specified herein. Un

3、less otherwise indicated, the issue in effect on date of invitation for bids or request for proposal sha3.1 apply ASTM Method B633 - Electrodeposited Coatings of Zinc on Iron and Steel (Application for copies should be addressed to the American Society for Testing and Materials, 1926 Race Street, Ph

4、iladelphia, PA. 19103) . “ 3.6: Delete I3.6“ and substitute “3.3“. PAGE 3 4-3.1: Delete “Support, Cover (painted) “ and substitute “Support, Cover (after surface finishing) (see 6.9) “. PAGE 4 Table 1: Delete “Support, Cover (after painting)“ and substitute “Support, Cover (after surface finishing)

5、(see 6.9) “. BMSC N/A 1 of 4 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r - _-_I- MIL-S-70440 (2) 13 999970b 0427.004 O MIL-S-70440 (AR) AMENDMENT 2 PAGE 6 * 4.4.2

6、.1: Delete title “Support, Cover (uncoated) and substitute “Support, Cover (uncoated when painted or when zinc plated after plating) “. 4.4.2.1: Minor 201: Delete “3.1“ and substitute “3.3“. PAGE 7 4.4.2.2: Minor 202: Delete “3.1“ and substitute “3.3“. Notes: Add “This paragraph is not applicable wh

7、en cover supports are zinc plated“. PAGE 8 4.4.2.3: Delete in its entirety and Substitute the new table attached . Add new paragraphs 4.5.3, 4.5.4 and 4.5.5: “4.5.3 Zinc plate thickness. Zinc plate thickness shall be determined in accordance with ASTM B633. 4.5.4 Zinc plate corrosion resistance. Two

8、 samples per shift shall be selected for this test. The test shall be performed in accordaance with ASTM B633. If any component fails to comply with the specified requirements, the quantity represented by the sample shall be rejected. 4.5.5 Zinc plate corrosion resistance. mo samples per shift shall

9、 be selected for this test. The test shall be performed in accordance with ASTM B633 except that post first article testing shall only require 48 hours salt spray immersion. If any component fails to comply with the specified requirements, the quantity represented by the sample shall be rejected. “

10、5.1.1 and 5.1.2: Delete “paint surfaces“ and substitute “inished surfacesn. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-70LILIO (2) 13 U 79777Ob 0427005 2 U ri 8 t rl LT & a, 3 O u u L 8 9: tll m cv * cy e e - rlriri rl rim mmm IT MM .e.

11、e e. O cy . rnm IDID e. * u1 u LI E la a, u c -4 E 8 y-l u u1 a, .u 3i m Y a, u -C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-70440 (2) 13 m 9777906 042700b 4 m MIL-S-70440 (AR) AMENDMENT 2 PAGE 10 6.9: Add the following new paragraph: “6.

12、9 First article testing for alternate finishes. Two alternate surface finishes are allowed for the cover support. When the contractor uses the paint over phosphate finish cover support submission quantities and inspection shall be in accordance with para 4.3.1 and Table I. When the contractor uses t

13、he alternate zinc plate finish in lieu of supplying 10 phosphated cover supports and 10 zinc plated cover supports he will supply a quantity of 20 zinc plated parts. After-examination for defects 10 of these will be subjected to adhesions tests and 10 to corrosion resistance tests. The margins of th

14、is amendment are marked with an asterisk or vertical line to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations

15、. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Army - AR Preparing activi.ty: Army - AR (Project 13 2 O-A97 2) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-