q.,;;. 9 -69
MIL-I - 220239 . . 999990b 1331823 51T . .
..
q.,;;. 9 -69
CJ -.;2.9...07 MIL-I-li2023B 16 October 1964 SUPERSEDING MI.L -I-2202SA 2 May 1961
MILITARY SPECIFICATION INSULATION FELT, THERMAL AND SOUND ABSORBING FELT, FIBROUS GLASS,, FLEXIBLE This specification is mandatory for Ill!& by all Departments aDd Agencies of Department of Defense,
1. SCOPE' 1.1 Scope. - This specification covers JJghtwetght, flexible fibrous glass felt for thermal and acousUcal control for use with temperatures up to 4000F. 1. 2 Types and classes. - Fibrous glass felt shall be of the following types and classes, as speclfled (see 6,1): Type I Type II Class 2 Class 3 Class 4 Class 5 Class 6
-
Thermal lnsulaUon felt. Sound absorbing felt, Nominal density 0. '15 pound per cubic foot. Nominal density 1. 0 pound per cubic foot. Nominal density 1. 5 pound per cubic foot. Nominal density 2. 0 pound per cubic foot. Nominal density 3. 0 pound per cubic foot.
2. APPLICABLE DOCUMENTS
2.1 The following documents of the i!lsue in effect on date of lnvitaUon for bids or request for proposal, for m a part of the spec1fical:1on to the extent spec!fied herein. SPECIFICATIONS FEDERAL PPP-B-636 - Boxes, Fiberboard. STANDARDS
MILITARY MIL-STD-106- Sa.mpUng Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Mark:l.ng for Sbipment and Storage.
(CoPies of speCifications, standards, drawings, and publications required by suppliers in connection with specific procurement funcUans should be obtained from the procuring acU vity or as direct.e d by the contracting officer.) 2. 2 other puhlicaUons. - The following document forms a part of this spec1flcation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules.
(Application for copies should be addressed to the Official ClassWcauon Committee, 1 Park Avenue at 33rd Street, New York 16, N. Y. )
.
.
I FSC 5640 J ~, m
1274
'il
ACC-10001
MIL·I-220238 •
999990b 1331&24 40b •
.. MIL-I-220B3B
AMERICAN SOCIETY FOR TESTING MATERIAUl C167- Method of Test for Thickness and Density of Blanket or Batt-Type Thermal Insulating Materials. C17'1- Method of Test for Thermal Conductivity of Materials by Means of the Guarded Hot Plate. C4.23 - Method of Test for Sound Absorption of Acoustical Materials in Reverberation Rooms (Tentative). 01448 - Micronalre Reading of Cotton Fibers, (Application for coples should be addressed to the American Society for Testing Materials 1916 Race Street, Philadelphia S, Pennsylvania.) ' (Technical society and technical association spectflcations and standards are generally available for reference from libraries. They are also dlstriboted among technleal groups and using Federal agencies.) 3. REQUIREMENTS
3, 1 Material. - Tbe basic material shall be glass, processed from a molten s tate into fibrous form conta1ning not more than 1. 6 percent by we1gbt of nonflbrous material (shot) 1 bonded with a binder to tor~ a Dexible felt (see 4. 6. 1}.
S. l . l Fiber diameter. - The average fiber dlaDieter shall not exceed o. 00026inch. (See 4. 5.2. ) 3, 2 DJmensions and densities. 3, 2.1 Dimensions.3, 2.1. 1 Length. - The felt shall be furnished in rolls, 60, 100 or 200 feet in length, except where thicknesses greaurthan linch and densities greater than 2. 0 pounds per cubic foot may be furlliahed in cut sheets in accordance with manufacture standard practice, as specified (see 6.1). ReUs may contain more than one piece but no pl.ece shall be less than 10 feet.
3. 2.1. 2 ~ - The width of the rolls shall be 24, 38, 48, or 72 inches,
as specifled (see 6, 1).
s. 2.1. 3 Thickness. - The felt shall be furnlsheclin thickness of 1/2 Inch to 41nches by 1/2 Inch increments, as specifled (see 6.1), except that classes 6 and 8 shall have a maxlmum thickness of lllnches. 3, 2.1r 4 Tolerances. - A minus tolerance of 1/8 Inch in wldth and thickness and an excess. in ali dimensions will be permitted. 3. a. 2 Deosity. - A plus or minus tolerance of 10 percent In the densities shown 1n 1. 2 will be permit-
ted. 3. 3 Binder content. - 'lbe binder content of the felt shall not exceed 30 percent (see "- 6, 4).
3. 4 Alkallniq. ·- 'lbe alkaUnity of the felt expressed as equivalent sodium oxide (NAaO) shall not exceed 0. 60 percent and tbe pH shall be not less than 7. 6 nor more than 12. 0 (see 4. 6. 6), · 3. 6 Flex1bl.l.lty, - The felt shall show n.o visible rupture on its outside surface and shall spring back to its original shape alld dimensions when test as specified In 4. 5, 6,
3, 6 Resistance to smoldering, - Material shall not be smoldering at the expiration of the test spec11ied in 4.6. 7.
3. 7 Fire resistance. - The felt shall be rated u incombustible or fire-retardant wben tested as specIfied 1n 4. s. a.
3.8 ~·3. 8.1 Thermal conducti:it - The thermal conductivity (k} of the felt expressed in B. t. u. -inch per hour square feet degree enheit shall not exceed tbe values shown in table I (see 4. 6, 9).
2 ·- - - -
1275
C
..
q.,;;. 9 -69
CJ -.;2.9...07 MIL-I-li2023B 16 October 1964 SUPERSEDING MI.L -I-2202SA 2 May 1961
MILITARY SPECIFICATION INSULATION FELT, THERMAL AND SOUND ABSORBING FELT, FIBROUS GLASS,, FLEXIBLE This specification is mandatory for Ill!& by all Departments aDd Agencies of Department of Defense,
1. SCOPE' 1.1 Scope. - This specification covers JJghtwetght, flexible fibrous glass felt for thermal and acousUcal control for use with temperatures up to 4000F. 1. 2 Types and classes. - Fibrous glass felt shall be of the following types and classes, as speclfled (see 6,1): Type I Type II Class 2 Class 3 Class 4 Class 5 Class 6
-
Thermal lnsulaUon felt. Sound absorbing felt, Nominal density 0. '15 pound per cubic foot. Nominal density 1. 0 pound per cubic foot. Nominal density 1. 5 pound per cubic foot. Nominal density 2. 0 pound per cubic foot. Nominal density 3. 0 pound per cubic foot.
2. APPLICABLE DOCUMENTS
2.1 The following documents of the i!lsue in effect on date of lnvitaUon for bids or request for proposal, for m a part of the spec1fical:1on to the extent spec!fied herein. SPECIFICATIONS FEDERAL PPP-B-636 - Boxes, Fiberboard. STANDARDS
MILITARY MIL-STD-106- Sa.mpUng Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Mark:l.ng for Sbipment and Storage.
(CoPies of speCifications, standards, drawings, and publications required by suppliers in connection with specific procurement funcUans should be obtained from the procuring acU vity or as direct.e d by the contracting officer.) 2. 2 other puhlicaUons. - The following document forms a part of this spec1flcation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. OFFICIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules.
(Application for copies should be addressed to the Official ClassWcauon Committee, 1 Park Avenue at 33rd Street, New York 16, N. Y. )
.
.
I FSC 5640 J ~, m
1274
'il
ACC-10001
MIL·I-220238 •
999990b 1331&24 40b •
.. MIL-I-220B3B
AMERICAN SOCIETY FOR TESTING MATERIAUl C167- Method of Test for Thickness and Density of Blanket or Batt-Type Thermal Insulating Materials. C17'1- Method of Test for Thermal Conductivity of Materials by Means of the Guarded Hot Plate. C4.23 - Method of Test for Sound Absorption of Acoustical Materials in Reverberation Rooms (Tentative). 01448 - Micronalre Reading of Cotton Fibers, (Application for coples should be addressed to the American Society for Testing Materials 1916 Race Street, Philadelphia S, Pennsylvania.) ' (Technical society and technical association spectflcations and standards are generally available for reference from libraries. They are also dlstriboted among technleal groups and using Federal agencies.) 3. REQUIREMENTS
3, 1 Material. - Tbe basic material shall be glass, processed from a molten s tate into fibrous form conta1ning not more than 1. 6 percent by we1gbt of nonflbrous material (shot) 1 bonded with a binder to tor~ a Dexible felt (see 4. 6. 1}.
S. l . l Fiber diameter. - The average fiber dlaDieter shall not exceed o. 00026inch. (See 4. 5.2. ) 3, 2 DJmensions and densities. 3, 2.1 Dimensions.3, 2.1. 1 Length. - The felt shall be furnished in rolls, 60, 100 or 200 feet in length, except where thicknesses greaurthan linch and densities greater than 2. 0 pounds per cubic foot may be furlliahed in cut sheets in accordance with manufacture standard practice, as specified (see 6.1). ReUs may contain more than one piece but no pl.ece shall be less than 10 feet.
3. 2.1. 2 ~ - The width of the rolls shall be 24, 38, 48, or 72 inches,
as specifled (see 6, 1).
s. 2.1. 3 Thickness. - The felt shall be furnlsheclin thickness of 1/2 Inch to 41nches by 1/2 Inch increments, as specifled (see 6.1), except that classes 6 and 8 shall have a maxlmum thickness of lllnches. 3, 2.1r 4 Tolerances. - A minus tolerance of 1/8 Inch in wldth and thickness and an excess. in ali dimensions will be permitted. 3. a. 2 Deosity. - A plus or minus tolerance of 10 percent In the densities shown 1n 1. 2 will be permit-
ted. 3. 3 Binder content. - 'lbe binder content of the felt shall not exceed 30 percent (see "- 6, 4).
3. 4 Alkallniq. ·- 'lbe alkaUnity of the felt expressed as equivalent sodium oxide (NAaO) shall not exceed 0. 60 percent and tbe pH shall be not less than 7. 6 nor more than 12. 0 (see 4. 6. 6), · 3. 6 Flex1bl.l.lty, - The felt shall show n.o visible rupture on its outside surface and shall spring back to its original shape alld dimensions when test as specified In 4. 5, 6,
3, 6 Resistance to smoldering, - Material shall not be smoldering at the expiration of the test spec11ied in 4.6. 7.
3. 7 Fire resistance. - The felt shall be rated u incombustible or fire-retardant wben tested as specIfied 1n 4. s. a.
3.8 ~·3. 8.1 Thermal conducti:it - The thermal conductivity (k} of the felt expressed in B. t. u. -inch per hour square feet degree enheit shall not exceed tbe values shown in table I (see 4. 6, 9).
2 ·- - - -
1275
C
