1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Para. No. Revisions1978 10 06 Metricated Renumbered and Retyped CAHI-RD572066-1141963 07 26 Released ESB-M9H34-A AS1-1004WP 3948-a Page 1 of 3FABRIC, OSNABURG-DYED AND SIZEDESB-M9H34-AESB-M9H34-B1. SCOPEThe material defined by
2、 this specification is a dyed and sized cottonosnaburg fabric, evenly woven, and of good commercial quality.2. APPLICATIONThis specification was released originally for material used as a springfacing or listing on the rear or sides of seat cushions.3. REQUIREMENTS3.1 CONDITIONING AND TEST CONDITION
3、SAll test values indicated herein are based on material conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested underthe same conditions unless otherwise specified.3.2 COLORShall match the approved sample on file in the T
4、extile EngineeringSection, BEPE Materials Engineering Department.3.3 WEIGHT, min 5.3 oz/yd 2 (0.180 kg/m 2 )(FLTM BN 6-1)3.4 CONSTRUCTION, min(ASTM D 1910)Warp 40 ends/in (157 ends/100 mm)Filling 26 picks/in (102 picks/100 mm)3.5 YARN SIZE AND DESCRIPTION(ASTM D 1244)Warp 9 cc (65 tex) 16 tpi (630 t
5、pm)(Cotton)Fill 9.4 cc (65-70 tex) 14 tpi (551 tpm)(Cotton)3.6 WEAVE Plain3.7 TENSILE STRENGTH, min(ASTM D 1682, Grab Method)Warp 55 lb (245 N)Filling 50 lb (222 N)ENGINEERING MATERIAL SPECIFICATION ESB-M9H34-AESB-M9H34-BWP 3948-b Page 2 of 33.8 STRETCH AND SET, max(FLTM BN 4-1)Stretch SetWarp % 5.0
6、 2.0Filling, % 9.0 4.03.9 SHRINKAGE, max(FLTM BN 5-1)Warp 8.0 %Filling 4.0 %3.10 TEAR STRENGTH (Trapezoid), min(FLTM BN 22-1)Warp 6 lb (27 N)Filling 6 lb (27 N)3.11 SIZING, max 12 %(FLTM AN 3-1)3.12 SELVAGESShall be of uniform width and of equal width on both edges of thefabric. The selvages shall b
7、e so made that the tension shall bethe same as, and shall lie flat with the body of the cloth. Baggygoods and curling selvages shall be cause for rejection.3.13 ESB-M9H34-B FLAMMABILITY REQUIREMENTS 3.13.1 FlammabilityIn order to comply with Federal Motor Vehicle SafetyStandard No. 302, the material
8、s, portions of components,and composites shall not burn, or transmit a flame acrossits surface, at a rate of more than 101 mm/min. Todemonstrate compliance, the sample size and method oftesting shall be in accordance with FLTM BN 24-2.3.13.2 Performance - Environmental AgingAll materials, portions o
9、f components, and compositesdefined by this specification that have not been treated,modified or reformulated and exceed a max burn rate of 76mm/min as specified by the Flammability Lot Sampling Planof FLTM BN 24-2, must be evaluated for permanency of thematerials flame retardant properties per ESB-
10、M25P3-Aaccording to the accelerated environmental agingrequirements applicable to the basic material category ofthis particular specification.Any material, portions of components, and compositesdefined by this specification that have been treated,modified or reformulated to conform to Flammability L
11、otSampling Plan of FLTM BN 24-2, regardless of max burn rate,must be evaluated for both permanency of materials flameretardant properties and changes in mechanical, chemicaland physical properties per ESB-M25P3-A applicable to thebasic materials category of this particular specification.ENGINEERING
12、MATERIAL SPECIFICATION ESB-M9H34-AESB-M9H34-BWP 3948-b Page 3 of 33.13.3 Flammability Test ProgramMaterials, portions of components, and composites governedby this specification must also comply with therequirements of ES-D3AB-11014-AA.3.14 SUPPLIERS RESPONSIBILITYMaterials supplied to this specific
13、ation must be equivalent to thatoriginally approved. Changes in formulation or processing shall notbe made without prior approval as described in Supplier Procedure I-A4. APPROVAL OF SUPPLIERSSuppliers to this specification must be approved by the affected productengineering office. Procedure for gaining approval of a specific materialto a new/existing ES-M specification is contained in Supplier Procedure I-A.Approved new suppliers will be added to the Engineering Materials ApprovedList.
