1、Designation:D247501(Reapproved 2013)Standard Specification forFelt1This standard is issued under the fixed designation D2475;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates
2、the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers all standard types of felt in theform of rolls and sheets th
3、at are suitable for mechanical use.Certain special-purpose felts are also covered.1.2 This specification is not applicable to felt-like productsthat utilize weaving,knitting,stitching,or bonding such aspapermakers felt.1.3 Trade practice in the felt industry deals in pounds,yards,and inches,therefor
4、e the values stated in inch-pound units areto be regarded as standard.The values in SI units are providedas information only.1.3.1 The specification referenced in 2.2 uses only inch-pound units.he percent specific gravity of that class.TABLE 1 Wool Sheet Felt:Thickness and Mass(Weight)ASTM(NTA)Class
5、ColorThickness,in.Thickness,mmMass(Weight)lb/yd2Mass(Weight)kg/m2NominalTolerancesNominalTolerancesNominalTolerancesNominalTolerancesSheetsCut PartsSheetsCut Parts26S1White0.125 0.014 0.0163.17 0.35 0.411.50 0.100.81 0.0526S4Gray0.1880.0160.0184.780.410.462.250.151.220.080.2500.0200.0226.350.510.563
6、.000.201.630.110.3130.0220.0247.950.560.613.750.252.040.140.3750.0240.0269.520.610.664.500.302.440.160.5000.0300.03212.700.760.816.000.403.260.220.6250.0350.03715.880.890.947.500.454.070.240.7500.0400.04219.051.021.079.000.504.890.270.8750.0460.04822.231.171.2210.500.555.700.301.0000.0510.05325.401.
7、301.3512.000.606.520.331.2500.0620.06531.751.571.6515.000.708.150.381.5000.0720.07538.101.831.9118.000.809.770.431.7500.0830.08544.452.112.1621.000.9011.400.492.0000.0940.09850.802.392.4924.001.0013.030.542.5000.1150.11963.502.923.0230.001.0516.290.573.0000.1360.14176.203.453.5836.001.1019.550.6034S
8、1White0.1250.0120.0143.170.300.362.000.101.090.0534S2White0.1880.0120.0144.780.300.363.000.151.630.0834S3White0.2500.0160.0186.350.410.464.000.302.170.1634S4Gray0.3130.0170.0197.950.430.485.000.352.710.190.3750.0190.0219.520.480.536.000.403.260.220.5000.0220.02412.700.560.618.000.504.340.270.6250.02
9、60.02815.880.660.7110.000.605.430.330.7500.0290.03119.050.740.7912.000.706.520.380.8750.0320.03422.230.870.8614.000.757.600.411.0000.0360.03825.400.910.9716.000.808.690.431.2500.0420.04531.251.071.1420.000.9010.860.491.5000.0490.05238.101.241.3224.001.0013.030.541.7500.0560.05944.451.421.5028.001.10
10、15.200.602.0000.0630.06750.801.601.7032.001.2017.380.652.5000.0760.08063.501.932.0340.001.2521.720.683.0000.0900.09576.202.292.4148.001.3026.060.7143S1White0.1250.0120.0143.170.300.362.500.301.360.1643S2White0.1880.0120.0144.780.300.363.750.352.040.1943S3White0.2500.0140.0166.350.360.415.000.402.710
11、.2243S4Gray0.3750.0160.0199.520.410.487.500.504.070.271This specification is under the jurisdiction of ASTM Committee D13 onTextiles and is the direct responsibility of Subcommittee D13.13 on Wool and Felt.Current edition approved July 1,2013.Published September 2013.Originallyapproved in 1965.Last
12、previous edition approved in 2008 as D2475 01(2008).DOI:10.1520/D2475-01R13.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1ContinuedASTM(NTA)ClassColorThickness,in.Thickness,mmMass(Weight)lb/yd2Mass(Weight)kg/m2NominalTolerancesNo
13、minalTolerancesNominalTolerancesNominalTolerancesSheetsCut PartsSheetsCut Parts0.5000.0190.02212.700.480.5610.000.605.430.330.6250.0220.02515.880.560.6412.500.706.790.380.7500.0250.02819.050.630.7115.000.808.150.430.8750.0270.03022.230.690.7617.500.909.500.491.0000.0300.03325.400.760.8420.001.0010.8
14、60.541.2500.0360.04031.150.911.0225.001.1013.560.601.5000.0410.04538.101.041.1430.001.2016.290.651.7500.0470.05144.451.191.3035.001.3019.000.712.0000.0530.05850.801.351.4740.001.4021.720.762.5000.0640.07063.501.631.7850.001.4527.150.793.0000.0750.08276.201.902.0860.001.5032.580.8156S1White0.1250.010
15、0.0143.170.250.363.250.401.760.2256S2White0.1880.0100.0144.780.250.364.900.502.660.2756S3White0.2500.0110.0166.350.280.416.500.603.530.33S654Gray0.3750.0130.0189.520.330.469.750.805.290.430.5000.0160.02212.700.410.5613.001.007.060.540.6250.0180.02415.880.460.6116.251.108.820.600.7500.0200.02619.050.
16、510.6619.501.2010.590.650.8750.0220.02822.230.560.7122.751.3012.350.701.0000.0250.03125.400.630.7926.001.4014.120.761.2500.0290.03631.750.740.9132.501.5017.650.811.5000.0330.04038.100.841.0239.001.6021.180.871.7500.0380.04644.450.971.1745.501.7024.710.922.0000.0420.05150.801.071.3052.001.8028.240.982.5000.0500.06163.501.271.5565.001.8535.291.003.0000.0580.07076.201.471.7878.001.9042.351.0368S1White0.1250.0070.0133.170.180.334.000.502.170.2768S2White0.1880.0070.0144.780.180.366.000.753.260.4168S3
