Downloaded from https://www.everyspec.com MJL=st ~ 13 &nwl’y - (f) Data sheets similal. to those shown in ligures 107-1, 107-2, 107-G, and 107-4. Nhich time the fuel shall maintained a temperature of I(W’ v. 2° F. 3. SAMPLE 4.1.3 Upon com]detion of the immmion period, remove the specimen from the wn- theiic fuel :.nd dry nmter ford druft .at room temperature for 1 hour. 3.1 Melt approximate! 800 g of the rubberized-iar blend in a melting unit. %2 Stil the rubberized-tar blend con- tinuously by mwhanicd means during the melting operation. period, conduct pentlation tat in accord- tince with SS-R-406, method Nb. 214.01.
4.1.4 .%fter cornplet ion of the dTyiW 4.1.5 At appi’oximately the same time that the penetration is determined on the specimen that had been immersed, make a penetration test on the test specima temporarily set a~ide. 3.3 Make frequent temperature meastme- ments to assure that the material is held u-ithin the following limits: (a) The tcrn!wxture of th~~ blell~~ during melting ~hall not exceed 245° F. 4.1.6 Record penetration teat data before? *III(I after immersion on data sheets aimiiar to thn! shown in figure 107-1. (iJ) The temperature of the heat- transfer oil shRIl not exceed 275” F. 4.2 V[dume and weight changes durinu immersion in fuel.
(c) The pouring temperature of th~> blend shall be 235° = F. 4.2.1 Pour a pbrtlon of the sample pre- pared as described in 3.1 through 3.3 int.a the metal conta irwrs described in 2.7. The depth of the materinl in the container shau be approximately 1 in. (d) The melting time shall not exceed 60 minutes. 4. TEST PROCEDIJRES 4.2.2 Cool the specimen in air at a tem- perature not higher than 85° F. nor lower than 700 F. for not less than nor more than 2 hours: then weigh the sample in air. 4. Penetration. 4,1.1 Pr:’pare two pcntrstion test speci- mens in accordance with SS-RA06, method No. 214.01.
Allow specimens to cool in zir 4.2.3 Plitcc the specimen ill a water bsth maintained at a temperature of = 0.2” F. for no: less than I !~ nor more than 2 hours. at a temperature not higher than F. nor lower than F. for not less than 1I,v nor more than 2 hours. Set one test speci men aNide temporarily. 4.2.4 Af!er the s~wcimen has been in the w“atir bath for th~ apwifiml time, we~ht it in wd.eir fit tho matnr tompertiurr as the wn@r I*1 h. 4,1.2 Imm(me fmc ted apodmon k nyn- thstfr fuel, wmtpw! iIf 70 p.rr~*tlt by vIIlumo of AHI’M ho-octane und S0 pwrtwl by volume of ASTM induntrlal-gradi’ toluene, for N pmi[~d nf Ill hours durirw 4.~.Ij ~)ellj.minp tlw (Iifft*rence between Mot!md 107 u