Document XRQknzXmpaG2gmm134Vwk3YXd

loads of ths Ofljg 6 is as would be azqaeeted da to its density. ft* lower deflection at lower loads of the Q8g-5 say be due to the greater support gleea by the- prongs of the two steel facings, the prongs net being fully collapsed as ter the G8g-6. the crnsh-ertrusien shows considerably less deflection under load for the QSg-6 than far the G8g-5, as expected. Bawevar, the yield points for both are about the same. Use, relaxation figure* are about ths saws for both cempodtas. . lbs also asked that blanking sad handling eharaetsristies be checked. Both tits 08g-5 and 08g-6 handled wall and blanked satisfactorily, there were as problem of delednation. It ia concluded that the ilg-1 asbestos Billboard is aaeh dsasar than norael asbestos adllboerd sad banco does sot Boot standard physical requireaanta. When ooeblnod as P. S. #294 Oorbestos, a material with entirely different physical propertias remits when fwaMning en e beds of gangs than whan eoBbining os a basis of weight. If this B&terlal were to becom a prodoetiaa item, it eeeld nett be used in composite eonstruetione on & basis of gaago if it were necessary to maintain ths physical properties which re sult whan need on a bede ef weight, with reaped to the gauge and weight requiraneata presently specified ia the specifications and standards in volved. Materials Development Laboratory 1. A. Elrieh pt VPD-189-0000473 a,Ar;oz\/.70i:Y ASBESTOS IJI'LIJJOAK-O' c: COhtnBAOS re: S&K Special whit board (AIg~l) Pegs 1 ol 2 A. PLAIN KATE RIAL ---------- ---- ------- Gauge, ave rage Density, 1 b/t2-in.t hick Compressit ility at ] 000 psi Tensile st rength, p i Ignition 1 0 3S Moisture Water re si stance, 24 hrs ---- -1--- ` 1 sr_lin.*---- .......,----_r------------------ Alg-1 P.S.#282 3?.S*#282 Grade A Grade B .0585" --- -- 5.52 4.00-5.25 4.75-5.75 17.8 JS 16 - 25 ? 6 - 15 -55 600 175 min. 200 min. 18*6 ?S 20 ch max. 20 max. 1.4 J6 2 $ max. 2 fo-max. OK No Gisint. No. disint ' Load-Defle ctions ' @ Eel o a. 1000 psi @ 2000 psi @ 5000 psi 10000 ps i @ 30C ? l600 psi 2000 pBi 5000 psi 10000 ps i (#70 Board . typical. unc al,) .0035" .... 6.4 $> .0087" . ..15,8 io .0162" 27*6 .0207" ... 37.6 * -- -- -- -- 0055" _ .9,8 g .0105" 18.7 .'0177'" 31*6 ?S .0224" 40.0 585 .0105" 16.5 1 .0148" 22.7 # .052ff" 34.8 55 .0287" 44.0 55 VPD-189-0000474 (t:,;:Ay /;A/ (j MAO SC IK u3A VC: . i, A DO rUYV *v:iV AA7A' lAA ASBESTOS MILLB0AE3 & COEBESTOS Page 2 of 2 re: S&K Special white board (Alg-1) SUBJECT plain & combined as F.S. #296 ' al ' " 33'. COMBINED 1 3 F.S. #2? 6 CCE.BEST0 ..j OI'I BASIS C F WEIGHT A ND GAUGE - .DATE ..-jz____ --_ -- , C-8g-5 [basis of weight) G8g~6 (basis of Jjauge) Gauge,, coir bined, aiir Load-Dsfle ctions E .T. @ 1000 psi 2000 psi 5000 psi 1000 3 psi 3C 0F 1000 psi 2000 psi 5000 psi 1000 ) psi Catex'pills r Relaxati on 212F Urusii-iiatr usion t? 30 OF . 5000 p si Orig inal thick less Tbic kn.ess unde: r load Fina 1 thickues 3 Tliic kness redu ifion unac-I ~load Fina 1 tbicknes 3 reductior 10000 psi Oris inal thick less Tbic knees undeJ ? load Fina1 tbicknes 3 Tbie kness redu ition under 1 3.o ad ' Fina 1 thicknes 3 reduction 15000 psi OriR inal thick less Tbic kness unde r load Fina 1 thicknes 3 Thic knees redu it ion undei load Fina 1 thicknes 3 reductior Yield po int, psi .070" .052" .0045" 6.4 i* .0006" 9.4 7 .0140" 19.8 # .0214" 30.4 ^ .0059" 8.3 75 .0078" 11.0 7 .0158" . 22.2 io .0220" 31.0 f* .0050" 9.5 7> .0064" 12.0 7 .0083" 15.5 7 .0098" 18.4 7 .0066" 12.2 7 .0079" 14.6 7 c0096" ' 17.7 7 .0111" 20.3 7 24 7 23 7 .0700" 704817" .0580" '"."02X5" 30.7 7 .0120" 17.2 7 .0520" 70440" .0500" . OUoO'' 15.4 7 . 0O2O1' 3.9 7 .0710" .05,20" .0450" .0420" .0530" .04-95" .0&O* TOnXr------ 36.6 7 19.7 7 "ToIBot* .0025" 25.4 7 4.8 7 .0710" .0440" .0530" .0270" 38.0 io .0180" 25.4 # .0520" .0405" .0490" .0150" 22.8! 7 .0030" 5.8 7 50,000 50,000 VPD-189-0000475 MADE IK USA VG 2?/JI