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LIA09878
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LEAD INDUCTEES ASSOCIATION
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Octsbsr 11* 19i4
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iM-zysmTOss* rralite
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Erallte Is s blend of rynthatie bb end retina araiiebls la tea rarietie*. One is extruded or <~o**"rc*sioo Molded, followed by curlnj. At teaperstcres rangis* f*w 15c to 160 T this naterlel bc<* rubbery. The other variety is Injection added end is thermoplastic. It softens In the mb s teeperatcra rang* ** abora*
1 This naterlel is resistant to attack by aulfarlc sold in concentrations
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ap to 505C, Corrosion resistance, it is bettered, is essentially onsitered by increasing teopsrature, However, s Io f c both fores of this caUriel becoM rubbery
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or eoften et derated tesperatores, trlr corrosion resist*nc is s secondary consideration*
Ceefficlont of linear expansion it e,'prsxlMteljr 3bxlO"^ ln/tnVf *
or orr twice that of load*
trailte weighs appnoxlnately 0*32 lbs* par ft*
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FORKS lTllLULEt
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Xrslita production is still in tho process of rsflncaont and trin ability at present is soevhat United. fhon four to tlx weeks are required for dellrery of 100 ft* of 1-in* pipe* Eventually it *111 bo supplied in rigid tad ami-rigid fonts in eisea ranging fron J to 2 in* outside dimeter* In pips fora it aay bs bent to various radti end threaded for fitting*. It can be famished in 10 ft. lengths ealy.
COST!
* tee hundred fbot ef Kralito pipo In 10 ft. length* 0.957 la* I*D* x 1*315 in* 0.D* x 0.179 in. vail, d*igncd for operation at nernel teapwraturcs with 5Ctf aulfurls acid coats I90.0C*
Ibr eoapaxiaon tho coat of a ataller quantity of standard lead pipe reeoaaonded for tho eeso ua<i le quoUd* One hundred feet (continuous if desired) of lead pipe class SO U or 5) oonforrU^ to federal specification W-F-)?5j
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LIA09879
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Chemical Bulletin Bo, 2J
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October 11, ljh8
1 in, I.D, x IJiJ# in* C.E, x O.Ellt la* Mil thiekneee) nominal weight It lb*/ft, costs about #90.00.
Pries Is based on September 21 issue of American Itetal liarket which quotas load pipe at 22$9 per lb,
Bcltber quotation Includes costs of installation,
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Xhlla Krallte will most likely find its place in industry as s eorrosivw handling notarial it Is unlikely Mut it ill offer serious ocaprtltlod to load.
The basic costs are very rxsrly the saae, InstXlletlon costs set In
favor of load tinea it can ba fabricated in one continuous V 04th. Kralito is arailabl* in 10 ft. lengths only which have to be joined (7 threaded fittings* The danger of leakage at pipe fitting la always present but because of tbo cooperative structural weakness of Krallte this ihcrtc^ing Is especially signi ficant, Another fader favoring the coat of lead Installation is the high salvage value of lead. Practically none of the original coat can be recovered la a Krallts Installation*
Sine* it* forn restricts its use primarily to piping, the behavior of
Krallte at elevated temperat-ir- a, rfilch am well within the practical range for
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lead, la sufficient to dtsooumgc Its use as s substitute for lead piping.
Softening characteristics of Krallte Indicate that at temperature* around 1$0P 7
It may be occcasary to provide contineocs support to prevent sagging. At lower
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temperatures, since the materiel Is lighter than loM, support other than
overhead straps nay not bo neoded, liinuf.'cturcrs have net had enough netual
field experience to be able to predict accurately what nay happen to their
material under different Industrial service conditions,
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Krallte Is Halted to handling R^SOf, concentrations up to 50)C, Load
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la eonnonly used with Hj SOj , concentrations u.' to 961, Lead Is usad with 851
add at temperatures aa Ugh as 2f-0 P, well abort tba softening rwig* of
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Krallta, A comparatively Urge coefficient of expansion has long been a
property of lead that e.*ild not be 1 gmrrd by the derign engineer} Krallte ex
pands over twice as ouc'i an lead under the sans conditions, making the problem
of expansion that much rorc difficult*
Du# to the possibility of pluehioa, the us* of lead piping has beam restricted in the memfecturc of foodstuffs and beverages, Hera Krallta nay fit in very well,
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1, 0.8, Rubber Co,, Xech, Goods Wv,, Ml Hudson 8t,, lew fork, I. T. a. Interview b, Corrcxpondfooe
e Quotation
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