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TECHNICAL INFOL. LA.? I ON UN BUILDING LlATELInLS

2 IB 1-1-2 FOB USE IN 2 IS DESIGN OF LOV-CuST HOUSING

THE NAT IOxIAL B ij XAU ON

UNITED STG-TLS DEPABTNENT

’'WASHINGTON, D.

STANDABDS

OH COIL SHOE

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Larch 7 , Iu5o .

LIFE OH NlN-ULGN.OUS SPLEEN ’ VUE CLOTH

This is a Brief digest of l;e search Paper EP603, (June 1935)

"Atmos' her ic Exposure Tests on Non-Ferrous Screen V.'ire Cloth",

By G. hi liar a '«,uiclc, covering tests conducted By the National

ureau of standards in cooperation with the American Society for

e sting Materials.

The data presented cover at no spheric -expo sure tests on non- fenous screen wire cloth of seven different materials mounted

in three types of frames —copper 30" x 36", wood 30" x. 36", wood

12" x IT" —exposed for a period of approximately nine years

(November 1925 to January 1935) to atmospheric conditions representing heavy industrial contamination, temperate seacoast with

some industrial contamination, tropical seacoast with some industrial contaninat ion, ana normal inland, at the locations indicated in the table shown on page 2.

Laboratory accelerated-corrosion tests, consisting of ex- posure of material to salt spray, and intermittent immersion in

salt solutions and in dilute sulphuric acid, were also conducted

tc determine whether or not such tests could be used as a means

or determining the expected life of the material in actual service. x.s the results of these accelerated-corrosion tests were

not consistent with the results ol the atmospher ic- expo sure tests

at any of the locations, they could not be used to predict the

behavior of the material in service and for that reason are not

included here.

In both series of tests, specimens were fudged by appearance

and tensile strength.

A summary of results of the atmospheric corrosion tests

appears on the following page.

xAvailable from Super intendent of Documents, Government

Printing Office, Washington, D. 0. (Trice 10c)

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