Slgn11ture 4. Rev No. o Organization/Charge Code 23440/DTNE2 This report docuoonta the results of the corroalon t .. t. that were porfonoed to aid In the selection of the construction ... terlals for .. ltl•function waste tank. to be built In the u.s. Departlllnt of Energy Hanford Site. Two alloys were tested: 304L and Alloy 20 austenitic stalnl .. s st .. l. The test _Ia were aquooua solutions fo ..... lated to represent the .xtr .... of the ch .. lcal caopooltions of wast. to be stored in the tanks. The results suomarized by alloy are a. follows: For 304L the tests showed no stress-corrosion cracking in any of the nine test solutions. The tests showed pitting in one of the solutions. There were no indications of any weld heat-tint corrosion, nor any sign of preferential corrosion in the welded .r •••• For Alloy 20 the tests showed no general, pitting, or stress-corrosfon cracking. One crevice corrosion coupon cracked at the web between. hole and the edge of the coupon in one of the solutions. Mechanical teats showed some .possible crack extension in the Sa.8 solution. Because of the failure of both alloys to Meet test acceptance criteria, the tank wa.te chemistry will have to be restricted or an alternative alloy tested. 8. DISCLAIMER • This report .... prepared as en occount of work sponsored by an agency of the Unl ted Stat .. Gover.-.ot. .el ther the uni ted States Gover.-nt nor any agency thereof, nor any of thel r elllployees, nor any of their contractors, subcontractors or the;r eRlployees, IMkes any warranty, express or fJllplfed, or as8U11e8 II'IV legal l labtl Ity or responsibil ity for the accuracy, c"""latenes., or any third party'. use or the result. of such use of any info".tion, apparatus, product, or process disclosed, or represents that its use wouLd not infringe privately owned rights. Reference herein to any specific cORllftercfal product, prOCHe, or service by trade name, tredeamrk, lllllnufacturer, or otherwi se, does not neeessari l y constitute or iq)ly its endorsement, recomnendatfon, or favoring by the United States Government or any agency thereof or its contractors or subcontractors. The views and opinions of authors expressed herein do not necessar-i Ly state or-reflect those of the Unit States Government or a a enc thereof A•6400•073 (11/91) (EF) WEF124 lD. RELEASE STAMP THIS p,' ~~ '''rr-'iTIONALLY
