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Stewart & Stevenson Gets Navy Contracts Totaling $23.7 Million Stewart & Stevenson Services, Inc. has received contracts total- ing $23,725,000 from the U.S. Navy, providing ship's service auxiliary power for three classes of vessels. Stewart & Stevenson will sup- ply Detroit Diesel Allison, gas- turbine-powered, 2,500-kw gener- ator sets for the Navy's new Aegis cruiser. The Navy's initial $8,375,000 contract is to provide three of the generator sets for each of the first two cruisers. The Aegis cruisers are the United States' most capable anti-air serv- ice combatant. The mission of the Aegis cruiser is to operate effec- tively in the presence of air, sur- face, and subsurface threats, with strike, antisubmarine, or amphib- ious forces. Stewart & Stevenson has also received a $3,150,000 follow-on contract from the Navy to pro- vide three 2,000-kw Detroit Diesel Allison gas turbine generator sets for the new Spruance-class de- stroyer. Stewart & Stevenson has provided the generator sets on all Spruance-class destroyers for the U.S. Navy. A $12,200,000 follow-on con- tract has also been awarded to Stewart & Stevenson to provide ship's service auxiliary power for six new Oliver Hazard Perry class, missile-launching patrol frigates, each utilizing four 1,000-kw die- sel-powered generator sets. Stew- art & Stevenson earlier has pro- vided generator sets for 43 of the Navy's frigates in the Perry class. In addition, the present option agreement allows the prime con- tractor to order generator sets up to 28 additional sets under this multiyear procurement program. Armco Announces New Submerged Arc Weld Wire —Literature Available A new submerged arc chrome- moly welding wire, called W-22, is available from the Western Steel Division of Armco. Pro- duced by Armco to the Ameri- can Welding Society Specification A5.23, Classification EB3, W-22 is a low-carbon, alloy steel wire containing 2.75 percent chromium and 1.00 percent molybdenum. It provides matching alloy weld de- posits, when used with neutral fluxes, to join the 2% chrome-1 moly steel — plates, pipings, and forgings. Deposits made with W-22 are designed to meet AWS Classifi- cation EB3 in A5.23 Table 2, and normally are in the 90-ksi tensile strength range. Steel specifications where W-22 is used include ASTM and SA A 387 Class 22, A671 Class 22 or A335 P22 pipe, and F22 and WP22 forgings. When specified, Armco W-22 can be provided to meet the ASME SFA Boiler and Pressure Vessel Section III for nuclear ma- terial. Standard wire diameters of W-22 are 5/64, 3/32, 1/8, 5/32, and 3/16 inches. The grade is available in 60-pound coils and standard pay-off drums, or in 30- pound and 200-pound coils upon inquiry. This new weld wire is the lat- est in an Armco family of sub- merged arc welding wires. Eight different grades ranging from W-3 to W-25 provide a selection of compositions which, when used with the proper flux and welding procedures, can meet the varied needs of designers and fabrica- tors for strength, ductility, and impact toughness in submerged arc weldments of carbon, alloy, high-strength low-alloy, and heat- treated carbon and alloy steels. For more information on this new welding wire, write to Don- ald Frisby, Armco, Western Steel Division, 1455 West Loop South, Houston, Texas 77027. U)[H[£]W[IKI status UNI-PAK™ is the unique single-package inorganic zinc rich coating proven successful in the fight against corrosion in a wide range of marine and industrial applications. UNI-PAK offers all the benefits of a 2-package material- ready-mixed in a single container—pro- viding 82.5% metallic zinc in the dried film and ex- cellent early water resistance. UNI-PAK inorganic zinc coating results in a smooth cured film, uniform incolorandappearancewhichcan be applied with either conventional or airless equipment For information about the success of UNI-PAK's performance—or to inquire about Mobil's com- plete line of high performance coatings—contact your Mobil representative today or write to Mobil Chemical, Maintenance and Marine Coatings Department, P.O. Box 250, Edison, N.J. 08817. Mobil Chemical Company MAINTENANCE & MARINE COATINGS DEPARTMENT Edison, New Jersey Kankakee. Illinois Beaumont. Texas Los Angeles area/Azusa. California I MM Mobilzinc The unique inorganic zinc primer 40 Maritime Reporter/Engineering News
