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298 STANDARD SPECIFICATIONS FOR STRUCTURAL STEEL FOR SHIPS. 1. Steel shall be made by the open-hearth process. 2. The chemical and physical properties shall conform to the following limits: Properties considered. Structural steel. THe Marine REVIEW 1d clusive, tested as_ rolled shall bend co 180 degrees around a pin the diameter of which is equal to one and one-half times the thickness of the bar, without fracture on the outside of bend. Steel over 134 inches thick, tested Penge shall bend cold 180 degrees around a pin the diameter of which is equal to twice the thickness of the bar, without frac- ture on the outside of bend. Rivet steel. Steel castings. (Basic 0.04 per cent 0.04 per cent 0.05 per cent Phosphorus, max. ......+-+ {Acia 0.06 per cent 0.06 per cent 0.08 per cent Bulphur, (Mak. - sel ii ee cess Poe Ge veces we : 0.05 per cent =--=--seereeees pt eeee Ult. tensile strength, lbs. per sq. in. 55,000-65,000 48,000-58,000 60,000 ae Miclde PONE Shit pies cee yee oss tit. tens, str. 4 Ult. tens. str. y% Ult. tens. str. ( 1,500,000 1,500,000 Elong., min. per cent. in 8 in.{ ees (AKU Sivas CR) oes acs oe os lL Ulf. tens. str. Ult. tens. str S Elong. min. per cent in 2 in. (Fig. 2) seeeescceees : Character or PPACLULE. 64. On cae Silky Silky Silky or fine § i aad Cold bend without fracture...... edge. fat. 180° flat Oe ae For the purpose of these specifications, (f) Bending tests may be made by pres- the yield point shall be determined by the careful observation of the drop of the beam or halt in the gage of the testing machine. 3. In order to determine if the material conforms to the chemical limitations pre- scribed in paragraph 2 herein, analysis shall be made by the manufacturer from a_ test ty Kar 1g Bac. 2 ingot taken at the time of the pouring of each melt of steel, and a correct copy of such analysis shall be furnished to the engineer or his inspector. A check analysis may be made by the purchaser or his representative if desired, in which case an excess of 25 per cent above the required limits will be allowed. 4. Specimens for tensile and bending tests for structural and rivet steel, shall be made by cutting coupons from the finished product, which shall have both faces rolled and both edges milled to the form shown by Fig. 1, page 2; or with both edges parallel; or they may be turned to a diameter of 34-inch for a length of at least 9 inches, with enlarged ends. (a) Rivet rounds and small rolled bars shall be tested as rolled. 5. The number of tests will depend on the character and importance of the castings. 'Specimens shall be cut cold from coupons molded and cast on some portion of one or more castings from each melt or from the sink heads, if the heads are of sufficient size. The coupon or sink-head so used shall be annealed with the casting before it is cut off. Test specimens shall be of the. form shown: by Fig. 2. 6. Material which is to be used without annealing or further treatment shall be tested in the condition in which it. comes from the rolls. 'When material is to be annealed or otherwise treated before use, the specimens for tensile tests, representing such material, shall be cut from properly annealed or sim- ilarly treated short lengths of the full section of the bar. 7. At least one tensile and one bending test shall be made from each melt of steel as rolled. In case steel differing %-inch and more in thickness is rolled from one melt, a test shall be made from the thick- est and thinnest material rolled. Should either of these test specimens develop flaws, or should the tensile test specimen break outside of the middle third of its gaged length, it may be discarded and another test specimen substituted therefor i icase, a tensile test specimen does not meet the speci- fications, additional tests may be made. 8.. For material less than 5/16-inch and more than %-inch in thickness the following modifications will be allowed in the require- ments for elongation: (b) For each 1/16-inch in thickness be- low 5/16-inch, a deduction of 2% will be al- lowed from the specified percentage. (c) For each %-inch in thickness above ¥%-inch, a deduction of 1 will be allowed from the specified percentage. 9. Plates, shapes and bars less than %- inch thick shall bend as called for in- para- graph 2. (d) Steel 34-inch to 1% inches thick, in- sure or by blows. ' : 10. Angles 34-inch and less in thickness shall open flat, and angles %-inch and less in thickness shall bend _ shut, _cold, under blows of a hammer, without sign of frac- ture. This test will be made only when required by 'the inspector. 11. Finished material shall be free from injurious seams, flaws, cracks, defective edges, or other defects, and shall have a smooth, uniform, workmanlike finish. : 12. Test specimens and _ every finished piece of steel shall be stamped with the melt number, except that small pieces may be shipped in bundles securely wired to- gether, with the melt number on a metal tag attached. August, 1909 TRADE NOTES. David Kahnweiler's Sons have removed their offices to 260 Front street, cor. Dover street New York. : Dean Bros., Indianapolis, Ind. have just put out a catalog describing their hydraulic pressure pumps. _ The Joseph Dixon Crucible Co., Jersey City, N. J., has just issued a tasty booklet on the proper care of belts. : C. W. Hunt Co., West New Brighton, New York, have issued a bulletin devoted to their mast gaff automatic railway for the retail dealer. The H. E. Boucher Manufacturing Co. an- "nounce the removal of their office and shops from 91 Maiden Lane to 20 Fulton street, New York. ' Henry J. Gielow, engineer and naval archi- tect, has removed to 52 Broadway, New York, one door north of his former address. The Independent Pneumatic Tool Co. have removed their general office from the First National Bank building, Chicago, to the new Thor building at 1307 Michigan av., Chicago. C. O. Bartlett & Snow Co., Cleveland, have just issued catalog No. 28, descriptive of their coal and ash handling machinery. The cata- log contains descriptions of the various fuel- ing devices which this company has installed at lake ports during the past few years. The Falls Hollow Staybolt Co., Cuyahoga Falls, O., recently received a large order for Falls Hollow Staybolt iron from one of the largest railway systems in England. The or- der is in the nature of a preliminary test, with a view of its adoption on their entire system. The American Bitumastic Enamels Co., 322 Delaware avenue, Philadelphia, Pa., sole agents in the United States for Bitumastic prepara- tions for painting inner bottoms and bunkers 13. A variation in cross section or weight of ships, are about to open branch offices in PLATES %4 INCH AND OVER IN THICKNESS. Nominal Width of plate. Thickness weights ordered. Lbs. per 75 ins. and up. 100sns and ap.< Inches. sq. ft. Up to 75 ins. to 100 ins. to 115 ins. Over 115 ins. yy 10.20 10. percent 14. percent 18 per cent as 1215S 8. percent 12s percent 16° per cent x% 15.30 7 ~per cent 10. percent 13. per cent 17 per cent us 17.85 6: percent 8... percent 10..2per-cent 13 per cent yy 20.40 5. per. cent 7 per cent 9 percent 12 per cent ts 22.95 4¥Y, per cent 674 per cent 84 per cent 11 per cent % 25.50 4 percent 6 percent S. per cent 10 per cent Over &% ees 3% per cent 5 per cent 6% per cent 9 per cent PLATES UNDER % INCH IN THICKNESS. \ i -- --- 70 Width of plate. Thickness ordered. Nominal weights. 50 ins. and up : Inches. Lbs. per sq. ft. Up to 50 ins. to 70 ins. Over 70 ins. Y% up to 32 DELO. to 6:37 10 percent 15. percent 20 per cent da up to 5 6:37 10° 77.65 8% per cent 12% per cent 17 per cent te up to 4 7.65 to 10.20 7 per cent 10 percent 15 per cent of each piece of steel of more than 2%4 per cent from that specified will be sufficient cause for rejection, except in case of sheared plates, which will be covered by the following permissible variations, which are to apply to single plates. WHEN ORDERED TO WEIGHT. Plates 12% pounds per square foot or heavier: (g) Up to 100 inches wide, 214 per cent above or below the prescribed weight. (h) 100 inches wide and over, 5 per cent i above or below. : Plates under 12%4 pounds per square foot: (1) Up to 75 inches wide, 214 per cent above or below. 75 inches and up to 100 inches wide, 5 : per cent above or 3 per cent below. (j) 100 inches wide and over, 10 per cent above or 3 per cent below. WHEN ORDERED TO GAGE. Plates will be accepted if they measure not more than 0.01 inch below the ordered sthick- ness. An_ excess over the nominal weight corre- sponding to the dimensions on the order, will be allowed for each plate, if not more than Bs see. oe the pone tables, one cubic inch of rolled steel being assumed t i 0.2833 pound. . ao) ose 14. The inspector representing the purchaser shall have all reasonable facilites afforded . him by the manufacturer to satisfy him that the finished material is furnished in accordance with these specifications. The manufacturer 'shall furnish a suitable testing machine for testing the specimens, as well as prepare the pieces for the machine free of cost. at All tests and inspections shall be made at the place of manufacture, prior to shipment. Cleveland and other points on the great lakes. This company has offices in New York and San Francisco and has done considerable work along the coasts, having the distinction of having coated the entire internal surfaces of all the ships belonging to the Cunard line, the International Mercantile Marine (Co., and the American-Hawaiian line, as well as the inland passenger steamers Robert Fulton, Princeton, Trojan and Renselaer. 'The turbine steamers Yale and Harvard, of the Metropolitan line, and the Governor Cobb, Belfast and 'Calvin Austin, of the Eastern Steamship Co., are coated with patent Bitumastic commodities. The preparation is also extensively used on govern- ment vessels, having been applied on _ the dredges Culebra, Ancon, Galveston and Savan- nah, 10 mine boats and four mine p!anters for the quartermaster's department, and the col- liers Mars, Vulcan and Hector. This firm has been awarded by the Franco-British exhibiton two gold medals in classes pertaining to the mercantile marine and civil engineering for excellence as preservatives for valuable iron and steel structures from corrosion, and have also received diplomas of honor from. the G'asgow East End exposition in 1904 and the Milan exposition in 1906. SEALED PROPOSALS will be received. at the office of the Light-House Board, Washing- tony D.C, until 2 -aiclock p, m., .Sepfember 10, 1909, and then opened, for furnishing the materials and labor of all kinds necessary for the construction, equipment and_ delivery of the twin-screw, steel, steam light-house tender Camellia, in accordance with specifica- tions, copies of which, with blank proposals and other information, may be had upon appli- cation to the Light-House Board, Washington, D.C,