 | John Butler Johnson - 1895 - 444 halaman
...character, and specimens broken in a testing machine shall show a tensile strength of not less than 60,000 pounds per square inch, and an elongation of 20 per cent, in eight diameters. 10:. Finished bolts and nuts of Tobin or Phosphor bronze may be tested in the same manner... | |
 | John Butler Johnson - 1895 - 440 halaman
...character, and specimens broken in a testing machine shall show a tensile strength of not less than 60,000 pounds per square inch, and an elongation of 20 per cent. in eight diameters. io:. Finished bolts and nuts of Tobin or Phosphor bronze may be tested in the same manner... | |
 | William Macfarland Patton - 1895 - 1864 halaman
...obtained having a tensile strength of 35 tons = 78,400 pounds, and an elastic limit of 20 tons = 44,800 pounds, per square inch, and an elongation of 20 per cent in 8 inches of length. Such steel would endure a working stress of 8 tons = 17,920 pounds per square inch.... | |
 | Chicago Sanitary District. Board of Trustees - 1898 - 808 halaman
...MATERIAL. WROUGHT IRON. Rioct Iron. в. All iron used for rivets shall have an ultimate tensile strength of not less than 48,000 pounds per square inch, an elastic limit of at least 2B. Out) pounds per square inch, and an elongation of at least twenty (20) per cent in eight... | |
 | Chicago Sanitary District. Board of Trustees - 1900 - 918 halaman
...presented. QUALITY OK MATERIAL. wnorOHT IKON. 6. All iron used shall have an ultimate tensile strength of not less than 48,000 pounds per square inch, an elastic limit of at least 26,000 pounds per square inch, and ¡in elongation of at least twenty (20) per cent in eight... | |
 | Baldwin Locomotive Works - 1900 - 464 halaman
...each heat used in filling our orders should, when tested, have an ultimate tensile strength of 80,000 pounds per square inch, and an elongation of 20 per cent., in a test section originally 2 inches long. Blooms will not be accepted that show an ultimate tensile... | |
 | New York (N.Y.) - 1901 - 186 halaman
...copy of the results of tests, such as he may direct shall be made. Sec. 21. — Structural Material. Wrought Iron. All wrought iron shall be uniform in...ultimate tensile resistance of not less than 48,000 Ibs. per square inch, an elastic limit of not less than 24,000 Ibs. per square inch, and an elongation... | |
 | Chicago Sanitary District. Board of Trustees - 1902 - 864 halaman
...may have occurred. Wrmiglit Iron. 8. All wrought iron used shall have an ultimate tensile strength of not less than 48,000 pounds per square inch, an elastic limit of at least 26,000 pounds per square inch, and an elongation of at least 20 per cent In eight inches,... | |
 | 1902 - 744 halaman
...annealed, has been used largely for rifle and gun barrels. This steel has an elastic limit of 80,000 pounds per square inch and an elongation of 20 per cent, in test bars % inch in diameter and 2 inches long. Similar material, but differently treated, and used... | |
 | Brookline (Mass.). - 1903 - 142 halaman
...of the results of tests, such as he may direct shall be made. SECT1ON 10. Structural Material. — Wrought Iron. — All wrought iron shall be uniform...24,000 pounds per square inch, and an elongation of twenty per cent. in eight inches, when tested in small specimens. Steel. — All structural steel shall... | |
| |
Wrought Iron. All wrought iron shall be uniform in character, fibrous, tough and ductile. It shall have an ultimate tensile resistance of not less than 48,000- pounds per square inch, an elastic limit of not less than 24,000 pounds per square inch, and... 
