44 STANDARD SPECIFICATIONS 



(a) For each ^ inch in thickness below ^ in. a deduction 

 of 2-J will be allowed from the specified percentage. 



(6) For each -J- in. in thickness above } in. a deduction of 

 1 will be allowed from the specified percentage. 



I7Q.J Bending Tests. Bending tests may be made by 

 pressure or by blows. Plates, shapes, and bars less than 1 in. 

 thick shall bend as called for in Par. 176. 



Full-sized material for eye-bars and other steel 1 in. thick 

 and over, tested as rolled, shall bend cold 180 degrees around a 

 pin, the diameter of which is equal to twice the thickness of 

 the bar, without any fracture on the outside of bend. 



Angles J in. and less in thickness shall open flat, and angles 

 i in. and less in thickness shall bend shut, when cold, under 

 blows of a hammer, without sign of fracture. This test will be 

 made only when required by the inspector. 



i8o. Nicked Bends. Rivet steel, when nicked and bent 

 around a bar of the same diameter of the rivet rod, shall give 

 a gradual break and a fine, silky, uniform fracture. 



181. Chemical Analyses. Chemical determinations of the 

 percentages of carbon, phosphorus, sulphur and manganese shall 

 be made by the manufacturer from a test 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. Check 

 analyses shall be made from finished material, if called for by the 

 purchaser, in which case an excess of 25 per cent, above the 

 required limits will be allowed. 



182. Form of Specimens. 



(a) Plates, Shapes and Bars: Specimens for tensile and 

 bending tests for plates, shapes and bars shall be made 



J"~ 

 About 2" 



>>i<- 8 Spaces ffi 1 >M< 

 j< About 18 >j 



FIG. 3. 

 by cutting coupons from the finished product, which 



