A Cold- 

 drawn Fabric 



Distinctive 

 Features 



High 

 Elastic Limit 



The illustrations clearly depict the difference between the two. It is this cold working ot 

 the steel at an exceedingly high speed that is the distinguishing feature of the "Steelcrete" 

 Expanded Metal. IN ONE CASE THE METAL HAS BEEN DEPLOYED, WHILE IN 

 THE SECOND CASE THE METAL HAS BEEN COLD DRAWN TO ITS MESH 

 SHAPE. The true sheet can be readily distinguished from the false product by the regu- 

 larity of its strands and the better mechanical appearance of the material, but the most sig- 

 nificant difference to be noted is in the stiffness. It is possible for a man to lift a sheet of 

 "Steelcrete" Expanded Metal twelve feet long from one end by holding that end against the 

 body, the hands gripping the strands three feet away, the remainder of the sheet extending 

 out horizontally with an imperceptible droop at the far end. This is not possible in the 

 false product. The advantage of this stiffness will be taken up more fully in a subsequent 

 paragraph. 



The effect of the process on the steel in making "Steelcrete" Expanded Metal is not unlike 

 the cold twisting of a square bar, the cold rolling of a steel shape, or in fact the cold working 

 of any piece of steel by which, due to a strange phenomenon characteristic of this metal, the 

 quality is improved, the ultimate strength increased, and its elastic limit more than doubled. 

 The original plate is of soft steel containing a low percentage of carbon, which is another way 

 of saying that it is obtainable in an absolutely uniform quality. In the finished product the ulti- 

 mate strength has been raised 20 to 50 per cent., and its elastic limit increased by 100 per cent. 



From the very beginning of reinforced concrete work the success of Expanded Metal as a 

 reinforcement has been continuous. Innumerable tests have been made, and invariably the re- 

 sults have proved better than the calculations. "Steelcrete" Expanded Metal has three dis- 

 tinctive features which make for its superiority as a reinforcement for concrete. These feat- 

 ures are entirely unique with the material and not encountered in any other fabric. 



(1) The cold working of the steel in the process of manufacture, which has been briefly 

 referred to, increases the elastic limit of the steel about 100 per cent. "Steelcrete" Expanded 

 Metal is, strictly speaking, a material with a high elastic limit. This ranges from 55,000 to 

 65,000 Ibs. per sq. in. The value this gives as a concrete reinforcement will be recognized by 

 all users of this class of material. In addition to this great advantage is the guarantee in uni- 

 formity of the material due to the soft steel plate from which the fabric is made. A high elastic 

 limit is usually synonymous with uncertainty. In "Steelcrete" Expanded Metal we have a ma- 

 terial possessing a high elastic limit, and at the same time a guaranteed uniformity of quality. 



