PROPERTIES AND USES OF NICKEL STEEL. 689 
Tests of Nickel Steel manufactured in Great Britain.— 
A valuable paper was contributed by Mr. William Beard- 
more to the Institution of Naval Architects in April 1897, 
which deals with tests of nickel steel and its application in 
steel forgings, more especially in propeller shafts, railway 
cranks, axles, crank pins, tyres, &c., also in plates for ship- 
building. The following table gives the results of Mr. 
Beardmore’s tension tests on carbon and nickel steel, showing 
the characteristic properties of the latter material relatively 
to carbon steel :— 
Comparison of the Yield Powt and Breaking Strain of 
Nickel and Carbon Steel. 
4 . Carbon Steel. Nickel Steel. 
oo Ds 
42 | Ultimate | Yield point Ultimate | Yield point 
‘3° =| strength, tons| in tons per | strength, tons | in tons per 
= per squareinch.| square inch. /per square inch.| square inch. 
= PEEL 13°5 51°3 29°5 
= 28°3 13°6 53°9 28°7 
3 27°6 13°7 54°1 28°6 
rt 97°5 13-9 Oe earalt 29-2 
3 27°7 14°0 -52°4 30-4 
a 28°2 14°5 51°8 30°6 
3 28°5 14°1 52°35 | 29-0 
4 28°3 14°3 49°6 28°9 
3 28°5 14°0 50°5 28°5 
3 27-9 14°0 51:0 28:4 
1 27°5 14°5 48°7 28°3 
{ 
Here the yield point of nickel steel is equal to the 
ultimate strength of carbon steel. 
Mr. Beardmore states that nickel steel can be bent, 
punched, drifted, and welded successfully; he also gives 
some experiments by Mr. Whyte of Leith Docks on the 
behaviour of nickel steel, mild carbon steel, and wrought 
iron when exposed to the corrosive action of sea-water for 
one year, in which the loss of weight was as follows : — 
Nickel steel 1-36 per cent. ; carbon steel 1 - 72 percent. ; 
wrought iron 1-89 per cent. 
A large number of tests of nickel steel are recorded in 
Mr. Hadfield’s paper on “ Alloys of Iron and Nickel’ Proc. 
Inst. C.E., Vol. CXXXVIII.), which is well worthy of careful 
study. 
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