TOOL STEEL EOR THE UNITED STATES NAVY. 367 



16. Modification of tests. — Any or all the above tests may be modified 

 at the discretion of the engineer officer. 



17. Samples furnished by bidders. — Each bidder shall furnish with his 

 bid one bar of steel as follows : — 



Tungsten — 



Class I. — I by ij inches by 5 feet long. 

 *Class I. — 3f inches round by 24 inches long. 



Class 2. — f by 1 5 inches by 5 feet long 

 Carbon — 



Class I . — |-inch diameter rod, 2 feet long. 

 *Class I. — 2 1 inches square by 6 feet long. 



Class 2. — ij-inch diameter rod, 2 feet long. 

 *Class 2. — if inches round, 24 inches long. 



Class 3. — |-inch octagon rod, 5 feet long. 



Class 4. — 2 -inch diameter rod, 2 feet long. 



18. All samples must be delivered (unless otherwise specified in the 

 proposal) to the General Storekeeper, Building No. 4, Navy Yard, Phila- 

 delphia, Pa., prior to the time fixed for opening the bids. Failure to comply 

 with this requirement will eliminate the bid from consideration. The 

 sample bar will be delivered by the general storekeeper to the engineer 

 officer for him to direct the selective tests. 



Samples delivered late will not be received and the bids will not be 

 considered. 



19. *The requirements indicated by asterisk apply only to tool steel 

 required for delivery to the Navy Yard, Washington, D. C. 



20. Treatment of samples. — Each bidder must state in his bid the 

 treatment to which the material is to be subjected in order to get, in his 

 opinion, the best results. 



21. Recommendation of award. — The right is reserved to reject any or 

 all bids. Failure to comply with all the requirements will eliminate the bid 

 from consideration. 



22. The engineer officer will, after the prescribed tests have been made, 

 recommend the award for contract for the steel or steels which, in his opinion, 

 it is to the best interest of the government to purchase, due consideration 

 being given to the cost of the material. The relation of the physical test 

 and the price of the material will be the basis for selection. 



23. Alternate proposals. — Bidders may submit proposals on steel which 

 differs from the composition specified, provided this is clearly stated in their 

 bids, and provided they furnish the engineer officer with the exact chemical 

 composition of the material. This information will be considered confi- 



