STANDARD SPECIFICATIONS FOR STRUCTURAL STEEL FOR BUILDINGS 



OF THE 



AMERICAN SOCIETY FOR TESTING MATERIALS. 

 ADOPTED AUGUST 25, 1913. 



I. MANUFACTURE. 



I. Process, (a) Structural steel, except as noted in Paragraph (6), may be made by the 

 IIKT or the open-hearth procv 



(b) Rivet steel, and steel for plates or angles over J in. in thickness which are to be punched, 

 shall be made by the open-hearth process. 



II. CHEMICAL PROPERTIES AND TESTS. 



2. Chemical Composition. 

 chemical composition: 



The steel shall conform to the following requirements as to 



Phos P horus( 



Sulphur 



STRUCTURAL STEEL. 



not over o.io per cent 

 " " 0.06 



RIVET STEEL. 



not over 0.06 per cent 

 0.045 



3. Ladle Analyses. An analysis to determine the percentages of carbon, manganese, phos- 

 phorus and sulphur shall be made by the manufacturer from a test ingot taken during the pouring 

 of each melt, a copy of which shall be given to the purchaser or his representative. This analysis 

 shall conform to the requirements specified in Section 2. 



4. Check Analyses. Analyses may be made by the purchaser from finished material re- 

 presenting each melt, in which case an excess of 25 per cent above the requirements specified in 

 Section 2 shall be allowed. 



5. Tension Tests, 

 properties: 



III. PHYSICAL PROPERTIES AND TESTS, 

 (a) The material shall conform to the following requirements as to tensile 



(b) The yield point shall be determined by the drop of the beam of the testing machine. 



6. Modifications in Elongation, (o) For structural steel over J in. in thickness, a deduction 

 of I from the percentage of elongation in 8 in. specified in Section 5(0) shall be made for each 

 increase of J in. in thickness above $ in. 



(ft) For structural steel under ^ in. in thickness, a deduction of 2.5 from the percentage of 

 elongation in 8 in. specified in Section 5(0) shall be made for each decrease of & in. in thickness 

 below ^ in. 



7. Bend Tests, (a) The test specimen for plates, shapes and bars shall bend cold through 

 1 80 deg. without cracking on the outside of the bent portion, as follows: For material J in. or under 

 in thickness, flat on itself; for material over J in. to and including 1} in. in thickness, around a pin 

 the diameter of which is equal to the thickness of the specimen; and for material over ij in. in 

 thickness, around a pin the diaipeter of which is equal to twice the thickness of the specimen. 



(6) The test specimen for pins and rollers shall bend cold through 1 80 deg. around a i-in. 

 pin without cracking on the outside of the bent portion. 



(c) The test specimen for rivet steel shall bend cold through 180 deg. flat on itself without 

 cracking on the outside of the bent portion. 



1 See Section 6. 



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