Bethlehem Steel ASTM A678 Grade B 3/16 to 1-1/2 in. thick, steel plate

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Bethlehem Steel ASTM A678 Grade B 3/16 to 1-1/2 in. thick, steel plate (discontinued **)
Categories:	Metal; Ferrous Metal; ASTM Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Carbon grade for plates made to a fine grain practice. The plate is heat treated by quenching and tempering to develop the high strength levels. The steel has high notch toughness. It is used in demanding structural, industrial and machinery applications where weight reduction is important and notch toughness is a design consideration. Information provided by Bethlehem Steel Corporation Data published in 1997. Bethlehem Steel in no longer in business.
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Physical Properties	Original Value	Comments

Density	7.80 g/cc	Typical of ASTM Steel

Mechanical Properties	Original Value	Comments
Hardness, Brinell	159 - 210	based on conversion from tensile strength
Hardness, Rockwell B	83 - 95	based on conversion from tensile strength
Tensile Strength at Break	80000 - 100000 psi
Tensile Strength, Yield	>= 60000 psi
Elongation at Break	>= 20 %	in 2", > 24" W
Bend Radius, Minimum	2.0 t	≤1-1/2" W; ASTM A6 PARA. S14
	2.5 t	>1-1/2 to 3" W; ASTM A6 PARA. S14

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.20 %
Copper, Cu	>= 0.20 %
Iron, Fe	>= 97.715 %
Manganese, Mn	0.70 - 1.35 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.50 %

**
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NBETH058 / 15417

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