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ASTM A320/A320M 2010a Table1 Mechanical Requirements

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ASTM A320/A320M 2010a Table1 Mechanical Requirements

Mechanical Requirements
Class and Grade	Diameter,in	Heat Treatment	Minimum Tempering Temperature °F	Tensile Strength, min,ksi	Yield Strength, min,ksi (0.2% offset)	Elongation in 2 in. Min,%	Reduction of Area, min,%	Hardness max




Ferritic Steels
L7,L7A,L7B L7C,L70, L71,L72,L73	2-1/2 and under	quenched and tempered	1100	125	105	16	50	321 HBW or 35 HRC


L43	4 and under	quenched and tempered	1100	125	105	16	50	321 HBW or 35 HRC


L7M	2-1/2 and under	quenched and tempered	1150	100	80	18	50	235 HBW or 99 HRB


L1	1 and under	quenched and tempered		125	105	16	50	…


Austenitic Steels
Class 1:B8, B8C,B8M, B8P,B8F, B8T,B8LN, B8MLN	all diameters	carbide solution treated		75	30	30	50	223 HBW or 96 HRB




Class 1A: B8A,B8CA, B8MA,B8PA, B8FA,B8TA, B8LNA, B8MLNA	all diameters	carbide solution treated in the finished condition		75	30	30	50	192 HBW or 90 HRB





Class 2:D8, B8C,B8P, B8F,B8T	3/4 and under over 3/4 to 1,incl over 1 to 1-1/4,incl over 1-1/4 to 1-1/2,incl	carbide solution treated in strain hardened		125 115 105 100	100 80 65 50	12 15 20 28	35 30 35 45	321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC




Class 2:B8M	3/4 and under over 3/4 to 1,incl over 1 to 1-1/4,incl over 1-1/4 to 1-1/2,incl	carbide solution treated in strain hardened		110 100 95 90	95 80 65 50	15 20 25 30	45 45 45 45	321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC

Pub Time : 2017-08-11 17:47:31 >> News list

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