Physical Properties Class 1 and 2

Alloy Physical Properties

Minimum Physical Properties for Copper Alloys Class 1 & 2

GROUP A COPPER BASE ALLOYS *		HARDNESS ROCKWELL (HRB) **		CONDUCTIVITY % I.A.C.S. ***		ULTIMATE TENSILE STRENGTH ksi		YIELD STRENGTH ksi 0.5% EXTENSION UNDER LOAD		ELONGATION % IN 2” OR 4 DIAMETERS
SIZE RANGE		CLASS		CLASS		CLASS		CLASS		CLASS
IN	MM	CLASS 1 C15000	CLASS 2 C18150 C18200	CLASS 1 C15000	CLASS 2 C18150 C18200	CLASS 1 C15000	CLASS 2 C18150 C18200	CLASS 1 C15000	CLASS 2 C18150 C18200	CLASS 1 C15000	CLASS 2 C18150 C18200

 

DIAMETER—ROUND ROD STOCK (WROUGHT)
UP TO 1”	UP TO 25	65 HRB	75 HRB	80%	75%	60	65	45	55	13%	13%
OVER 1” TO 2”	OVER 25 TO 51	60 HRB	70 HRB	80%	75%	55	59	42	50	14%	13%
OVER 2” TO 3”	OVER 51 TO 76	55 HRB	65 HRB	80%	75%	50	55	40	45	15%	13%
OVER 3” TO 3-1/2”	OVER 76 TO 89	50 HRB	65 HRB	80%	75%	45	48	40	42	15%	13%
OVER 3-1/2” TO 4”	OVER 89 TO 102	48 HRB	60 HRB	80%	75%	42	45	35	39	15%	13%
OVER 4” TO 4-1/2”	OVER 102 TO 114	-	60 HRB	-	75%	-	45	-	39	-	13%

 

THICKNESS - SQUARE, RECTANGULAR AND HEXAGONAL BAR STOCK (WROUGHT)
UP TO 1”	UP TO 25	55 HRB	70 HRB	80%	75%	55	59	40	45	13%	13%
OVER 1”	OVER 25	50 HRB	65 HRB	80%	75%	50	55	38	40	14%	13%

THICKNESS—FORGINGS
UP TO 1”	UP TO 25	55 HRB	65 HRB	80%	75%	60	55	--	--	12%	13%
OVER 1” TO 2”	OVER 25 TO 51	50 HRB	65 HRB	80%	75%	50	55	--	--	13%	13%
OVER 2”	OVER 51	50 HRB	65 HRB	80%	75%	50	55	--	--	13%	13%

CASTINGS
ALL	ALL	NA	55 HRB	NA	70%	NA	45	NA	20	NA	12%

 

RWMA Table 1.8.4
Data extracted from RWMA Bulletin 16 Table 1.8.4
Note: Acceptance based on Hardness, Conductivity, Tensile Strength, Yield Strength and Elongation data is available for reference
* All materials are in a fully heat treated condition unless otherwise specified.
** Round Rod tested at mid radius in accordance with ASTM test method E18.
*** Conductivity = 1/.0058 (Resistivity) where: Conductivity is expressed in the units % IACS and resistivity is expressed in the units mWcm.