RG7 (CC493K)Tin Bronze Alloy

Similar or equivalent specification

CDAASTMSAEAMSFederalMilitaryOther

CC493K	B505 B505M	J461 J462		, E7; , Comp 12	MIL-B-11553, Comp 12	Bearing Bronze

Chemical composition

Cu%1Pb%Sn%Zn%Fe%P%Ni%1,2Al%S%Sb%Si%

Chemical composition according to ASTM B505/B505M-23 1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co. Note: Cu + sum of named elements, 99.0% min. Single values represent maximums.
81.00- 85.00	6.00- 8.00	6.30- 7.50	2.00- 4.00	0.20	1.50	1.00	0.005	0.08	0.35	0.005

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)

CC493K	70	0.322

Mechanical properties

Tensile strength, minYield strength, at 0.5% extension under load, minElongation, in 2 in. or 50 mm minBrinell hardness (500 kg load)Remarks




ksiMPaksiMPa%typical BHN 

Mechanical properties according to ASTM B505/B505M-23