C64200 Silicon Aluminum Bronze / C642 Bronze

C64200 Silicon Aluminum Bronze is an excellent alloy when you require the strength and anti-corrosive abilities associated with aluminum bronze alloy but need the ease of machinability of a bearing bronze. C642 Silicon Aluminum Bronze is the alloy of choice. C642 has a machinability rating of 60 with a tensile strength ranging from 75 - 90 ksi. C642 is a wrought alloy which improves its general size consistency compared to similar cast products. This improved consistency reducing machining losses and decreases overall product cost.

Shapes

Solid Round Bar Stock

Applications

• Valve Guides
• Landing Gear Bushings
• Marine Hardware
• Fasteners
• Gears
• Cams
• Pole Line Hardware

Specifications

Chemical Composition
(%max., unless shown as range or min.)

	Cu(1)	Al	As	Fe	Pb	Mn	Ni(2)	Si	Sn	Zn
Min./Max.	Rem.	6.3-7.6	.09	.30	.05	.10	.25	1.5-2.2	.20	.50
Nominal	91.2	7.0	-	-	-	-	-	1.8	-	-

Mechanical Properties (measured at room temperature, 68 F (20 C)

Temper	Section Size	Cold Work	Typ/ Min	Temp	Tensile Strength	Yield Strength (0.5% ext. under load)			El	Rockwell Hardness					Brinell Hard.		Shear Strength	Fatigue Strength*
	in.	%		F	ksi	ksi			%	B	C	F	30T		500	3000	ksi	ksi
	mm.			C	MPa	MPa											MPa	MPa
Rod
M30	0.75	0	TYP	68	75	35			32	77	-	-	-		-	-	-	-
	19			20	517	241			32	77	-	-	-		-	-	-	-
H04	1.5	10	TYP	68	93	60			26	90	-	-	-		-	-	-	-
	38			20	641	414			26	90	-	-	-		-	-	-	-
H04	0.75	15	TYP	68	102	68			22	94	-	-	-		-	-	59	50
	19			20	703	469			22	94	-	-	-		-	-	407	345
O50	0.75	0	TYP	68	90	55			28	89	-	-	-		-	-	-	-
	19			20	621	379			28	89	-	-	-		-	-	-	-
O50	0.5	0	TYP	68	92	58			22	98	-	-	-		-	-	-	-
	12.7			20	634	400			22	98	-	-	-		-	-	-	-
Forgings
M10	2	0	TYP	68	79	38			30	78	-	-	-		-	-	-	-
	51			20	545	262			30	78	-	-	-		-	-	-	-
Bar
M30	0.75	0	TYP	68	75	35			32	77	-	-	-		-	-	-	-
	19			20	517	241			32	77	-	-	-		-	-	-	-