Aluminum Bronze | C64200 Silicon Aluminum Bronze

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National Bronze & Metals, Inc.

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C64200 Silicon Aluminum Bronze
ASTM B150, ASTM B249, QQ-C-465, AMS 4631, AMS 4634

C64200 is an engineering alloy at least as resistant to corrosion as copper itself, but much stronger. C64200 is manufactured mostly in the form of round, hexagonal, and octagonal rods for hot forming and free machining. C64200 is considered to be of the best valve stem alloys. Other applications include gears, marine hardware, nuts, pole line hardware, and valve bodies and components.

TYPICAL USES FOR C64200 SILICON ALUMINUM BRONZE

AUTOMOTIVE: Valve Guides, Automobile Engine
ELECTRICAL: Pole Line Hardware
FASTENERS: Bolts, Nuts
INDUSTRIAL: Valve Components, Valve Bodies, Gears, Valve Stems, Cams
MARINE: Hardware

Click Here to Download C64200 SPEC SHEET

<<< SEE SIZES & SPECS BELOW >>

CHEMICAL COMPOSITION

	Al	As	Cu	Fe	Pb	Mn	Ni	Si	Sn	Zn
Min/Max	6.3 - 7.6	0.15	Rem	0.3	0.05	0.1	0.25	1.5 - 2.2	0.2	0.5
Nominals	7.0000	-	91.2000	-	-	-	-	1.8000	-	-

TEMPER

Product Type	Temper Type
Bar	AMS 4631, ASME SB150, ASTM B150
Bar, Forging	ASTM B124
Bolts	ASTM F468
Forgings, Die	AMS 4631, ASME SB283, ASTM B283
Nuts	ASTM F467
Rod	AMS 4631, ASME SB150, ASTM B150, SAE J463, J461
Rod, Forging	ASTM B124
Screws	ASTM F468
Shapes	ASTM B150
Shapes, Forging	ASTM B124
Studs	ASTM F468

MECHANICAL PROPERTIES

Temper	Sect. Size	Cold Work	Type Min	Temp	Tensile Strength	YS 0.05% UL	YS 0.02% Offset	YS 0.005% Offset	Elong.	RH B	RH C	RH F	RH 30T	VH 500	BH 500	BH 3000	Shear Strgth	Fatigue Strgth	Izod Impact Strgth
-	in.	%	-	F	ksi	ksi	ksi	ksi	%	B	C	F	30T	500	500	3000	ksi	ksi	ft-lb
-	mm.	-	-	C	MPa	MPa	MPa	MPa	-	-	-	-	-	-	-	-	MPa	MPa	J
Bar
M30	0.75			68	75	35	-	-	-	-	-	-	-	-	-	-	-	-
M30	19	0	TYP	20	517	241	-	-	32	77	-	-	-	-	-	-	-	-	0
Forgings
M10	2.01			68	79	38	-	-	-	-	-	-	-	-	-	-	-	-
M10	51	0	TYP	20	545	262	-	-	30	78	-	-	-	-	-	-	-	-	0
Rod
M30	0.75			68	75	35	-	-	-	-	-	-	-	-	-	-	-	-
M30	19	0	TYP	20	517	241	-	-	32	77	-	-	-	-	-	-	-	-	0
H04	1.5			68	93	60	-	-	-	-	-	-	-	-	-	-	-	-
H04	38	10	TYP	20	641	414	-	-	26	90	-	-	-	-	-	-	-	-	0
H04	0.75			68	102	68	-	-	-	-	-	-	-	-	-	-	59	50
H04	19	15	TYP	20	703	469	-	-	22	94	-	-	-	-	-	-	407	345	0
O50	0.75			68	90	55	-	-	-	-	-	-	-	-	-	-	-	-
O50	19	0	TYP	20	621	379	-	-	28	89	-	-	-	-	-	-	-	-	0
O50	0.5			68	92	58	-	-	-	-	-	-	-	-	-	-	-	-
O50	12.7	0	TYP	20	634	400	-	-	22	98	-	-	-	-	-	-	-	-	0

PHYSICAL PROPERTIES

Product Property	US Customary	Metric
Coefficient of Thermal Expansion	10.0 ·10-6 per oF (68-572 F)	18.0 ·10-6 per oC (20-300 C)
Density	0.278 lb/in3 at 68 F	7.7 gm/cm3 @ 20 C
Electrical Conductivity	8 %IACS @ 68 F	0.047 MegaSiemens/cm @ 20 C
Electrical Resistivity	113.0 ohms-cmil/ft @ 68 F	18.79 microhm-cm @ 20 C
Melting Point - Liquidus	1840 F	1004 C
Melting Point - Solidus	1800 F	982 C
Modulas of Elasticity in Tension	16000 ksi	110000 MPa
Modulus of Rigidity	6000 ksi	41370 MPa
Specific Gravity	7.69	7.69
Specific Heat Capacity	0.09 Btu/lb/·oF at 68F	377.1 J/kg ·oK at 293 K
Thermal Conductivity	26.0 Btu · ft/(hr · ft2·oF)at 68F	45.0 W/m · oK at 20 C

FABRICATION

Joining Technique	Suitability
Brazing	Fair
Butt Weld	Fair
Capacity for Being Cold Worked	Poor
Capacity for Being Hot Formed	Excellent
Coated Metal Arc Welding	Fair
Gas Shielded Arc Welding	Fair
Machinability Rating	80
Oxyacetylene Welding	Not Recommended
Seam Weld	Fair
Soldering	Not Recommended
Spot Weld	Fair

SPECIFICATIONS

End Product	Specification
Bar	AMS 4631, ASME SB150, ASTM B150
Bar, Forging	ASTM B124
Bolts	ASTM F468
Forgings, Die	AMS 4631, ASME SB283, ASTM B283
Nuts	ASTM F467
Rod	AMS 4631, ASME SB150, ASTM B150, SAE J463, J461
Rod, Forging	ASTM B124
Screws	ASTM F468
Shapes	ASTM B150
Shapes, Forging	ASTM B124
Studs	ASTM F468

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