Type 624

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SPECIFICATION DATA SHEET: Aluminum Bronze C-624

BAR	TUBE	PIPE
PSQ SHAFT	WELDING ROD	CASTINGS
FORGINGS	PLATE	FLANGES
TG&P SHAFTS	SHEET	FITTINGS

ALUMINUM BRONZE C-624

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

	Cu⁽¹⁾	Al	Fe	Mn	Si	Sn
Min./Max.	Rem.	10.0-11.5	2.0-4.5	.30	.25	.20
Nominal	86.0	11.0	3.0	-	-	-

(1) Cu value includes Ag.
Note: Cu + Sum of Named Elements, 99.5% min.

Applicable Specifications

Product	Specification
Forgings	SAE J461, J463
Rod	ASTM B150
Rod, Welding	AWS A5.7

Common Fabrication Processes

Hot bending, Hot forging

Fabrication Properties

Joining Technique	Suitability
Soldering	Not Recommended
Brazing	Fair
Oxyacetylene Welding	Not Recommended
Gas Shielded Arc Welding	Good
Coated Metal Arc Welding	Good
Spot Weld	Good
Seam Weld	Good
Butt Weld	Good
Capacity for Being Cold Worked	Poor
Capacity for Being Hot Formed	Excellent
Forgeability Rating	80
Machinability Rating	50

Mechanical Properties

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

*Fatigue Strength: 100 x 10 ⁶cycles, unless indicated as [N]X 10⁶.

Temper	Section Size	Cold Work	Typ/ Min	Temp	Tensile Strength	Yield Strength (0.5% ext. under load)	Yield Strength (0.2% offset)	Yield Strength (0.05% offset)	El	Rockwell Hardness				Vickens Hard.	Brinell Hard.		Shear Strength	Fatigue Strength*	Izod Impact Strength
	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	3	0	TYP	68	90	40	-	-	18	87	-	-	-	-	-	-	-	-	0.0
	76			20	621	276	-	-	18	87	-	-	-	-	-	-	-	-	0.0
O50	1	0	TYP	68	100	50	-	-	14	92	-	-	-	-	-	-	-	-	0.0
	25.4			20	689	345	-	-	14	92	-	-	-	-	-	-	-	-	0.0
O50	2	0	TYP	68	93	45	-	-	14	91	-	-	-	-	-	-	-	-	0.0
	51			20	641	310	-	-	14	91	-	-	-	-	-	-	-	-	0.0
Rod
H02	1	10	TYP	68	105	52	-	-	14	92	-	-	-	-	-	-	65	36	0.0
	25.4			20	724	359	-	-	14	92	-	-	-	-	-	-	448	248	0.0
H02	2	10	TYP	68	95	48	-	-	14	92	-	-	-	-	-	-	62	35	0.0
	51			20	655	331	-	-	14	92	-	-	-	-	-	-	427	241	0.0
H02	3	10	TYP	68	95	47	-	-	14	91	-	-	-	-	-	-	60	34	0.0
	76			20	655	324	-	-	14	91	-	-	-	-	-	-	414	234	0.0
M30	4	0	TYP	68	90	40	-	-	18	87	-	-	-	-	-	-	58	32	0.0
	102			20	621	276	-	-	18	87	-	-	-	-	-	-	400	221	0.0

Physical Properties

	US Customary	Metric
Melting Point - Liquidus	1900 F	1038 C
Melting Point - Solidus	1880 F	1027 C
Density	0.269 lb/in³ at 68 F	7.45 gm/cm³ @ 20 C
Specific Gravity	7.45	7.45
Electrical Resistivity	86.4 ohms-cmil/ft @ 68 F	14.36 microhm-cm @ 20 C
Electrical Conductivity	12 %IACS @ 68 F	0.07 MegaSiemens/cm @ 20 C
Thermal Conductivity	34.0 Btu · ft/(hr · ft2 · ^oF) at 68F	58.8 W/m · ^oK at 20 C
Coefficient of Thermal Expansion	9.0 ·10^-6 per ^oF (68-572 F)	16.2 ·10^-6 per ^oC (20-300 C)
Specific Heat Capacity	0.09 Btu/lb/^oF at 68 F	376.78 J/kg · ^oK at 293 K
Modulas of Elasticity in Tension	17000 ksi	117000 MPa
Modulus of Rigidity	6400 ksi	44130 MPa

Tempers Most Commonly Used

Other
ROD	H02, M30
SHAPES	M30

Typical Uses

Fasteners
Nuts
Industrial
Hydraulic Bushings, Support Bushings, Valve Balls, Welding Wire, Drift Pins, Tie Rods, Wear Plates, Bushings, Gears, Cams