C67300 Manganese Bronze SAE J463/J461

C673 Manganese Bronze per SAE J463 is a manganese silicon bronze alloy. This alloy has a high machinability rating of 70. Also referred to as a manganese brass due to the use of zinc as the alloying element. C673 has excellent wear and tear characteristics. Combined with the ease of machining and ability to be hot forged, C67300 is often used as a alternative for phosphor bronze in a number of demanding applications. C67300 is a corrosion resistant alloy that can be soldered.

Shapes

Solid Round Bar Stock

Applications

• Valve Guides
• Beaings
• Bushings
• Shafts
• Cam follower pins
• Piston Shoes
• Axial

Specifications

CHEMICAL COMPOSITION:

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

	Cu(1)	Al	Fe	Pb	Mn	Ni(2)	Si	Sn	Zn
Min./Max.	58.0-63.0	.25	.50	.40-3.0	2.0-3.5	.25	.50-1.5	.30	Rem.
Nominal	60.5	-	-	1.7	2.7	-	1.0	-	34.1

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

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)	Yield Strength (0.2% offset)	Yield Strength (0.05% offset)	El	Rockwell Hardness				Vickens Hard.	Brinell Hard.		Shear Strength
	in.	%		F	ksi	ksi	ksi	ksi	%	B	C	F	30T	500	500	3000	ksi
	mm.			C	MPa	MPa	MPa	MPa									MPa
Bar
H50	<1.00	0	min	68	65	40	-	-	11	80	-	-	-	-	-	-	-
	<25.4			20	448	276	-	-	11	80	-	-	-	-	-	-	-

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

APPLICABLE SPECIFICATIONS:

Product	Specification
Bar	SAE J461, J463
Forgings	SAE J461, J463
Rod	SAE J463, J461
Shapes	SAE J463, J461