Copper Alloy No. C26000

Cartridge Brass, 70%

Chemical Composition % by weight

Copper	Lead	Iron	Zinc
70 Nominal	.07 Maximum	.05 Maximum	Remainder (nominal 30%)

Applications

Architectural: grillwork 

Automotive: radiator, heater cores and tanks

Electrical: flashlight shells, lamp fixtures, reflectors, screw shells, socket shells

Hardware: bead chain, chain, eyelets, fasteners, grommets, finish hardware articles (kick plates, locks, push plates etc.), stencils

Industrial: pump, power cylinders and liners

Munitions: ammunition components

Plumbing: plumbing accessories, plumbing brass goods

Wire: fasteners, pins, rivets, screws, springs 

Hardness*	Rockwell B Scales	82
Tensile Strength**	KSI	78
Yield Strength**	KSI	64
Elongation**	% in 2 inch	8

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity	BTU/ (sq ft-ft-hr-F)	70
Specific Heat	BTU/lb/ºF @ 68F	.09
Thermal Expansion	Per °F from 68 F to 572 F	.0000111
Density	lb/cu in @ 68 F	.308
Electrical Conductivity* (Annealed)	% IACS @ 68 F	28
Modulus of Elasticity	KSI	16,000

*Volume basis

Capacity for being cold worked	Excellent
Capacity for being hot formed	Fair
Hot working temperature	1350-1550 F or 725-850 C
Annealing temperature	800-1400 F or 425-750 C
Machinability rating (Free Cutting Brass=100)	-
Suitability for being joined by:	Soldering/Excellent
	Brazing/Excellent
	Oxyacetylene Welding/Good
	Gas Shielded Arc Welding/Fair
	Coated Metal Arc Welding/Not Recommended
Resistance Welding	Spot/Good
	Seam/Not Recommended
	Butt/Good

The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable A.S.T.M. specification references.