260 Brass Product Guide

Applications | Specifications | Mechanical and Chemical Data | Tolerances

Overview

The most ductile of the yellow brasses, 260 brass also has a good strength, finishing capabilities and corrosion resistance. It is also easily machined and cold formed. 260 brass should not be used in projects where it will come into contact with acetic acid, hydrochloric acid, nitric acid, or ammonia. Due to the high zinc contact, it shouldn't be soldered. Typically used in architecture, electrical parts, fasteners, and ammunition casings.

Common Trade Names

UNS C26000, CDA 260, C260, CZ106, ISO CuZn30, 70/30 brass, Cartridge Brass 70%

Other resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

Products

Applications

Ammunition Casings
Fasteners
Electrical Components
Architecture

Specifications

ASTM
B36

	Soft Annealed	Annealed	-H02
Physical Properties 260
Density	0.308 lb/in3	0.308 lb/in3	0.308 lb/in3
Ultimate Tensile Strength	49.3 ksi	50.1 ksi	61.6 ksi
Yield Tensile Strength	16.7 ksi	17.8 ksi	52.2 ksi
Fatigue Strength	N/A	N/A	18 ksi
Shear Strength	34.1 ksi	34.1 ksi	39.9 ksi
Shear Modulus	N/A	5,800 ksi	5,800 ksi
Hardness Rockwell \| Brinell	F68 \| 61-63	F68-72 \| 61-65	B70 \| 110
Elongation at Break Percentage	57%	55-57%	23%
Modulus of Elasticity	16,000 ksi	16,000 ksi	16,000 ksi
Poisson's Ratio	0.38	0.38	0.38
Machinability Percentage	N/A	30%	30%
Melting Point	1,680-1,750 °F	1,680-1,750 °F	1,680-1,750 °F
Specific Heat	8.96 x 10^-2 BTU/lb-°F	8.96 x 10^-2 BTU/lb-°F	8.96 x 10^-2 BTU/lb-°F
Thermal Conductivity	833 BTU-in/hr-ft^2-°F	833 BTU-in/hr-ft^2-°F	833 BTU-in/hr-ft^2-°F
Electrical Conductivity	28% IACS	28% IACS	28% IACS

Chemistry Information
Element	Percentage
Cu	70
Zn	30