Nov 15 2012
	Topics Covered
	Introduction
	Chemical Composition
	Physical Properties
	Mechanical Properties
	Other Designations
	Fabrication and Heat Treatment
	     Machinability
	     Welding
	     Forging
	     Hot Working
	     Cold Working
	     Annealing
	Applications
	Introduction
	UNS 11600 silver-bearing tough pitch copper has a conductivity of 101% IACS, anneal resistance and ductility. The following datasheet will cover the properties, designations, fabrication, heat treatment and applications of UNS 11600 copper.
	Chemical Composition
	The following table shows the chemical composition of UNS 11600 copper.
	
		
			| Element | Content (%) | 
		
			| Cu | 99.9 | 
		
			| O | 0.04 | 
		
			| Ag | 0.078 | 
	
	Physical Properties
	The physical properties of the UNS 11600 copper are given in the following table.
	
		
			| Properties | Metric | Imperial | 
		
			| Density | 8.89 - 8.94 g/cm³ | 0.321 - 0.323 lb/in3 | 
	
	Mechanical Properties
	The mechanical properties of the UNS 11600 copper are tabulated below.
	
		
			| Properties | Metric | Imperial | 
		
			| Tensile strength, ultimate | 221 - 455 MPa | 32100 - 66000 psi | 
		
			| Tensile strength, yield (depending on temper) | 69.0 - 365 MPa | 10000 - 52900 psi | 
		
			| Elongation at break (in 101.6 mm (4 in.)) | 55.00% | 55.00% | 
		
			| Modulus of elasticity | 115 GPa | 16700 ksi | 
		
			| Poissons ratio (calculated) | 0.300 | 0.300 | 
		
			| Machinability (UNS C36000 (free-cutting brass) = 100%) | 20% | 20% | 
		
			| Shear modulus | 44.0 GPa | 6380 ksi | 
	
	Other Designations
	The designations that are equivalent to UNS 11600 copper are outlined in the following table.
	
		
			| ASTM B1 | ASTM B188 | ASTM B272 | ASTM B47 | ASTM B623 | 
		
			| ASTM B116 | ASTM B189 | ASTM B286 | ASTM B470 | ASTM B8 | 
		
			| ASTM B152 | ASTM B2 | ASTM B298 | ASTM B48 | MIL B-19231 | 
		
			| ASTM B172 | ASTM B224 | ASTM B3 | ASTM B49 | MIL B-20292 | 
		
			| ASTM B173 | ASTM B226 | ASTM B33 | ASTM B496 | QQ B575 | 
		
			| ASTM B174 | ASTM B229 | ASTM B355 | ASTM B5 | SAE J461 | 
		
			| ASTM B187 | ASTM B246 | ASTM B442 | ASTM B506 | SAE J463 | 
	
	Fabrication and Heat Treatment
	Machinability
	The machinability rate of UNS11600 copper is 20%.
	Welding
	Welding techniques such as soldering, brazing, gas shielded arc welding, and butt welding are preferred for UNS11600 copper. Other welding techniques such as oxyacetylene welding, coated metal arc welding, spot welding and seam welding are not recommended.
	Forging
	UNS11600 copper is forged at hot working temperatures ranging from 760 to 871°C (1400 to 1600°F). The hot forgeability rate of this metal is 65%.
	Hot Working
	UNS11600 copper has excellent hot working property.
	Cold Working
	UNS11600 copper has excellent cold working property.
	Annealing
	Annealing of UNS11600 copper is performed at temperatures ranging from 482 to 760°C (900 to 1400°F).
	Applications
	The following are the major applications of the UNS11600 copper:
	- 
		Commutator segments
- 
		Electrical components