Silver-Bearing Tough Pitch Copper UNS 11600

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

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