Silver-Bearing Tough Pitch Copper UNS 11400

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 11400 silver-bearing tough pitch copper has ductility, anneal resistance, and conductivity of 101% IACS. The following datasheet will discuss in detail about UNS 11400 copper.

Chemical Composition

The following table shows the chemical composition of the UNS 11400 copper.

Element Content (%)
Cu 99.9
O 0.04
Ag 0.0313

Physical Properties

The physical properties of the UNS 11400 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 UNS 11400 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 11400 copper are outlined in the following table.

ASTM B1 ASTM B187 ASTM B229 ASTM B355 ASTM B496
ASTM B116 ASTM B188 ASTM B246 ASTM B442 ASTM B5
ASTM B152 ASTM B189 ASTM B272 ASTM B47 ASTM B506
ASTM B172 ASTM B2 ASTM B286 ASTM B470 ASTM B623
ASTM B173 ASTM B224 ASTM B298 ASTM B48 ASTM B8
ASTM B174 ASTM B226 ASTM B3 ASTM B49 MIL B-20292
QQ B575 SAE J461 SAE J463

Fabrication and Heat Treatment

Machinability

The machinability rate of 11400 copper is 20%.

Welding

Welding techniques such as soldering, brazing, gas shielded arc welding, oxyacetylene welding and butt welding are preferred for 11400 copper. Other welding techniques such as coated metal arc welding, spot welding and seam welding are not recommended.

Forging

Forging of 11400 copper is performed 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

11400 copper has excellent hot working property.

Cold Working

11400 copper has excellent cold working property.

Annealing

11400 copper is annealed at temperatures ranging from 482 to 760°C (900 to 1400°F).

Applications

The following are the major applications of the UNS 11400 copper:

  • Electrical components
  • Commutator segments

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