Specifications - Copper & Copper Alloys

Please open the specification sections below for details of grade designations, mechanical and service properties and applications.

Grade Designations And Chemical Composition For Copper And Copper Alloys
Material Designation
EN 12166 : 1998
Nearest Fit Cu Be Co Fe
max
Mn
max
Ni P Pb
max
Sn Zn Others Impurities
max
Symbol Number UNS BS 2873
COPPER
Cu-ETP CW 004A C 10100 C 101 99.90 min             0.005     O 0.040 max 0.03
Cu-OF (Copper Oxygen Free) CW 008A C 10300 C 103 99.95 min             0.005     O min 0.03
BRASS
Cu Zn 30 CW 505 L C 26000 CZ 106 69 – 71     0.05   0.30 max   0.005 0.10 max rem Al 0.02 max 0.1
Cu Zn 37 CW 508 L C 27200 CZ 108 62 – 64     0.1   0.30 max   0.1 0.10 max rem Al 0.05 max 0.1
PHOSPHOR BRONZE
Cu Sn 5 CW 451 K C 51000 PB 102 rem     0.1   0.20 max 0.01 – 0.40 0.02 4.5 – 5.5 0.2 max   0.2
Cu Sn 6 CW 452 K C 51900 PB 103 rem     0.1   0.20 max 0.01 – 0.40 0.02 5.5 – 7.0 0.2 max   0.2
NICKEL SILVER
Cu Ni 10 Zn 27 CW 401 J C 74500 NS 103 61 – 64     0.3 0.5 9.0 – 11.0   0.005   rem   0.2
Cu Ni 12 Zn 24 CW 403 J C 75700 NS 104 63 – 66     0.3 0.5 11.0 – 13.0   0.03 0.03 max rem   0.2
Cu Ni 18 Zn 20 CW 409 J C 75200 NS 106 60 – 63     0.3 0.5 17.0 – 19.0   0.03 0.03 max rem   0.2
BERYLLIUM COPPER
Cu Be 2 CW 101 C C 17200 CB 101 rem 1.8 – 2.1 0.30 max 0.2   0.30 max           0.5

 

Mechanical Properties For Copper And Copper Alloys

Material Designation EN 12166 : 1998

Nearest Fit

Material Condition

U.T.S Rm N/mm²

Elongation A50 % min;

Symbol

Number

UNS

BS 2873

COPPER

Cu-ETP

CW 004A

C 10100

C 101

Annealed

220 – 260

33

Cu-OF

CW 008A

C 10300

C 103

Annealed

220 – 260

33

BRASS

Cu Zn 30

CW 505 L

C 26000

CZ 106

Annealed

310 – 410

40

1/2 Hard

540 – 640

Hard

620 – 720

Cu Zn 37

CW 508 L

C 27200

CZ 108

Annealed

300 – 380

35

1/2 Hard

560 – 700

Hard

700 min

PHOSPHOR BRONZE

Cu Sn 5

CW 451 K

C 51000

PB 102

Annealed

330 – 420

45

1/2 Hard

500 – 600

Hard

690 – 850

Spring Hard

850 min

Cu Sn 6

CW 452 K

C 51900

PB 103

Annealed

360 – 440

60

1/2 Hard

530 – 630

Hard

740 – 900

Spring Hard

900 min

NICKEL SILVER

Cu Ni 10 Zn 27

Cu Ni 12 Zn 24

CW 401 J

CW 403 J

C 74500

C 75700

NS 103

NS 104

Annealed

370 – 480

30

1/2 Hard

560 – 660

Hard

660 – 780

Cu Ni 18 Zn 20

CW 409 J

C 75200

NS 106

Annealed

420 – 540

30

1/2 Hard

600 – 700

Hard

700 – 800

BERYLLIUM COPPER

Cu Be 2

CW 101 C

C 17200

CB 101

Annealed

400 – 600

30

 

Service Properties And Applications For Copper And Copper Alloys

Material Designation
EN 12166 : 1998

Nearest Fit

Service Properties

Applications

Symbol

Number

UNS

BS 2873

COPPER

Cu-ETP

CW 004A

C 10100

C 101

Excellent formability and conductivity but can be embrittled if heated in reducing atmospheres because of the presence of Oxygen.

Electrical components. Knitting, braiding, weaving, conductors, transformer windings, wire shapes.

Cu-OF

CW 008A

C 10300

C 103

Reduced oxygen to prevent embrittlement. Similar formability to Cu-ETP.

Electrical and electronic components.

BRASS

Cu Zn 30

CW 505 L

C 26000

CZ 106

70/30 Brass. Maximum ductility of the CuZn alloys. Good deep drawing properties.

Model making, ferrules, connectors, switches.

Cu Zn 37

CW 508 L

C 27200

CZ 108

General purpose alloy for simple forming operations.

Contacts, springs, knitting and weaving for RFI applications.

PHOSPHOR BRONZE

Cu Sn 5

CW 451 K

C 51000

PB 102

Good formability combined with resistance to corrosion and fatigue.

Springs, contacts, wire shapes, lock levers, switches.

Cu Sn 6

CW 452 K

C 51900

PB 103

Extra tin giving improved wear properties, corrosion resistance and tensile strength. Generally used for more severe service conditions than CuSn5.

Springs, contacts, switches, brushes.

NICKEL SILVER

Cu Ni 10 Zn 27

Cu Ni 12 Zn 24

CW 401 J

CW 403 J

C 74500

C 75700

NS 103

NS 104

Alloys notable for their good corrosion resistance and attractive colour. Good formability, readily soldered or brazed.

Springs, contacts, model making, jewellery.

Cu Ni 18 Zn 20

CW 409 J

C 75200

NS 106

The range of alloys becomes progressively whiter with increased nickel content. Properties as for NS103/104 above.

Brush anchor wire, pins, jewellery.

BERYLLIUM COPPER

Cu Be 2

CW 101 C

C 17200

CB 101

Precipitation hardening alloy with excellent strength, elasticity and fatigue resistance. Usually formed and then heat treated but can also be formed in the aged condition.

Springs, contacts, switches, connector pins.