+7 |4842| 72-85-55 / info@bimetall.ru

Brass – Steel – Brass

Brass – Steel – Brass

TU 1881-004-75479902-2005  Multilayer strips CuZn37 St CuZn37.  Technical Requirements

Description

Multilayer bimetal strip CuZn37-St-CuZn37 is made of low-carbon steel strip, clad on both sides with CuZn37.

Composition

brass-steel-brass-en

  • Base – low-carbon quality steel, grade DC04 with chemical composition acc. to GOST 9045.
  • Coating – brass CuZn37 with chemical composition acc. to GOST ГОСТ 15527.

The thickness of cladding layers h1 and h2 is the same for both sides and varies from 4 to 6% of the finished strip thickness. Upon customer’s request, the thickness of the cladding layer can be up to 10% on each side.

Classification and range

By state of material:
  • soft – M
  • soft-tempered – Д
  • half-hard – П
  • hard – T
  • extra-hard – ОТ
By type of edge:
  • sheared edge – O
  • mill edge – Н

Technical characteristics

Type

Thickness H, mm

Thickness tolerance, mm

Width B, mm

Width tolerance, mm

Length, mm

Internal coil diameter

ØID, mm

Coil weight, kg

Strip

0,10 – 0,80

from (±0,005)

to (±0,03)

6 – 60

(±0,2)

off-gage

80 / 100 / 200 /

300 / 400

10 – 100

60 – 220

from (±0,2)

to (±0,3)

50 – 500

0,81 – 1,50

from (±0,03)

to (±0,035)

20 – 60

(±0,2)

off-gage

300 / 400 / 500

10 – 100

60 – 220

from (±0,2)

to (±0,3)

50 – 500

Band

0,50 – 1,50

from (±0,02)

to (±0,035)

50 – 220

from (±0,2)

to (±0,3)

1000 – 2000

For strips with mill edge width tolerance is (±1,0) mm.
Production of other sizes according to the agreed tolerance is possible.

Mechanical properties

Strip state

Ultimate tensile strength

 σB, МPа

Elongation

δ, %

Soft (М)

290 ÷ 410

≥32

Soft-tempered (Д)

320 ÷ 440

≥26

Half-hard (П)

340 ÷ 470

≥20

Hard (Т)

410 ÷ 570

≥8

Extra-hard – (ОТ)

510 ÷ 640

≥2

 Application

For manufacturing of electrical engineering and automotive industry products, cable armouring.