Product type: Strip
Material: H90/F11/F18
Width: <600mm
Thickness:0.05-4mm,0.5-1.37mm,1.7-3.6mm
| Standard size | Brass-steel-brass | Brass-steel-brass | Brass-steel-brass |
| Strip width | 139.5mm | 124/135/137/140mm | < 600 mm |
| Strip thickness | 1.7-3.6mm | 0.5-1.37mm | 0.05-4.0 mm |
| Coating thickness | 3.4%-4% | 3.4%-4% | 3%-15 % |
| Base material | F18 steel | F11 steel | SPHC steel |
| Cladding material | H90 copper | H90 copper | H90 copper |
| Delivery form | Coil / Strip | Coil / Strip | Coil / Strip |
|
Grade
|
Chemical composition of steel strip |
||||||||
|
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu |
Als |
|
|
% |
% |
% |
% |
% |
% |
% |
% |
% |
|
|
F11 |
≤0.11 |
≤0.06 |
0.30-0.55 |
≤0.02 |
≤0.01 |
≤0.3 |
≤0.15 |
≤0.2 |
0.02-0.1 |
|
F18 |
0.11-0.19 |
≤0.06 |
0.35-0.55 |
≤0.02 |
≤0.01 |
≤0.3 |
≤0.15 |
≤0.2 |
0.02-0.1 |
|
SPHC |
≤0.15 |
≤0.05 |
≤0.6 |
≤0.035 |
≤0.035 |
- |
- |
- |
≥0.010 |
|
Grade
|
Chemical composition of copper strip |
|||||||||
|
Cu+Ag (min) |
P |
Bi |
Sb |
As |
Fe |
Pb |
S |
Zn |
Total impurities |
|
|
% |
% |
% |
% |
% |
% |
% |
% |
% |
% |
|
|
H90 |
88-91 |
- |
- |
- |
- |
≤0.1 |
≤0.02 |
- |
allowance |
≤0.2 |
|
material |
tensile strength(Mpa) |
Elongation(%) |
Grain size |
Pearlite |
Non-metallic inclusionsA/B/C/D |
||
|
Annealed |
half hard |
Annealed |
half hard |
||||
|
H90/SPHC/H90 |
290~355 |
360~455 |
≥36% |
≥8% |
7-10 |
1-5 |
≤2.5 |
|
H90/F11/H90 |
265~365 |
- |
≥43% |
- |
7-10 |
1-5 |
≤2.5 |
|
H90/F18/H90 |
305~395 |
- |
≥37% |
- |
7-10 |
2-6 |
≤2.5 |
Copper-steel composite material with good elongation, high bonding strength, low resistivity, high tensile strength and low cost is provided. A copper-steel-copper composite material is disclosed. Its chemical composition proportion is 5-20% of copper and 80-95% of steel, and its structure is composed of copper and steel. The invention also discloses the preparation method of copper-steel composite material. The preparation steps are as follows: after surface treatment, copper and steel are rolled into high-precision steel strip and high-precision copper strip by cold rolling mill; after surface cleaning, surface residues are removed and degreased; high-precision copper-steel composite strip is rolled by cold rolling mill; and copper-steel composite strip is annealed at 650-850 C in vacuum furnace. In 1-4 hours, the structural molecules of the composite layer of two kinds of metal materials are melted, and then cooled to room temperature in vacuum furnace; the two kinds of strips are compounded to make the strips compounded into one and finish rolling; the composite materials are smoothed and polished, and the strips are packed after shearing according to the requirements of users.
