Cupronickel – Steel – Cupronickel
TU 1995-001-55680513-2002 Multilayer strips CuNi19-St-CuNi19. Technical requirements
Description
Multilayer strip CuNi19-St-CuNi19 is made of low-carbon steel, grade DC04 clad on both sides with copper-nickel alloy – cupronickel CuNi19.
Composition

- Base – low-carbon quality steel, grade DC04 with chemical composition acc. to GOST 9045.
- Coating – cupronickel, grade CuNi19 with chemical composition acc. to GOST 492.
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-tempered – S-T
- – hard – H
By type of edge:
- sheared edge – О
- mill edge – N
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 |
0,95 – 1,50 |
(±0,02) |
60 – 220 |
(±0,3) |
off-gage |
400 / 500 |
150 – 900 |
Band |
0,95 – 1,50 |
(±0,02) |
50 – 220 |
(±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, % |
Super-Rockwell hardness, (with load 15 kgf), HRT15 |
Soft-tempered (S-T) |
260 ÷ 390 |
≥28 |
72 ÷ 78 |
Hard (H) |
410 ÷ 570 |
≥2 |
83 ÷ 90 |
Application
For manufacturing of coin blanks and other products.