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

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.