Wire
Stranded wire, stranded
wire rope, plain wire rope
2
OUR ASPIRATION
Hot-wired
to the future.
T
omorrow’s world will be quite different from today’s – and in all likelihood it will be better. Real-time communication, eMobility, fully autonomous
driving and renewable energies will change our habits,
revolutionise them even. These things also entail a significant opportunity to live together more sustainably
and more comfortably than before.
None of those industries can get by without copper,
or more precisely without wire, stranded wire and
wire rope. There can be no driver assistance systems
without wires to carry signals, no energy turnaround
without tinned solar stranded wires, no smartphones
or tablets without the conductivity of copper contacts
and connections, and no expanding power networks
without flexible, optimised-cross-section conductors.
You could say that the 21st century will be copper-coloured – ‘El siglo de cobre’. Copper is fully recyclable, extremely durable, flexible, smart and innovative – provided, that is, you know how to make a very
good material into an even better semi-finished product: a product with an outstanding surface and high
conductivity, and a product made precisely for a specific use.
Here at MKM we have been casting and drawing single
and multiple wires, stranded wire and stranded wire
rope, and all kinds of plain wire rope since 1909. By ‘all
kinds’ we mean different materials and finishes, every
form of each product and numerous different diameters. Our own cast-rolled wire is used as a primary product for our drawn wires.
3
STRANDED WIRE, STRANDED WIRE ROPE AND PURE WIRE ROPE
We pull no punches.
We pull wires.
M
KM’s production process is fully integrated. That way
we keep our production cycle closed. After all, bad
cast-rolled wire can never become a good semi-finished
product such as ultra-fine stranded wire rope. In principle
we can produce endless wire from a thickness of 8.0 mm
down to 0.05 mm, which is thinner than the diameter of
a hair. In fact when it comes to precision, we like splitting
hairs.
Our expertise – your gain
Our upstream Contirod® technology guarantees that every
application receives exactly the right material. It’s set
standards in the market. MKM sells semi-finished products at every level of finish. That allows our customers to
conduct their own business flexibly and in their own way,
thereby gaining a competitive edge.
4
Stranded wire, stranded wire rope and plain wire rope
are used in these areas:
■■ lightning protection/earthing
■■ power engineering
■■ heavy current engineering
■■ solar power
■■ wind power
■■ offshore/submarine cables
■■ automotives, rail, aviation, space travel
■■ IT/telecommunications (smartphones, tablets)
By opting for MKM wire products you are choosing:
maximum diversity of products and dimensions
■■ integrated production
■■ flexible machinery that is constantly being upgraded
■■ more than a century of experience across the entire
spectrum of copper production and processing
■■ a highly qualified workforce
■■ comprehensive advice and support for:
−− product development
−− selecting surface qualities
−− using new material qualities and alloys
−− optimising the use of materials (diameters and
cross-sections)
−− developing new applications
−− improving business and technological processes
■■ product- and order-specific packaging
■■
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STRANDED WIRE, STRANDED WIRE ROPE AND PURE WIRE ROPE
Word gets around
about expertise.
Delivery
All of our products come in specially made, standard-­
compliant, secure packaging. Our packaging guarantees
retention of shape, ensuring that a product’s properties
are preserved to the utmost after leaving the factory. Seafreight packaging is something else we offer as standard.
We can assess individual requirements provided they can
be presented technically.
We supply in all standard sizes and, on request, in other
specifications and materials.
Some examples of packaging:
Stranded wire:
Steel coil S1000
in frame
Steel coil DIN 630 in twin frame
Plastic coil P250 on pallet
Plain wire rope and stranded wire rope:
Wooden reel H1600 boarded for
sea transport
6
Steel reel S1400
on reel sled
Steel coil S1000
in frame
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STRANDED WIRE, STRANDED WIRE ROPE AND PURE WIRE ROPE
Facts and figures
Standard and set-ups in DIN EN 60228 / VDE 0295 categories 2, 5 and 6.
8
Cross-section
in mm2
Category 2
Category 5
Category 6
0,14
–
–
18 x 0,10
0,25
–
14 x 0,16
32 x 0,10
0,34
–
19 x 0,16
42 x 0,10
0,38
–
12 x 0,21
21 x 0,16
0,5
7 x 0,30
16 x 0,21
28 x 0,16
0,75
7 x 0,37
24 x 0,21
42 x 0,16
1
7 x 0,43
32 x 0,21
56 x 0,16
1,5
7 x 0,52
32 x 0,26
84 x 0,16
2,5
7 x 0,67
50 x 0,26
140 x 0,16
4
7 x 0,85
56 x 0,31
224 x 0,16
6
7 x 1,05
84 x 0,31
192 x 0,21
10
7 x 1,35
80 x 0,41
320 x 0,21
16
7 x 1,70
128 x 0,41
512 x 0,21
25
7 x 2,13
200 x 0,41
800 x 0,21
35
7 x 2,52
280 x 0,41
1120 x 0,21
50
19 x 1,83
400 x 0,41
705 x 0,31
70
19 x 2,17
356 x 0,51
990 x 0,31
95
19 x 2,52
485 x 0,51
1340 x 0,31
120
37 x 2,03
614 x 0,51
1690 x 0,31
150
37 x 2,27
765 x 0,51
2123 x 0,31
185
37 x 2,52
944 x 0,51
1470 x 0,41
240
61 x 2,24
1225 x 0,51
1905 x 0,41
300
61 x 2,50
1530 x 0,51
2385 x 0,41
400
61 x 2,89
2035 x 0,51
–
500
61 x 3,23
–
–
Wires, diameters and materials as defined in EN 13602
Diameter
in mm
Material
Cu-ETP
Cu-ETP1
Cu-OF
Cu-OF1
Cu-OFE
4–1
1 – 0,3
0,3 – 0,05
Stranded wire
Reel flange
in mm
Cross-section in mm2
25 – 16
16 – 10
10 – 6
6 – 2,5
2,5 – 0,5
0,5 – 0,05
1000
800
630
560
450
400
315
250
200
160
Plain wire rope and stranded wire rope
Reel flange
in mm
Cross-section in mm2
1000 – 630
630 – 400
400 – 240
240 – 120
120 – 25
2000
1400
1250
1000
800
Standard product range
Other packaging and configurations on request. Further specifications and materials on request.
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GLOSSARY
Terms of turns.
Lay direction
The direction in which stranded wire and wire rope is twisted is indicated by the letters S and Z. Regardless of which
side you look at it from, the direction is always the same:
S = left twist, Z = right twist.
SZ
Lay length
The lay length is the length along the axis of a cable which
an element of the wire needs to twist one whole time
around that axis. It is defined either in mm or as a multiple
of the diameter of the stranded wire.
Concentric stranded wire
The strands of concentrically structured stranded wire
have a precisely defined position around the core of the
wire. That ensures an absolutely regular structure.
concentric stranded
wire 7-strand
concentric stranded
wire 19-strand
concentric stranded
wire 37-strand
For concentric stranded wire with more than seven strands
we different between four different types in terms of lay
length:
Unilay:
True concentric:
Unilay concentric:
same lay direction
same lay length
Equilay concentric:
changing lay direction
same lay length
Unidirectional concentric:
same lay direction
different lay length
Conventional concentric:
changing lay direction
different lay length
Stranded wire
We supply bunched stranded wires and concentric stranded wire: soft annealed bare or tinned using pure tin in lay
direction S or Z.
Bunched stranded wires
Numerous strands or bundles of wires are bunched together. The strands within the wire do not have any particular
order; their position in relation to one another changes
constantly along the length of the wire.
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Wire rope and stranded wire rope
Wire rope:
Wire rope is either flexible or rigid. It is available bare or
tinned (using pure tin), wound in lay direction S or Z, sealed
or unsealed, soft or hard.
Structures:
7-strand = 1 + 6
19-strand = 1 + 6 + 12
37-strand = 1 + 6 + 12 + 18
61-strand = 1 + 6 + 12 + 18 + 24
Lay directions can also oppose,
e.g. Equal lay rope in Z throughout.
Equal lay:
Stranded wire rope:
This is wire rope with a symmetrical structure consisting of
and wound using pre-stranded wires. The following variations of this type of stranding are available.
Reverse lay:
Equal lay rope:
The lay direction of the pre-stranded wire and the rope
itself are the same. The diameter of wire ropes made this
way is smaller than reverse lay and ordinary lay ropes.
Reverse lay rope:
The lay direction of the pre-stranded wires is the same as
their position and it and changes from layer to layer.
Cross lay rope:
The lay direction of the pre-stranded wires is counter to
their position and changes from layer to layer.
Laying type
Core
1
1st layer
6
2nd layer 3rd layer
12
18
Equal lay:
Strand:
Wire rope:
S
–
S
S
S
S
S
S
S
S
Reverse lay:
Strand:
Wire rope:
Z
–
S
S
Z
Z
S
S
Z
Z
Cross lay:
Strand:
Wire rope:
Z
–
S
Z
Z
S
S
Z
Z
S
Cross lay:
4th layer
24
Total tin coating on finished wires:
■■ 0.05 mm to 0.14 mm min. 0.4 μm
■■ Above 0.14 mm to 0.29 mm min. 0.6 μm
■■ Above 0.29 mm min. 0.8 μm
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Product areas
STRIP
MKM supplies preliminary strip, industrial strip, transformer strip, cable and HF cable strip and roofing strip. We manufacture all of our strip products using our Conti-M® technology which we developed inhouse, using continous casting technology to achieve a uninterrupted 24/7 process.
SHEETS, PLATES AND DISCS
MKM offers sheets, plates and discs in a wide range of dimensions. Our rolling mill is supplied by
our own foundries. Our strengths lie in a rich range of more than fifty alloys. We can also produce
customized to customer specific drawings plates and discs on request, even if the vertical manufacture range is high.
WIRE
MKM supplies the entire spectrum of wire rod, from thick, medium and fine wire to stranded wire
and wire rope. Our fully integrated Contirod® technology allows us to offer copper wire products
and alloy wire products (plain and tinned) with a wide range of finishes.
TUBES
MKM supplies tubes of different lengths, diameters and thicknesses. Our HETCU® (installation tubing) and HETCOOL® (refrigeration, air conditioning and medical technology) product families
are extremely well established in the market. Consistent quality management from our own
continuous casting plant, right through to the tube drawing process guarantees seamless tubing
with outstanding quality.
BARS
MKM is one of Europe’s leading producers of copper bars and profiles. Our production range encompasses a wide range of sizes in various grades of copper. We also produce customised profiles
based on technical drawings.
We can manufacture any of our products in compliance with the relevant DIN standards, internationally established standards and custom requirements.
All of our packaging is appropriate to the products it contains.
MKM Mansfelder Kupfer und Messing GmbH I Lichtlöcherberg 40 I 06333 Hettstedt I Germany
Telephone +49 3476 89-0 Fax +49 3476 89-2090 Email info@mkm.eu Web www.mkm.eu
DR-Stranded wire/plain wire rope-EN-10-15
CUSTOM SOLUTIONS
MKM develops solutions tailored entirely to its customers’ requirements. With the technical means
and many years of experience, we regularly find unconventional solutions.