coopra® wire

Products

Our stainless steel wire has a diameter from 0.035mm to 2.00 mm.
You can order it soft or hard.
The lubrication will be done according to your wishes and the coils comply with DIN standards.

This is the standard grade of austenitic stainless chromium-nickel steels and the first commercially available stainless steel (currently accounting for 33% of total production). It is a steel with moderate corrosion resistance and good cold formability. The relatively high carbon tolerance poses a certain risk of chromium carbide formation at grain boundaries during heat treatment, which reduces resistance to intergranular corrosion. Solution annealing is then necessary to dissolve the carbides, followed by rapid quenching to prevent any new precipitation.
For critical applications, 304L steel with a low carbon content is preferable. In environments containing chlorine or salt water, or for products in constant contact with the skin, 316L steel containing molybdenum is more suitable. Severe deformation can cause the steel to become slightly magnetized. This steel is not easy to machine.
It is weldable with and without filler material.

General Properties:
Corrosion resistance - Good
Mechanical Properties – Average
Forgability – Good
Weldability – Excellent
Machinability – Moderate

Main application:
Automotive industry, construction industry, chemical industry, decorative purposes and kitchen furnishings,
Electronic equipment, food industry, mechanical engineering

An austenitic chromium-nickel steel with a slightly lower carbon content, which provides increased resistance to intergranular corrosion. The mechanical properties of 1.4301 and 1.4307 are nearly identical; only the strength values of 1.4307 are slightly lower due to its reduced carbon content.
Material No. 1.4307 is a higher grade material than No. 1.4301. Material No. 1.4307 can be substituted for Material No. 1.4301, but not vice versa.

General Properties:
Corrosion resistance - Good
Mechanical Properties – Average
Forgability – Good
Weldability – Excellent
Machinability – Moderate

Main application:
Automotive industry, construction industry, chemical industry, decorative applications and kitchen furnishings, electronic equipment
Food industry, mechanical engineering

Low-carbon austenitic chromium-nickel-molybdenum stainless steel.
Due to its molybdenum content, the material exhibits improved chemical resistance. It cannot be heat-treated.
This steel is easy to form and weld, but it is not easy to machine.
This steel complies with the EN 1811 standard and is suitable for products that come into prolonged contact with the skin.
Suitable for mechanical components with increased corrosion resistance requirements, particularly in chlorine-containing media.

General Properties:
Corrosion resistance – Very good
Mechanical Properties – Average
Forgability – Good
Weldability – Excellent
Machinability – Moderate

Main application:
Automotive industry, construction industry, chemical industry, decorative applications and kitchen fixtures, electronic equipment, oil and gas industry/petrochemical industry, food industry, aviation, mechanical engineering, medical and pharmaceutical industry

The corrosion resistance of 316Ti is neither better nor worse than that of 1.4404. The use of 1.4571
compared to 1.4404 is only justified if high-temperature strength is required

General Properties:
Corrosion resistance – Very good
Mechanical Properties – Average
Forgability – Good
Weldability – Excellent
Machinability – Fair to Poor

Main application:
Equipment and piping construction, construction industry, chemical industry, food industry, mechanical engineering, medical and pharmaceutical industry, shipbuilding

Grade 1.4828 / AISI 309 is a heat-resistant austenitic chromium-nickel stainless steel.
Scale-resistant up to 1000°C. Low resistance to oxidizing sulfur-containing gases.

General Properties:
Corrosion Resistance - Low
Mechanical Properties – Average
Forgability – Good
Weldability – Good
Spannability – Good

Main application:
Apparatus construction for high-temperature applications, automotive industry, chain industry, mechanical engineering, furnace construction, sieves and grates

Stainless ferritic chromium steel, magnetically attractable but not hardenable.
This steel is less corrosion-resistant than most 300 series (AISI) austenitic steels.

General Properties:
Corrosion resistance - Good
Mechanical Properties – Average
Forgability – Good
Weldability – Poor
Machinability – Moderate

Main application:
Construction industry, Decorative purposes, Electronic equipment, Food industry.

Our copper wire is made of 99.9% % electrolytic copper (CuETP1).
You can order the copper wire in bare, tinned, and gold-cemented.
You can choose a diameter from 0.05 mm to 2.50 mm.
The coils comply with the DIN standards.

Copper bare

Copper wireCu – ETP1
(according to DIN EN 13602)
E-Cu 58
(according to DIN 40 500)
MaterialCW003A
(according to DIN EN 13602)
2.0065.10
(according to DIN 40500)
Conductivity58.5 m/(Ω⋅mm²)
Density8.925 kg/dm³

Tinned copper

Copper wireCu – ETP1
(according to DIN EN 13602)
E-Cu 58
(according to DIN 40 500)
MaterialCW003A
(according to DIN EN 136002)
2.0065.10
(according to DIN 40 500)
ZinnTin 99.90
(according to DIN 1704)
Tin platingaccording to DIN EN 13603
Conductivity58.5 m/(Ω⋅mm²)
Density8.925 kg/dm³

Plastic spools

Coil designationDIN / StandardFlange diameter in mmCore diameter in mmRecording Ø in mmFilling weight in kg
100,0004639910063161,6
125,0004639912580163,5
160,00046399160100227,5
200,000463992008022/3614
250,0004639925016022/12718-20

Soft wires

tinned wires

Wires ØCross-sectionElectrical resistanceStretchElectrical resistanceStretch
0.05 mm0.002 mm²8703,866 Ohms/km10 %8780.260 Ohms/km7 %
0.07 mm0.004 mm²4440.748 Ohm/km10 %4479.724 Ohms/km7 %
0.10 mm0.000008 mm²2175.966 Ohms/km15 %2195.065 Ohms per kilometer13 %
0.12 mm0.011 mm²1511.088 Ohm/km15 %1524.351 Ohms/km13 %
0.14 mm0.015 mm²1110,187 Ohm/km15 %1119.931 Ohms/km13 %
0.15 mm0.018 mm²967,096 Ohms/km15 %975.584 Ohms/km13 %
0.16 mm0.000031 in²849,987 Ohms per kilometer15 %857,447 Ohms per kilometer13 %
0.18 mm0.025 mm²671,595 Ohms per kilometer21 %677,489 Ohms per kilometer19 %
0.20 mm0.031 mm²543,992 Ohms per kilometer21 %548,766 Ohms/km19 %
0.22 mm0.038 mm²449,580 Ohms/km21 %453,526 Ohms per kilometer19 %
0.23 mm0.042 mm²411,336 Ohms per kilometer21 %414,946 Ohms/km19 %
0.25 mm0.000049 in²348.155 Ohms/km21 %351,210 ohms per kilometer19 %
0.26 mm0.053 mm²321,889 Ohms per kilometer21 %324,714 Ohms per kilometer19 %
0.28 mm0.0000961 sq mi277,547 Ohms/km21 %279.983 ohms/km19 %
0.30 mm0.071 mm²241.774 ohms/km21 %243,896 Ohms per kilometer19 %
0.35 mm0.096 mm²177,630 Ohms/km22 %179.189 Ohm/km20 %
0.40 mm0.126 mm²135.998 ohms/km22 %137.192 Ohm/km20 %
0.50 mm0.196 mm²87.039 ohms/km22 %87.803 ohms/km20 %
0.60 mm0.283 mm²60,444 Ohms/km24 %60,974 Ohms/km22 %
0.80 mm0.503 mm²33,999 Ohms per kilometer24 %34,298 Ohms per kilometer22 %
1.00 mm0.785 mm²21,760 Ohms per kilometer24 %21,951 Ohms/km22 %
1.20 mm1,131 mm²15.111 Ohms per kilometer26 %15.244 ohms/km24 %
1.40 mm1,539 mm²11.102 ohms/km26 %11,199 Ohms per kilometer24 %
0.06 inches2,011 mm²8,500 Ohms per kilometer28 %8.574 Ohms/km26 %
2.50 mm4,909 mm²3,482 Ohms per kilometer28 %3,512 Ohms/km26 %

Our aluminum wire complies with the EN AW5754 standard. The spools comply with DIN standards.

Properties
– suitable for welding
– easily moldable
– easy to anodize
seawater resistant

Strength up to 300 MPa

Application
Vehicle manufacturing
– Machine and Equipment Manufacturing
Container Construction
Shipbuilding
Food industry
– Temperature insert up to 120°C

Our galvanized iron wire is electro-galvanized or hot-dip galvanized.
You can order it in a diameter of 0.15 mm to 1.50 mm.
It is also available in oiled and dry finishes.
For your production, the galvanized iron wire is very smooth and has a drawable surface.
The coils comply with the DIN standards.

Our wire is evenly coated with a high-quality oil.
A precision-controlled pump distributes the oil onto the wire.

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