Bare Brass Wire (65%) - 0.4mm (400 Micron - 25 AWG)

Bare Brass Wire (65%) - 0.4mm (400 Micron - 25 AWG)

If you need help figuring out what you need to achieve a certain resistance, please see this helpful calculator:


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5 For The Price Of 4

Things To Know:

FREE UK Delivery For Orders Over £20 - FREE Recorded Delivery Over £30

Wires Spooled, Packed and Dispatched From Our Factory In Warrington

90% of the time we will dispatch orders placed before 1PM on the same day. If our machines are tied up then we may need an extra day for production.

Look out for the Same Day Dispatch banner on our home page. This banner is live when we are ready for same day dispatch

About The Wire:

This is a soft wire. It is suitable for many technical requirements, as well as several craft applications.

It is pliable and easy to cut with scissors.

These coils are an ideal size and are designed to suit every pocket.

Please contact us directly if you require a larger length of this wire or wholesale details (

Please contact us directly if you require a larger length of this wire or wholesale details (

Common Application(s):

This wire is produced to be made into mesh. It is a very high quality 'pure' brass material.

This 65/35 Brass wire is a wire industry staple, and it has been made available to purchase through this site for the first time.

Standard 65% Brass uses include: Handrails, Grillwork Tanks, Radiator Cores, Push Plates, Finish Hardware, Hinges, Stencils, Kick Plates, Locks, Socket Shells, Screw Shells, Reflectors, Lamp Fixtures, Flashlight Shells, Grommets, Eyelets, Screws, Rivets, Fasteners, Pins, Bead Chain, Springs, Chain, Fasteners, Sink Strainers, Plumbing Accessories. This gives you a picture of the capability of this metal.

Dimensions of Wire:

Diameter - 0.4mm (400 Micron - 25 AWG)

Length - Various

Weight - Various

Spool Type - White Plastic Spool (as pictured)

Technical Specification:

Brass wire is a copper/zinc alloy. 65/35 is the relevent measure of copper to zinc. In other words this wire is 65% copper and 35% zinc. The higher the percentage of zinc in the alloy the greater the cold working strength.

Cu Fe Pb Zn
Min/Max 63.0 - 68.5 0.07 0.09 Rem
Nominals 65.0000 - - 35.0000

Coefficient of Thermal Expansion - 20.3 · 10 6? per °C (20-300 C)
Density - 8.47 gm/cm3 @ 20 C
Electrical Conductivity - 0.158 MegaSiemens/cm @ 20 C
Electrical Resistivity - 6.38 microhm-cm @ 20 C
Melting Point Liquid US - 932 C
Melting Point Solid US - 904 C
Modulas of Elasticity in Tension - 103400 MPa
Modulas of Rigidity - 38610 Mpa
Specific Gravity - 8.47
Specific Heat Capacity - 377.1 J/kg · °K at 293 K
Thermal Conductivity - 116.0 W/m · °K at 20 C

Delivery of Product:

This wire is kept in stock. We do our absolute best to ensure that the site is kept up to date with the latest stock levels.

Once an order is placed it should be shipped within 1 working day. This may not be the case if it's especially complicated to put together, or if we have to wait for a machine to be free to produce the spool.

Please contact us if your order MUST be shipped within a certain timeframe.

Through our checkout you can order your shipment using the following methods:

- Default option for UK delivery - 1st Class Royal Mail - 1 - 2 day arrival speed usually
- Recorded option for UK delivery - 1 day arrival speed from shipment usually
- Courier option for UK delivery - 1 day arrival speed

- Default option for international delivery - Standard Airmail - 5 - 14 day arrival speed usually
- Recorded option for international delivery - 3 - 10 day arrival speed from shipment usually

Opening Times:

We (The Crazy Wire Company) are an industrial manufacturing and supply company. We operate out of our factory in Warrington. We DO NOT have a public shop for visitation.

If you wish to come in and see our range then you MUST call ahead. This is because the factory may not be suitable for visitation at any one time. Forklift trucks and other larger vehicles and machinery operate in our warehouse and it's not suitable for unscheduled visits from the general public. Please call us on 01925 406 602 if you wish to arrange for a time to visit our factory.

We are open from 7AM - 5PM from Monday to Friday. We DO NOT operate on Saturdays or Sundays. Orders placed on a Saturday or Sunday will be picked up for production by the morning shift on the subsequent Monday.

Shop With Confidence:

Our group of companies has been operation for over 150 years. We have a huge amount of stock in our warehouse in Warrington and we're always using our contacts to add to our range.

If you have any questions about anything to do with our products, our service or wire and mesh in general, then please contact us at

Happy Shopping


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