321 Grade Stainless Steel Wire - 0.32mm (320 Micron - 28 AWG)

321 Grade Stainless Steel Wire - 0.32mm (320 Micron - 28 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:

These are soft wires. They are easy to handle and cut.

All forms of stainless steel are long lasting in the correct conditions. This wire should last over 25 years given the correct environment and treatment.

These spools are small and are designed to suit every pocket.

Please contact us directly if you require a larger spool length of this wire (crazywire@themeshcompany.com)

Common Application(s):

This wire is in our stocks for use for weaving mesh.

SS321 is the basic austenitic SS304 grade but is stabilised by Titanium.

SS321 grade is commonly used for: aircraft exhaust manifolds, expansion joints, bellows, furnace parts, heating element tubing and heat exchangers.

Dimensions of Wire:

Diameter - 0.32mm (320 Micron - 28 AWG)

Length - Various Options

Weight - Various Options

Spool Type - Large plastic bobbin.

Technical Specification:

C - Max - 0.08
Mn - 2.00
Si - 0.75
P - 0.045
S - 0.030
Cr - Min - 17.0 Max - 19.0
Mo -
Ni - Min - 9.0 Max - 12.0
N - 0.10
Other - 0.70

Electrical resistivity ( µOhmcm ) 720
Density (kg/m3) - 8027
Elastic Modulus (GPa) - 193
Mean Coefficient of Thermal Expansion (?m/m/°C) - 0-100°C - 16.6 0-315°C - 17.2 0-538°C - 18.6
Thermal Conductivity (W/m.K) - at 100°C - 16.1 at 500°C - 22.2
Specific Heat 0-100°C (J/kg.K) - 500
Electrical Resistivity (n?.m) - 720

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 - 2 working days. 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 crazywire@themeshcompany.com.

Happy Shopping


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