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Weld Star ER 307Si Stainless Wire MIG Wire

  • Weld Star ER 307Si Stainless Wire MIG Wire is easy to use and produces high-quality welds
  • It is ideal for a wide range of applications, including dissimilar welding
  • It is resistant to corrosion and cracking
  • It is available in a variety of diameters to meet your needs


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Weld Star ER 307Si Stainless Wire MIG Wire is the perfect choice for welding austenitic stainless steels. It is ideal for dissimilar welding between steel and stainless steel, armor plates, and exhaust systems. This wire is also suitable for depositing stress-relaxing buffer layers on crack-sensitive base metals, including hardfacing applications.


  • Austenitic stainless steel wire with a significant manganese content
  • High mechanical strength and excellent crack resistance
  • Increased silicon content promotes weld pool fluidity to give a smooth deposit appearance
  • Precision layer wound for superior wire feeding characteristics
  • Typically used on applications subject to atmospheric and corrosive media


  • Dissimilar welding between steel and stainless steel
  • Armor plates
  • Exhaust systems
  • Stress-relaxing buffer layers on crack-sensitive base metals
  • Hardfacing
  • Atmospheric and corrosive media


Description Part No.
ER 307Si – 0.8mm – 15kg 6011100215
ER 307Si – 1.0mm – 15kg 6011100217
ER 307Si – 1.2mm – 15kg 6011100219


Additional information


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Weld Star


0.8mm , 1.0mm , 1.2mm

AWS Class

ER 307Si

EN ISO Class

G 18 8 Mn


Click and Collect:
Free Click and Collect with no minimum spend from our warehouse on the Empress Park, Southampton with on-site parking. Once your order has been processed, we will advise you when it is ready for pickup.  Just want advice?  No problem.  Feel free to call in to speak to one of our friendly experts.

EWS Fleet Coverage Areas: 
Southampton | Eastleigh | Winchester | Alton | Farnham | Petersfield | Havant | Hayling Island | Waterlooville | Fareham | Portsmouth | Gosport | Chichester | Arun | Worthing | New Forest | Christchurch | Salisbury | Wiltshire | Test Valley | Basingstoke and Deane | West Berkshire | Reading | Hart | Waverley | East Hampshire | East Dorset | Hampshire | Bournemouth | Poole | Lymington | Ringwood | Verwood | East Preston | Goring-by-Sea | Lancing | Shoreham-by-Sea | Steyning | Bramber | Horsham | Adur

Nationwide Delivery (all items excluding gas cylinders):
Free UK mainland (England, Scotland and Wales) delivery on orders over £85 inc. VAT.
UK mainland delivery is £7.50 inc. VAT on orders under £85 inc. VAT.
UK islands and Northern Ireland shipping costs may vary.

UK Delivery for Gas Cylinders:
Shipping costs for gas cylinders are calculated at checkout once the delivery postcode is entered.

International Delivery:
Please contact us for an accurate delivery quote.



EN/ISO-Standard - 14343-A: G 18 8 Mn

AWS-Standard - A5.9: ER 307Si

Weld Star ER 307Si Stainless Wire MIG Wire

Weld Star ER 307Si Stainless Wire MIG Wire

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