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Weld Star ER 100S-G Low Alloy MIG Wire

  • Provides a strong and durable weld
  • Reduces the risk of cracking
  • Improves the overall quality of the weld
  • Makes welding easier and more efficient
  • Can be used in a variety of industries and applications


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Weld Star ER 100S-G Low Alloy MIG Wire is a premium quality wire that is ideal for welding NiCrMo fine-grained steels for low temperature high strength applications. It is an extreme crack resistant alloy with high mechanical properties and excellent welding characteristics. It also has high impact strength at sub-zero temperatures down to -50°C.

Weld Star ER 100S-G Low Alloy MIG Wire is precision layer wound for superior wire feeding characteristics and is typically used in the industrial sectors of means of transport and ground movement, building industry, bridges, tanks, railway transport, mining industry, shipbuilding, and more.


  • Premium quality wire
  • Ideal for welding NiCrMo fine-grained steels
  • Extreme crack resistant alloy
  • High mechanical properties
  • Excellent welding characteristics
  • High impact strength at sub-zero temperatures down to -50°C
  • Precision layer wound for superior wire feeding characteristics


Description Part No.
ER 100S-G – 0.8mm – 15kg 3010203273
ER 100S-G – 1.0mm – 15kg 3010203275


Additional information
Weight N/A
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AWS Class

ER 100S-G

EN ISO Class

G 55 5 M21 Mn3NiCrMo


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 - 16834-A: G 55 5 M21 Mn3NiCrMo

AWS-Standard - A5.28: ER 100S-G

Weld Star ER 100S-G Low Alloy MIG Wire

Weld Star ER 100S-G Low Alloy MIG Wire

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