Sifalumin No 27 - 1.6mm

Product Code RO151425

Product information
A 1.6mm 2.5kg 5% silicon aluminium alloy-welding TIG rod suitable for welding duralumin, cast and wrought alloys as well as other 4-series aluminium's. Can be used TIG or in Oxy Acetylene.

EN ISO 18273 S Al 5356 (AlMg5)
BS 2901 5356 (NG6)

Typical Properties
Melting Point 640°C
Ult Tensile Strength 250 N/mm²
Hardness 60

Material to be Welded
Suitable for welding forged and cast aluminium-manganese/ aluminium-magnesium components and dissimilar
aluminium alloy grades containing a maximum of 5% Mg. Can also be used to weld components which are to be subsequently anodised. Pre-heating up to 1200°C may be necessary, subject to material size and thickness. Wire brushing between passes is recommended to ensure removal of surface oxide build up. Suitable for use on plate, pipe, tube and components.
Ensure that parent metal surface is cleaned and fully degreased prior to welding..

Available Formats
1.6mm RO271601
2.4mm RO272401
3.2mm RO273201

1.6mm RO271625
2.4mm RO272425
3.2mm RO273225

In Stock
SizePrice (ex VAT)Quantity
Each £35.00

When will I receive my order?

All products are typically delivered within three working days, If however you need your goods quicker call our customer services on 01937 534318 and we will prioritise your order. On the rare occasions your order may take longer than three days you will be advised by metals4U.


  • Tell us what you think please

Leave a review :-

Mobile Number
Please rate:

How to Write a Great Product Review

Use the product before reviewing it, tell us about the product's features and be specific, mention things that will help other people choose the best product.

Please Avoid

Information that may change, such as price.
Personal information about yourself, other companies or other websites.
Inappropriate language and attitude.


  • Be the first to ask a question.

Ask a Question :-

Mobile Number

How to Ask a Great Question?

It's not how you ask a question that's important, it's the answer you get. Here at Metals4u™ we pride ourselves in having both knowledgeable and approachable customers as well as an experienced sales team who are always willing to answer any metal related questions. Having an online hub to share information is a great way to share experiences and knowledge helping to grow our Metals4u™ community.
  • Pro-quality tools & power tools
  • Our customers love us - Trust pilot independent reviews
  • Metal sheets cut to size
  • Mild Steel Reinforcing Mesh
  • metals4u polishing service and pre-polished metal products
  • universl beams, RSJ's and I-beans
  • nuts, bolts, screws and other fasteners

Payments processing by:

Payment Processing by Worldpay SSL verfied and secured by