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sif

Q. Although Sifalumin No 37 tig rod is recommended for welding Aluminium 5038, can Sifalumin No 27 be used?

A. Sifalumin No 27 is not recommended.
Sifalumin No 37 is the recommended rod as it contains 5.3% Magnesium and gives optimum weld strength.

Q. Brazing LG1, LG2 and LG4 gun metal with Sifalbronze No 32, can I get a better colour match?

A. To improve colour match use Sif Phosphor Bronze No 8.
Note, if parent materials have a composition including lead, this will make the joint porous.

Q. Can you please recommend a welding rod preferably Tig that is suitable for use as a plain bearing surface when applied to a shaft journal made from EN8 steel. The shaft journal runs in a malleable cast iron bore and is lubricated with thick transmission oil . This journal was originally cast iron and proved to be only weldable with sifbronze No2 however the rate of wear proved unacceptable?

A. There are a options that need consideration during this application and there are choices that need to be made depending on the size of the journal area and the shaft size. Fusion Welding may not be the best alternative as heat input on shafts can give material issues and cause distortion althogh welding of shafts can be succesfully achieved if carried out correctly.Manual Tig is not neccesserially the best option due to the welding speed and therefore heat input. A good bearing surface with TIG on steel can be achevied with our phosphor-bronze rod with 7% tin, Sifphosphor Bronze No8 - also available in MIG as SIFMIG 8..SIFsteel 312 could also be used to weld this material which is also avaliable in MigSIFmig312. On the Cast Iron our Super Silicon No9 rod provides a better weld in Oxy/Fuel gas as it is metallurgically much closer to the parent metal as it is a cast rod. The consideration here would be the size and involvement of the casting as pre and post heating would be required. Hilco Pure Nickel could also be used to effect a repair .

Q. Melting point of Sifbronze No.1 brazing rod?

A. Approx 875c - 895c

Q. One of our suppliers uses your Rods : Sif silver Solder No 38 1.5mm in the manufacture of one of our parts. We are developing a new application and now need to confirm if this Silver Solder is suitable for Potable Water applications and complies with the UK WRAS requirements?

A. Please note that our Sif Silver Solder No38 contains Cadmium, and that we would not therefore recommend it for use in water-transport applications. We suggest that you switch to our Cadmium-Free Sif Silver Solder No39 38% Ag instead.

Q. Poor finish using Sifsil Copper 968 when Tig brazing bike frames using both AC and DC setups?

A. To improve finish use SIFALBRONZE No 32. For best results use with a zirconiated electrode, with pure argon gas, on an AC set up.

Q. Regarding Tig welding high tensile steel to mild steel, at present useing Sifsteel A15, getting a honey comb effect?

A. The best tig rod to use is the Sifsteel HF6.

Q. Sif 101 wire is it annealed?

A. No,the material is hard