Sifalumin No 15 4043A Aluminium Rods – 1.6 mm x 2.5 Kg

Description

Sifalumin No 15 4043A Aluminium Rods – 1.6 mm x 2.5 Kg

• EN ISO 18273
• BS: 2901S
• Al 4043A (AlSi5)
• 4043A (NG21)

An aluminium alloy with 5% silicon, offering excellent flow characteristics and penetration. Suitable for welding duralumin cast (LM25) and wrought alloys 6063 (H9), 6061 (H20) and 6082 (H30).

• Weld will discolour if anodised.
• Can be used TIG or Oxy Acetylene.
• If used with Oxy Acetylene, use Sif No. 36 Aluminium brazing and welding flux.

WELDING POSITIONS 

• Ensure that the parent metal surface is cleaned and fully degreased prior to welding.
• Clean joints with a stainless steel brush.

TYPICAL WELD METAL COMPOSITION  

• Si: 5 %
• Al: Bal
• Melting Point: 635°C

TYPICAL MECHANICAL PROPERTIES

• Ult Tensile Strength: 120 N/mm²

MATERIAL TO BE WELDED

• Suitable for welding duralumin, cast and wrought alloys 6063 (H9), 6061 (H20) and 6082(H30), as well as other 4 series aluminium.
• The resulting weld will discolour if anodised [If the finished article is to be anodised, use 1050A, or 5356].
• Pre-heating up to 120oC may be necessary, subject to material size and thickness.
• Wire brushing between passes is recommended, to remove build up of surface oxides.