What is BS 5245 - Phosphoric acid based flux for soft soldered joints about?
BS 5245 is a British Standard that discusses the phosphoric acid based flux for soft soldered joints in stainless steel. BS 5245 is intended to ensure that purchasers of phosphoric acid based flux for use in this application may be certain that such fluxes and their residues are safe, i.e. not corrosive in normal use, towards the tube, fittings, or solder in the capillary joints after the joint has been made.
BS 5245 specifies requirements for phosphoric acid-based flux for soft soldered joints in stainless steel. The flux is considered to be particularly suitable for making soft soldered capillary joints in a stainless steel tube in accordance with BS 4127-2, with solder in accordance with BS EN 29453, and fittings of copper or copper alloy in accordance with BS EN 1254, or of stainless steel.
Who is BS 5245 - Phosphoric acid based flux for soft soldered joints for?
BS 5245 on phosphoric acid based flux for soft soldered joints is useful for:
- Phosphoric acid based flux manufacturers and buyers
- Product design engineers
- Mechanical engineers
- Quality control personnel
- Testing facilities
- Regulatory authorities
- Health and safety bodies
Why should you use BS 5245 - Phosphoric acid based flux for soft soldered joints?
Phosphoric acid based flux is designed primarily for the soft soldering of stainless steels. As these metals are often difficult to solder due to the tough oxide layer present on the surface of the steel alloys, using the right flux can remove the oxides and provide a clean surface for the solder to wet.
BS 5245 provides you with best industry requirements for composition, inspection and retests along with guidance for testing facilities, and packaging and marking requirements for phosphoric acid-based flux used for soft soldering of stainless steel.
Tests to determine solderability and demonstrate the presence of halogen content in phosphoric acid based flux is also covered.
Thus, if you are a manufacturer, BS 5245 can ensure the phosphoric acid based flux used for soft soldered joints in stainless steel are fit for purpose and can improve the efficiency of soldering operations to produce reliable welds
