What is a maximum temperature resistance rating?
What is a maximum temperature resistance rating? |
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A soldering and brazing mat is made from a combination of high temperature yarns and coatings designed to resist burning and withstand heat. Further information on the different yarns and coatings can be found in the section: What is a soldering and brazing mat made from? | |||
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High temperature textiles manufacturers will give two maximum temperature resistance ratings for each yarn and particular coating. These are classed as follows:
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Continuous temperature resistance is defined as the highest temperature at which a fabric can function for an extended period without burning or losing any of its properties. | |||
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Short temperature resistance is the peak temperature that the material can tolerate over a short period (usually seconds) without sustaining permanent damage. It is usually a few hundred degrees higher than the continuous temperature resistance. | |||
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Each soldering and brazing mat has its own individual temperature resistance rating, which is stated on the packaging. | |||
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For example, the soldering and brazing mat on the left is made from woven glass fibre and has a continuous temperature resistance rating of 600°C.
This means that the mat will resist temperatures from a heat source such as a soldering gun up to 600°C for the length of time your project takes to complete. |
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Although the continuous temperature resistance rating is given, it is not often that a soldering and brazing mat manufacturer will specify the short temperature resistance rating too.
This is because subjecting the mat to temperatures above the specified maximum continuous temperature – even for short bursts – will reduce the lifespan of the mat. Avoid directing any flame at the mat and stay within the temperature limit. |
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A summary of the temperature ranges of soldering |
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Soft solders have a ‘low’ melting point, usually ranging from 90°C and 400°C whereas with hard solders, it can be anything from 450°C and 850°C. | |||
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Brazing above 850°C is possible as long as the melting point of the solder is below that of the base metals.
Successful silver soldering usually takes place between 600°C and 900°C. |
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What are the max temperature resistance ratings of a soldering and brazing mat? |
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The continuous temperature resistant ratings of a soldering and brazing mat can vary between 600°C and 1,260°C plus!
For example, if you have a soft soldering project such as soldering wire to a printed circuit board, then using a soldering and brazing mat that resists temperatures up to 600°C will suffice. |
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For joining precious metals or for brazing copper pipe however, you will need to use a mat capable of withstanding higher temperatures.
Make sure you choose a soldering and brazing mat that can resist the temperature required for your soldering process. |
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