Summer is back with temperatures reaching up to 30 degrees Celsius – but what does heat actually mean for different metals? In this article, you’ll learn how Aluminium, Stainless steel and Brass behave at high temperatures and what you should keep in mind to ensure your construction projects are a success even during the summer months.
Aluminium, Stainless Steel and Brass – The Facts
These three metals are among the most commonly used materials:
- Aluminium stands out thanks to its low weight and excellent formability.
- Stainless steel is particularly strong and rust-resistant, depending on the alloy.
- Brass is a copper alloy made from copper and zinc, known for its characteristic yellowish-red color.
A Comparison of Metals
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The Behavior of Metals at High Temperatures
Aluminium
- Low melting point: 660 degrees Celsius.
- Expands when exposed to heat, which can lead to cracks. Its ductility (the ability of a material to deform before breaking) increases at temperatures above approximately 200 degrees Celsius.
- Nevertheless, aluminium is UV-resistant and does not fade under direct sunlight, although it can become very hot.
Stainless Steel
- High melting point: 1,400 – 1,540 degrees Celsius (depending on the alloy).
- High load-bearing capacity even at elevated temperatures.
- Low thermal conductivity prevents excessive heat build-up.
- UV-resistant thanks to the passive protective layer on its surface.
Brass
- Higher melting point: 900 – 940 degrees Celsius (depending on the zinc content).
- High load-bearing capacity even at elevated temperatures.
- UV-resistant, but when exposed to skin contact or moisture, brass can tarnish, develop a patina and may leave discoloration on the skin.
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Our Conclusion
Whether aluminium, stainless steel or brass, all three materials are extremely durable and can easily withstand higher summer temperatures. However, for your home and garden projects, you should keep in mind that some materials can become very hot when exposed to direct sunlight. For example, aluminium furniture is best placed in shaded areas.
Brass may also leave discoloration on skin or clothing when it comes into contact with sweat, although these marks can usually be washed off easily. The patina that develops on the material itself when exposed to moisture can even become a real eye-catcher, adding a trendy antique look to your garden.