The top photo are sample of extracted broken key. (The key at bottom photo is purposely cut into half)
Why some keys breaks more easily? It is the material that matters.
We are not sure what is the material of the first photo, but high possibility is Zinc, a brittle metal. Zinc is a bit grey coloured. Zinc is indeed easily broken. In Kuching, if you found key duplication at RM3 or below, probably it is Zinc. All zinc-key comes from China.
The bottom photo is our brass key. You can differentiate easily by the color. Brass is almost gold coloured. Much more durable. Most commonly used as a standard key.
More comparison photos below:
Next time you need a key duplicated, make sure you get a brass key.
There is another material, even better than brass key, but we will share more on that in the future.
Advise from locksmith,
www.finelockshop.com/about
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