Pet ID tags wear out because they hang around the neck of a dog. The act of constant rubbing and abrading against other tags, fur, sand, dirt, collar attachment hardware, etc. causes metal to be removed from the tag. Hence, the tag loop often wears through and the engraving is worn off. Sometimes the tag becomes bent, shriveled at the edges, or completely breaks off.
The majority of inexpensive pet id tags on the market today aren't durable because they are too thin and made out of soft metals. Soft metals do not make for durable pet id tags.
Tag metals can be classified by hardness. The Mohs Scale, invented by a German mineralogist in 1812, measures material hardness. It is the least scientific, but easiest to understand of several hardness scales available.
As you can see, pewter, aluminum, copper, sterling silver, brass, and nickel are all quite soft as compared to steel or of course diamonds which are the hardest. Talc leads the scale as the softest for comparison.
There is quite a range of hardness for steel. Stainless steel falls into the 6-6.5 range. Stainless steel pet id tags are the hardest and most durable pet id tags you can buy.
The thicker the stainless steel, the more durable the pet id tag will be. Most tags measure less than 1/16th of an inch (about the thickness of a dime). To be called a durable pet id tag, our tags measure more than twice that thickness, 1/8th of an inch (about the size of a dime and a quarter put together).
The stainless steel alloy we use is also non-corrosive, which by the way, is not true of all stainless steels. Rusting and tarnishing causes metal to be eaten away. Brass, pewter, sterling, copper, and nickel all react and discolor.
If you are shopping for a durable pet id tag, make sure you look for a thick stainless steel tag. We guarantee our tags to be durable pet id tags for life.
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