No, you're confusing strontium (alkaline earth metal between calcium and barium, melting point 800 deg. C, density 2.54, atomic number 38, etc), with it's radioactive isotope strontium-90, a beta-emitter with a half-life of 29.1 years. Ordinary strontium isotopes are non-radioactive, and have many uses in industry. For instance, the salts (specifically the perchlorate) imparts a beautiful deep red colour to fireworks and is used by the ton for that purpose, especially in China. They are also used for ceramic glazes.

Speaking of glazes, if you want something to be worried about and have old ceramics around the house, look for ones that have a clear yellow glaze. The best colour was produced with uranium salts...

pca