What Warren Buffett Can Teach You About Tungsten Carbide

10. The Brittle Trade-Off and the Security of Lifetime Warranties
While the extraordinary hardness of tungsten carbide is its greatest asset, this same property creates its single most notable drawback: a characteristic known as "brittleness." Hardness and brittleness are often two sides of the same metallurgical coin; unlike malleable metals such as gold, which will bend, dent, and deform under extreme impact, tungsten carbide may chip or crack if subjected to a sudden, excessive force. For example, a heavy steel hammer blow or a hard drop onto a sharp granite corner might compromise the ring's structural integrity, causing it to break, whereas a gold ring would simply flatten or bend. It is a critical distinction that the ring is immensely scratch-resistant and will never bend, but it is not completely shatterproof. However, this is largely a theoretical concern for most wearers, as a ring must be struck with an improbable and substantial amount of force to break. Jewelers have largely mitigated this concern and leveraged the material's durability by universally offering comprehensive lifetime warranties. These warranties are a cornerstone of the tungsten market and typically cover any scenario where the ring breaks, chips, or even experiences irreparable damage to the finish (such as black plating wear). This industry standard of backing the product with a guarantee of replacement reinforces the low-maintenance appeal of the material. Ultimately, the lifetime warranty turns the brittle trade-off into a non-issue for the consumer, assuring them that for the entirety of their marriage, the physical symbol of their commitment will always be whole, scratch-free, and perpetually brilliant.
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