A:Answer Background...We've had the LG 4616 induction range for 2 weeks. After 30 years of gas cooktops, we decided to go with new technology. It was a good decision. Regarding the cooktop surface...It seems durable and able to withstand daily use without scratching. One observation...thoroughly clean the the bottom of your pots. Remove all built-up and burnt on food, etc. Haven't tried it yet, but dragging old cast iron with residue on the bottom might scratch the cooktop, so clean the bottom first. Also, keep the cooktop clean. There are plenty of products, even water and a clean rag will work. I noticed you can buy silicone induction cooktop mats to protect the surface and you can slide your pots and skillets on that.
Summary:
1. The cooktop surface doesn't seem prone to scratching, if you keep the bottom of your vessels clean.
2. I have no idea about scratching and its impact on induction performance.
Note: This glass-ceramic surface seems pretty tough and resilient.