Stainless steel: Stainless steel is comprised mostly of iron, with a mixture of nickel, manganese, and chromium. Stainless steel is highly lustrous, and makes a good thin and sturdy frame with strong corrosion resistance. Although it is hard to make eyeglass frames with stainless steel due to soldering and welding difficulties, stainless steel temples are especially springy. Qualities of stainless steel frames include light weight, low toxicity, and strength. Many stainless steel frames also are nickel-free and thus hypoallergenic. Stainless steel is readily available and reasonably priced. Most stainless steels contain anywhere from 10 to 30 percent chromium, which provides excellent resistance to corrosion, abrasion and heat.