LOT of 100 Stainless Steel, Type 304, Butterfly Style Ear Nuts ~ Perfect for Ear Studs ~  - Pad sections (part against your ear lobe) measure 5mm wide x 6mm long x 3mm high.
- Material is 304 stainless steel.
- The color is a nice bright silver, not greyish white like plain steel.
- Perfect for keeping your earrings safe in your ear or secure on the display card.
- Lot of 100 (50 pairs)
- 304 stainless steel is the most popular grade of stainless steel. It is 18-20% chromium, 8-10.5% nickel, 0.08% carbon, plus iron and the trace elements listed above. It is commonly used in the food industry. The same corrosion and stain resistance that make it great for food handling, also make it popular for jewelry.
- The advantage of stainless steels over plated steels is that, if scratched or damaged, the stainless steel 'self-repairs' as a new chromium-oxide layer is formed. In plated steels, scratches in the plating can lead to corrosion of the steel underneath. In general, the higher percentage of chromium, the stronger the corrosion resistance of the steel. Other metals are added to the alloy to give the steel other properties, such as strength and malleability. Nickel is added to strengthen the protective oxide layer.
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