Opticians Handbook 2005 - 20/20 Magazine

Material Features & BenefitsIndicates MetalsIndicates PlasticsMaterialsAluminum andAnodized AluminumArgesteBetaTitaniumMonelScandiumSafitex ®Surgical Stainless SteelTitanium(T100 = >90% titanium)Zyl, Plastic Acetate(zylonite or "zyl")Cellulose Propionate(propionate)GrilamidOptyl ®TrogamidInfo• Light & strong (50% lighter than titanium)• Little flexibility, adjusting riveted hinges difficult• Anodized, Stronger, less scratch resistant than Aluminum• Imbedded spring hinges available• Latest generation Surgical Stainless Steel• Nickel free• Flexible• Strong & lightweight alloy of titanium, vanadium• No nickel• More flexible than pure Titanium• Most used frame metal, easy to shape• Copper & nickel in a 2:1 ratio• Strong solders and finishes• Highly ductile, shapeable and corrosion resistant• 40% Lighter than titanium, ultra lightweight• Unique ultra durable alloy• Great designs without soldering or welding• Flat metal cut from one sheet• Lighter than regular metal frames• Sàfilo provides the highest quality available, 100% Nickel Free• Corrosion resistant combines lightweight with strength forcomfort and durability• Extremely lightweight• Highly durable• Corrosion resistant• Polishes well, electrolytic color finishes• Casting adds design features• Adjusts well• Most common, all colors, patterns• Made from cotton seed fiber, wood flakes and plasticizers• Softens over time requires readjustment, too much heat canmelt or burn the frame• Metal temple core is required for rigidity• Frame can dry out or become brittle, acetone will dissolve theframe heat to 120°C to adjust• Injection molded, lighter than plastic acetate• Lightweight, strong and flexible, color is added byan over-coating• Excess heat bubbles the frame, beads will pock the surface• NO acetone or alcohol• Thermoplastic molded frame• Lightweight, 20% lighter than zyl• No plasticizers to dry out• Cold glazing for thin lenses, slight heat for highpowers,