Metal frames

Question 1

• Most widely available metal frame available
• The material characteristics is that the material is relatively inexpensive and is often used in combination with other materials one of the primary disadvantages is that about 10% of the population can be allergic to the material raincoat is in an able to help reduce that effect

Answer 1

Nickel materials

Question 2

• Resists corrosion
• easily adjusted
• excepts a wide range of colour coding’s

Answer 2

Nickel

Question 3

-Contains no silver
-also known as a German silver
-primarily used for hinges and pieces bridges ornamental trim and has an inner core for polyamide temples
More than 50% copper 25% nickel in the balance zing most commonly used for frame parts not fronts

Answer 3

Nickel silvers

Question 4

• Used in many metal frames as it is corrosion resistant and very durable
• often used as a stabilizing material 2/3 nickel, 1/3 copper and usually a small amount of iron
• durable and corrosion resistant can be highly polished

Answer 4

Monel

Question 5

• Not as widely used as it once was it is light in weight and low intensity and is not corrode
• easily coloured but the colours tend not to be stable
• difficult to solder so must be fastened with screws and rivets
• very little flexibility

Answer 5

Aluminum

Question 6

• And alloy made from iron, chrome, manganese and nickel
• have a resistant to corrosion
• can be made very thin yet sturdy
• very flexible but difficult to adjust

Answer 6

Stainless Steel

Question 7

• has become much more widely used in recent years
• very lightweight, strong,corrosion resistant, hypoallergenic
• Can be made with other allies to increase flexibility
• Can only be soldered with lasers
• More expensive

Answer 7

Titanium

Question 8

• alloys that have the ability to return to their original shape. The most common memory metal is a nickel and titanium alloy but other alloys consisting of copper and aluminum, titanium and cobalt, and aluminum, vanadium and titanium
• Memory middle is usually used for bridges and temples
• Can be broken if flexed through to too great an angle
• There are a variety of other free materials but they tend to be specialty material that will not be covered

Answer 8

Memory metals

Question 9

To reduce the risk of a reaction for people who have a history of skin reactions to wearing previous frames try to use or recommend free materials that are known to be hypoallergenic

Answer 9

Optyl, polyamides, titanium, stainless steel

Question 10

Allergies can also happen with nose pad materials most often silicone some people with latex allergies me also react to acetate or plastic nose pads

Answer 10

Glass nose pads, Gold plated or metal nose pads, Titanium nose pads, Crystal nose pads