Methods of Joining Metals Quiz and Flashcards

Study Notes

Types of Metals

Aluminum is a soft, nonmagnetic silvery metal with a light weight, low melting point, high thermal and electrical conductivity, and is corrosion resistant.
Aluminum readily combines with oxygen to form aluminum oxide, a transparent film that makes it corrosion resistant.
Aluminum is subject to galvanic action and should be electrically insulated from direct contact with metals other than zinc, cadmium, magnesium, and nonmagnetic stainless steel.
Brass should not come into direct contact with iron, steel, or stainless steel if there is an electrolyte present or the possibility of one forming at the point of contact.

Brass

Brass is used in architecture for doors, windows, door and window frames, and for ornamental metalwork such as railings, trims, grilles, etc.
Brass is used extensively for finish hardware, plating of hardware, and other miscellaneous accessories such as screws, nuts, and bolts, anchors, etc.

Bronze

True bronze is an alloy of copper and tin, typically consisting of 90% copper and 10% tin composition.

Nickel

Nickel imparts its qualities of strength, hardness, toughness, ductility, corrosion resistance, and strength at high temperatures to the resulting material when alloyed with other metals.
Nickel is used as a protective or decorative coating for other metals, including aluminum, brass, copper, iron, magnesium, steel, tin, and zinc.

Lead

Lead is a blue-gray, soft, very heavy metal with good corrosion resistance, is easily recovered from scrap materials, and is relatively impenetrable to radiation.
The corrosion resistance of lead arises from the fact that metallic lead does not react with many compounds or solutions, and with certain others it forms compounds which act as protective coatings against further corrosion.

Methods of Joining Metals

Soldering

Soldering is a method to join metals, make electrical connections, and seal joints hermetically with another lower melting metal or alloy called the solder.
Soldered joints have very little tensile, shear, or impact strength; therefore, this method should not be used where a strong joint is required.
Solders are mostly alloys of tin and lead in various proportions with small percentages of other elements added to give special characteristics.
Tin-lead solder of the 50% tin, 50% lead variety is the most commonly used general-purpose solder.
Some tin-lead solders are used for coating the metals before soldering, known as pre-tinning.

Metals for Concrete Reinforcement

Steel Bars are used for concrete reinforcement.
Wire Fabric is used for concrete reinforcement.
Expanded Mesh is used for concrete reinforcement.
Laths are used for concrete reinforcement.

Description

Test your knowledge on different types of metals such as Aluminum, Iron, Steel, and various joining methods like Soldering, Brazing, Welding. Also, explore metals used in concrete reinforcement and storage methods for metal reinforcement.