# data[].attributes.attachment_link.title
Stainless Steel - General Information - St St Introduction

# data[].attributes.attachment_link.readable_text
Plastics have numerous properties that make them superior to other materials in many applications. Plastics generally have: resistance to corrosion and chemicals, low electrical and thermal conductivity, high strength-to-weight ratio, colors available in a wide variety and transparent, resistance to shock, good durability, low cost, are easy to manufacture, resistant to water and have low toxicity.

Types of Plastic Materials

Plastic materials include: polypropylene (PP), polystyrene (PS), high impact polystyrene (HIPS), acrylonitrile butadiene styrene (ABS), polyethylene terephthalate (PET), polyester (PES), polyamides (PA) (Nylons), poly(vinyl chloride) (PVC), polyurethane (PU), ,polycarbonate (PC) and polyethylene (PE).

The name Plastic is derived from the Greek word plastikos, which means able to be shaped. Plastic materials consist of long chain molecules (polymers). Available in many colors and in transparent form, plastics can be rubbery or rigid. Plastic shapes include sheet, rod, hex, pipe, cubes, balls, tubes, etc.

Machining

eMachineShop manufactures plastic parts using: Counter boring, Counter sinking, Drilling, Milling, Reaming, Shearing, Threading & Tapping, Turning (lathe), Waterjet Cutting, Injection Molding and Rapid Prototyping (FDM).

Applications

Plastics are one of the most common materials in countless products and applications including: appliances, auto interior panels, side shields, fender liners, head liners, bottles, CD and cassette boxes, cutlery, displays, disposable cups, electrical connectors, electronic enclosures, eyeglasses, food packaging, fridge liners, ID cards, instrument panels, jars, lenses, microwavable packaging, name tags, outdoor signs, packaging, pallets, pipes, plates, seat backs, security shields, shutters, trays, window frames, windows and windshields.

How to Proceed

We can quote your job using conventional CAD files or you can download our unique free CAD software where you can: design your part quickly and easily, get instant pricing, and order online.

# data[].attributes.attachment_link.title
Properties of Plastic | Machining Plastic | eMachineShop.com

# data[].attributes.attachment_link.description
Plastics have numerous properties that make them superior to other materials in many applications. Plastics generally have: resistance to corrosion and chemicals, low electrical and thermal conductivity, high strength-to-weight ratio, colors available in a wide variety and transparent, resistance to shock, good durability, low cost, are easy to manufacture, resistant to water and have low toxicity.

# data[].attributes.attachment_link.readable_text
Today I am going to tell you main difference between hot working and cold working. They both are the metal forming processes. When plastic deformation of metal is carried out at temperature above the recrystallization temperature the process, the process is known as hot working. If this deformation is done below the recrystallization temperature the process is known as cold working. There are many other differences between these processes which are described as below.

Difference between Hot Working and Cold Working:

Cold working required more energy for plastic deformation.

It requires less energy for plastic deformation because at higher temperature metal become more ductile and soft.

It does not require pickling because no oxidation of metal takes place.

Heavy oxidation occurs during hot working so pickling is required to remove oxide.

Embrittlement does not occur in cold working due to no reaction with oxygen at lower temperature.

There is chance of embrittlement by oxygen in hot working hence metal working is done at inert atmosphere for reactive metals.

These are the main difference between hot working and cold working. If you have any query regarding this article, ask by commenting. If you like this article, don't forget to share it on social network. Subscribe our website for more informative articles. Thanks for reading it.

# data[].attributes.attachment_link.title
Difference between Hot Working and Cold Working - mech4study

# data[].attributes.attachment_link.description
Today I am going to tell you main difference between hot working and cold working. They both are the metal forming processes. When plastic deformation of metal is carried out at temperature above the recrystallization temperature the process, the process is known as hot working.

# data[].attributes.attachment_link.description
This site provides a wealth of technology information sheets for pupils and teachers

# data[].attributes.attachment_link.readable_text
Ductility vs Brittleness

Ductility and brittleness are two of the most important physical properties of materials in construction engineering. Ductility of a material is its ability to deform when a tensile force is applied upon it. It is also referred to as the ability of a substance to withstand plastic deformation without undergoing rupture. Brittleness, on the other hand is exactly an opposite property of ductility as it is the ability of a material to break without first undergoing any kind of deformation upon application of force. There are many who cannot understand the differences between ductility and brittleness and this article is meant to explain the differences between these two important properties of substances.

We experience these properties of materials in our daily lives. We say that our nails are very brittle as they snap easily. Women are especially seen disturbed by the brittleness of their nails and hair and try out treatments to improve plasticity of their important assets. In physics, materials that elongate or deform up to 5% are said to be ductile and some examples of ductile materials are gold, silver, and copper. On the other hand, brittle materials give way and snap without any notice and do no undergo any deformation. Some good examples are cast iron and concrete.

One can think of ductile materials as bendable and crushable. Have you seen how ductile a rubber band is as you can stretch it long enough before it finally snaps as it cannot bear the tensile force you are applying? On the other hand, the potato chip or a biscuit that you eat is extremely brittle as it cannot withstand the slightest of forces. Therefore it is prudent to say that if a material is not ductile, it is brittle. In construction industry, if we have to choose between two materials having same hardness and strength, we go for one that has higher ductility as it will be more long lasting. Ductility is a property that is affected by temperature. Increase in temperature is seen to increase ductility and a decrease in temperature reduces ductility and can even change a substance from being ductile into a brittle material.

Impurities also tend to make a material brittle. So if a brittle material is what is required addition of impurities is resorted to, to make a material more brittle. Most of the glasses and ceramic material are extremely brittle. This is why scientists try to increase the hardness and strength of such materials to prevent their breaking easily. Fracture is perhaps the most important concept in the field of material science and engineering. It is defined as the ability of a material to break into pieces when an external force is applied upon it.

In brief: Difference Between Ductility and Brittleness

* Ductility is the ability of a material to withstand tensile force when it is applied upon it as it undergoes plastic deformation

* Brittleness is the opposite of ductility as it refers to the ability of materials to break into pieces upon application of tensile force without any elongation or plastic deformation

* Glasses and ceramics are considered brittle whereas gold and silver are ductile materials.

* Ductility allows wires to be drawn of materials

* Increase in temperature increases ductility while addition of impurities decreases ductility

# data[].attributes.attachment_link.title
Difference Between Ductility and Brittleness - DifferenceBetween.com

# data[].attributes.attachment_link.description
Ductility vs Brittleness Ductility and brittleness are two of the most important physical properties of materials in construction engineering. Ductility of a material is its ability to deform when a tensile force is applied upon it. It is also referred to as the ability of a substance to withstand plastic deformation without undergoing rupture.

# data[].attributes.body
Hot and cold work is needed because they result in different properties and can meet certain standards for the job being performed. For example hot working makes it easier to form and reform a material such as steel and can make it easier to draw steal into a wire.

# data[].attributes.body
It increases mechanical properties.

In hot working, ultimate tensile strength, yield point, corrosion resistance are unaffected.

# data[].attributes.body
Cold working increases ultimate tensile strength, yield point hardness and fatigue strength but decreases resistance to corrosion.

Cold working decreases mechanical properties of metal like elongation, reduction of area and impact values.

# data[].attributes.body
Cold working usually results in a higher yield strength and a stronger material.

# data[].attributes.body
Hot working is done at a temperature above recrystallization temperature.

# data[].attributes.body
It is done at a temperature below the recrystallization temperature.

# data[].attributes.body
Ceramics have high strength and high fracture resistants but they are still very brittle materials. This means they cannot stretch or be reformed they can only crack.

They are also very hard  materials. An example would be glass.

# data[].attributes.body
Cast Iron is ductile so it can be drawn into wire easily. It is also a very tough material meaning it  can resist great force without breaking.

It is also an elastic material so it can return to its original shape after being deformed.

# data[].attributes.body
Stainless steel has a high ductility meaning it can be stretched into wire easily.

Stainless steel is very popular because it can be molded into different flat shapes and it is resistant to corrosion so it won't rust.

# data[].attributes.body
Plastic is a malleable material meaning it can be molded into different shapes multiple times this is why plastic is so common.

Plastic is very easy to work and shape.

# data[].attributes.body
The ability of a material to be reshaped in all directions without breaking.

# data[].attributes.body
The ability of a material to stretch without breaking or snapping.

# data[].attributes.body
Gold and Silver are ductile materials while glass and ceramic are more brittle materials.

# data[].attributes.body
Is the opposite of ductility. The ability of materials to break into pieces among the application of tensile force.

# data[].attributes.body
The ability of a material to withstand tensile force and be drawn into a wire.