cnc machined machining part of PP

I. PP Description

PP looks like PE, but PP is more transparent, lighter. PP is flammable. PP own low water absorption, low gas permeability. PP has good mechanical properties, the tensile strength and yielding strength are better than PE, PS and ABS. PP resists stress cracking and easy to weld, but low notched impact strength, the finished parts shall avoid sharp corners and notches. The temperature ranges between +5℃ and 100℃.

II. PP Characteristics:

1. Low density  

2. Resistance to bending fatigue

3. Good heat resistance

4. High tensile strength

5. High surface strength

6. High chemical resistance

7. Food safe

Disadvantages:

1. Low oxidation resistance

2. Low abrasion resistance

3. Easy to brittle at low temperature

4. HF-welding not possible

5. Difficult to varnish and glue

6. No weather resistance

III. PP Applications

1. Pipeline, medical equipment , stewing endurance tableware, food packaging,

2. Galvanize tank, acid-proof and alkali resistance containers, spraying loading frame.

3. Home appliances shell, wire and cable etc.