PP (Polypropylene) Material Properties
Mechanical Properties
- Good fatigue resistance
- Moderate tensile strength: 25-35 MPa
- Excellent chemical resistance
- Good impact strength
- Low density
- Good flex life
PP (Polypropylene) Thermal Properties
- Heat deflection temperature: 50-60°C
- Maximum continuous use temperature: 100°C
- Good thermal fatigue resistance
- Low thermal conductivity
PP (Polypropylene) Processing Properties
- Excellent processability
- Low processing temperature: 200-250°C
- Good flow characteristics
- Easy to color
- Weldable and bondable
- Low mold shrinkage (1.0-2.5%)
PP (Polypropylene) Parts Manufacturing Processes
Injection Molding
ExcellentAdvantages
- High production efficiency
- Good flow properties
- Cost-effective
- Wide processing window
Key Parameters
melt temperature: 200-250°C
mold temperature: 20-60°C
injection pressure: 30-80 MPa
CNC Machining
ModerateAdvantages
- Good for prototypes
- No tooling costs
- Quick turnaround
- Design flexibility
Key Parameters
cutting speed: 200-300 m/min
feed rate: 0.1-0.3 mm/rev
tool type: Standard carbide tools
3D Printing
GoodAdvantages
- Easy to print
- Good layer adhesion
- Low warpage
- Cost-effective
Key Parameters
nozzle temperature: 210-250°C
bed temperature: 60-80°C
layer height: 0.1-0.3mm
PP (Polypropylene) Technical Specifications
density
0.90-0.91 g/cm³
water absorption
<0.01%
tensile strength
25-35 MPa
flexural modulus
1100-1500 MPa
impact strength
20-100 J/m
heat deflection
50-60°C
mold shrinkage
1.0-2.5%
melting point
160-170°C
Processing Guidelines
molding temperature
200-250°C
mold temperature
20-60°C
drying conditions
Not typically required
injection pressure
30-80 MPa
recommended thickness
0.8-4.0 mm
PP (Polypropylene) Parts Industry Applications
Automotive
- Battery cases
- Bumper covers
- Interior trim
- Fluid reservoirs
Packaging
- Food containers
- Bottle caps
- Storage bins
- Protective packaging
Consumer Products
- Kitchen utensils
- Garden furniture
- Toys
- Storage containers