Injection Molding Cycle Time Calculator
Professional tool for calculating optimal molding cycle parameters
Select Material (Auto-fill parameters)
Mold Open/Close Time (T₀)
T₀ = 0.013 × x + 3.6
Clamping Force (x)
tons
Mold Open/Close Time
4.90 s
Injection Time (Tᵢ)
Tᵢ = 0.0085 × m + 0.5
Product Weight (m)
grams
Injection Time
0.93 s
Holding Pressure Time (Tₕ)
Tₕ = 0.6 × D² + 0.3 × D
Max Wall Thickness (D)
mm
Holding Pressure Time
3.00 s
Cooling Time (Tᶜ)
Tᶜ = D²/(α×π²) × ln[8/π² × (tᶜ-tₘ)/(tₓ-tₘ)]
Max Wall Thickness (D)
mm
Thermal Diffusivity (α)
mm²/s
Melt Temperature (tᶜ)
°C
Mold Temperature (tₘ)
°C
Heat Deflection Temp (tₓ)
°C
Cooling Time
7.39 s
Total Cycle Time
16.22seconds
Mold Open/Close
4.90s
Injection
0.93s
Holding
3.00s
Cooling
7.39s
Material Properties Reference
| Material | Code | HDT (°C) | α (mm²/s) | Melt Temp (°C) | Mold Temp (°C) |
|---|---|---|---|---|---|
| Acrylonitrile Butadiene Styrene | ABS | 85 | 0.080 | 180-260 | 20-70 |
| High Impact Polystyrene | HIPS | 85 | 0.080 | 180-260 | 20-70 |
| Polystyrene | PS | 85 | 0.080 | 180-260 | 40-70 |
| Polypropylene | PP | 85 | 0.065 | 160-300 | 20-55 |
| High Density Polyethylene | HDPE | 50 | 0.090 | 150-300 | 20-45 |
| Low Density Polyethylene | LDPE | 50 | 0.090 | 150-300 | 20-45 |
| Polymethyl Methacrylate (Acrylic) | PMMA | 90 | 0.075 | 180-260 | 40-70 |
| Polyoxymethylene | POM | 115 | 0.060 | 180-260 | 20-95 |
| Polyamide 6 (Nylon 6) | PA6 | 130 | 0.070 | 225-250 | 70-110 |
| Polyamide 66 (Nylon 66) | PA66 | 150 | 0.085 | 270-295 | 70-110 |
| Polybutylene Terephthalate | PBT | 150 | 0.090 | 230-260 | 80-120 |
| Polyethylene Terephthalate | PET | 150 | 0.090 | 260-290 | 80-120 |
| Polycarbonate | PC | 130 | 0.105 | 260-320 | 50-120 |
| PC-ABS Blend | PC-ABS | 110 | 0.095 | 230-270 | 50-80 |
