40 mm L60 & L70
Single base seven perforated cylindrical grain contains Nitrocellulose (NC), Diphenylamine (DPA) and additives. It is used in 40mm L60 Bofors gun. ● Single base one perforated cylindrical grain contains Nitrocellulose (NC), Diphenylamine (DPA) and additives. It is used in 40mm L70 ammunition (for Bofors 40mm naval gun or similar guns).
TECHNICAL SPECIFICATIONS
Type | L60 | L70 |
Length (mm) | 5 ± 0.3 | 6 ± 1 |
Diameter (mm) | 2.6 ± 0.2 | 1.8 ± 0.2 |
Hole diameter (mm) | 0.2 ± 0.05 | 0.25 ± 0.1 |
Web thickness (mm) | 0.5 ± 0.1 | 0.8 ± 0.15 |
Diphenylamine(%) | 1-2 | 1-2 |
Graphite (%) | ≤ 0.4 | ≤ 0.4 |
Moisture & Volatiles (%) | 0.4-2 | 0.4-2 |
Heat of explosion (cal/gr) | ≤ 800 | ≤ 900 |
Stability at 134.5 °C (min) | ≥ 40 | ≥ 40 |
BALLISTIC SPECIFICATIONS
Type | L60 | L70 |
Total charge (gr) | ~ 380 | ~ 450 |
Average Velocity (m/s) | 860 ± 10 | 1000 ± 5 |
Std. dev. of Velocity (m/s) | ≤ 7 | ≤ 8 |
Average Pressure at +21°C (bar) | ≤ 2900 | ≤ 4030 |
Max. Pressure at +63°C (bar) | ≤ 3400 | ≤ 4500 |
| Attachment | Size |
|---|---|
| chapter 1-5_15.pdf | 1.44 MB |
