EN 1303:2015 Digit 8: Attack Resistance Grade D 10-Min Drilling & 15 kN Pulling
Engineering Overview: Engineering breakdown of EN 1303:2015 Digit 8 Grade D physical attack resistance, testing drilling, pulling, chisel, and plug extraction.
Technical & Engineering Specifications
| Rating Tier | Grade D (Maximum Attack Resistance) |
|---|---|
| Chisel Torque | 30 N.m Impact Twisting Resistance |
| Drilling Time | 10 Minutes Continuous High-Speed Attack |
| Pulling Force | 15 kN (1,500 kg) Axial Pulling Resistance |
| Standard Reference | EN 1303:2015 Section 4.9 (Digit 8) |
The Highest Physical Attack Tier
In EN 1303:2015, Digit 8 (Attack Resistance) evaluates physical burglary resistance across 5 tiers (0, A, B, C, D).
Grade D Testing Criteria
- Drilling Resistance: Withstands 10 minutes of continuous high-speed cobalt drill attacks.
- Chisel & Hammer Impact: Withstands 30–40 blows from hardened steel chisels and 30 N·m twisting torque.
- Axial Tensile Pulling: Resists 15 kN (1,500 kg force) direct plug pulling without core extraction.
Frequently Asked Engineering & Selection Questions
Q1: What tools are used in EN 1303 Grade D attack testing?
High-speed cobalt drills, carbide hole saws, mechanical plug extractors, and hardened steel chisels applied under laboratory test conditions.