Alpine skis — Ski binding screws — Test methods
1Key Takeaways
This document specifies test methods for screws used for fastening ski bindings to alpine skis. NOTE 1 Acceptance criteria are specified in ISO 6004. The results of these test methods characterize the properties of the binding screw. NOTE 2 A test method for the mounting and fastening characteristics of different ski m…
2Expert Interpretation
A comprehensive interpretation of the ISO 6005:2019 3rd edition test standard for alpine ski fixing screws, including professional technical specifications and implementation points for core methods such as breaking torque, ductility, driving torque, peeling torque and static pull-off test.
Standard Technology Evolution and Background
ISO 6005:2019 is the core standard for the safety of alpine skiing equipment, and its predecessor can be traced back to the second edition in 1991. This revision mainly updates the specification requirements of test fixtures and adjusts the reference standard for the mechanical properties test of stainless steel screws to ISO 3506-4. This standard, together with ISO 6004 (requirement standard) and ISO 8364 (installation area test), constitutes a complete evaluation system for ski fixing systems.
Comparison of key test methods
| Test items | Test components | Core parameters | Equipment requirements |
|---|---|---|---|
| Breaking torque | Not applicable | According to ISO 3506-4/2702 | Torque tester |
| Driving torque | Type M (7-layer structure) | 8±0.2mm penetration depth | Drilling fixture (Ra=0.8μm) |
| Peeling torque | P type (5-layer structure) | 6±0.2mm penetration depth | 135HB hardness friction plate |
| Static pulling | P type component | 8±0.5mm penetration depth | 30mm diameter support roller |
Test component preparation specifications
The standard requires that the test component must simulate the real snowboard laminate structure:
- Core layer: 20mm thick polyurethane foam (ρ=0.5±0.05g/cm³)
- Reinforcement layer: 0.8mm glass fiber epoxy resin (55% longitudinal fiber orientation)
- Metal layer: 1mm thick Al-Zn6MgCu aluminum alloy (tensile strength ≥600N/mm²)
The bonding process needs to be cured at 100℃/700kPa for 15 minutes and aged for 1 month before use.
Implementation points and common problems
- Drilling accuracy control: 4.1H12(+0.12/0)mm hole diameter requires the use of hardened steel drill sleeves to ensure verticality
- In the ductility test, it is necessary to ensure that the screw thread is exposed for at least 2 full pitches
- During the torque test, record data every half turn and prohibit lubricants
- The pull-off test loading rate is strictly controlled at 20mm/min
Essential elements of the test report
According to the requirements of Chapter 6, the report must include:
- Screw manufacturer information and model
- Maximum stripping torque (N·m)
- Maximum pull-out strength (N)
- Test date