Title: Solderless Connections – Part 2: Crimped Connections – General Requirements, Test Methods, and Practical Guidance
Measured using 4-wire Kelvin method. Difference from a reference length of wire (voltage drop method). Minimum pull-out force (N) = function of wire cross-section (mm²) and strand class. iec 60352-2 pdf
This part of IEC 60352 specifies requirements for solderless crimped connections made with stranded wires (0.05 mm² to 10 mm² or 30 AWG to 8 AWG) and appropriate crimp contacts (terminals, splices, or closed barrels). It applies to manufacturing processes, test methods, and quality assurance for electrical and mechanical performance. 1. Introduction & Purpose Crimping is a widely used alternative to soldering in electronics, automotive, aerospace, and industrial control. IEC 60352-2 ensures that crimped connections are reliable , repeatable , and mechanically stable without heat or added filler metals. This part of IEC 60352 specifies requirements for
Latest active version (as of this report): IEC 60352-2:2020 RLV (Redline version) – supersedes earlier editions (2006, 1990). Introduction & Purpose Crimping is a widely used
| Conductor cross-section (mm²) | Minimum pull-out force (N) – Class 2 (flexible) | |-------------------------------|--------------------------------------------------| | 0.05 | 5 | | 0.14 | 10 | | 0.25 | 20 | | 0.5 | 40 | | 1.0 | 70 | | 2.5 | 150 | | 4.0 | 210 | | 6.0 | 280 | | 10.0 | 420 |
For Class 5/6 (fine strands), force may be reduced by ~20% if specified.