RoHS (Restriction of Hazardous Substances) is an EU directive designed to protect the environment by regulating the use of potentially hazardous materials in electronic equipment.
The six restricted substances identified as potentially harmful include: lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr(VI)), polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE). For metal stamping and machining processes, RoHS compliance guarantees that all materials used in stamped component manufacturing are certified to be either completely free of these substances or contain only trace amounts that meet or fall below internationally recognized safety thresholds.
Key compliance aspects:
Material certification requirements
Maximum concentration values (MCVs):
0.1% by weight (1000 ppm) for most restricted substances
0.01% by weight (100 ppm) for cadmium
Supply chain documentation obligations
Testing and verification protocols
This regulatory framework is particularly critical for electronic components, automotive parts, and medical devices where metal-stamped products are extensively utilized. Manufacturers must maintain strict material controls and provide full documentation to demonstrate compliance throughout the product lifecycle.