Technical articles on surface treatment, corrosion testing, and fastener quality.
AI-server liquid-cooling components demand far higher surface cleanliness and corrosion resistance than standard parts. MAPT applies mature chemical polishing before passivation to help cooling tubes, manifolds, and fittings reach superior performance.
Read more →- Hydrogen embrittlement is delayed brittle fracture caused by atomic hydrogen absorbed into high-strength steel, often failing hours or days after tightening - Fasteners above ~32 HRC (roughly class 10.9) are the high-risk group; pickling and electroplating are the main hydrogen sources - Three keys to prevention: process control, baking within 4 hours after plating, and mechanical galvanizing as a hydrogen-free alternative
Read more →- Neutral salt spray (NSS) testing per ISO 9227 / ASTM B117 is the most common corrosion benchmark for plated fasteners - Results are judged in two stages: white rust (coating oxidation) and red rust (substrate corrosion) - Corrosion life varies enormously by process — from tens of hours for plain zinc to 2,000 hours for Zinc-Nickel
Read more →- Zinc-Nickel plating deposits a zinc alloy containing roughly 12-15% nickel, far outperforming standard zinc coatings - With trivalent chromium passivation it withstands 720+ hours of salt spray without red rust — up to 2,000 hours in high-spec processes - It is the go-to finish specified by global automakers for engine-bay and chassis fasteners
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