A nickel-phosphorus alloy that plates without electricity — every surface in the bath gets the same thickness, including the inside of holes and the back of recessed pockets. Mid-gray, satin, hard, used on aluminum molds, hydraulic valves, defense hardware. The conformal-coating workhorse.
Autocatalytic deposition: Ni²⁺ ions reduce on the part surface, hypophosphite donates electrons, every wetted surface plates uniformly (no current density variation). Phosphorus content tunable: low-P (2–5%) for hardness ≥600 HV after heat treat, high-P (10–13%) for corrosion resistance / non-magnetic. Thickness 5–50 µm typical. Conformal — coats blind holes and complex internal passages. Wears like a ceramic (~750 HV after 400 °C bake). The mold-tooling and food-equipment standard for aluminum substrates.
character — satin gray-white, dimensionally uniform, hard, neutral.
ASTM B488 / B456 / B689 plating standards; Powder Coating Institute and industry-association literature.
House vocabulary — terms ForMatter uses with intent.
Materials and processes for people who design and make things.
A local-first library of materials, processes, applications, and finishes — equal weight, citable everywhere, so a student can move from "what is this" toward "what's actually buildable here, now, by me." Part of the renato.design ecosystem — sibling of Plenum, Specimen, Ingenue, gesture, graf, and the Renato Rhino plug-ins. Form and matter, inseparable.
Half of teaching materials is teaching how the material is made into the thing. The standard subscription library was always light on that half. The wedge here isn't better samples or a prettier interface — it's treating Process as a peer entity, not a footnote.
Conway, Lefteri, Forty, Sparke, ASM, GIA. Every voice: Voices.
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