Materials · CNC machining
Stainless steel for parts that have to resist corrosion and carry load. 303, 304/304L, 316/316L, 17-4PH and 410/420, milled and turned to your drawing on 3-, 4- and 5-axis equipment, inspected in-house, AS9100D certified.
Stainless is the grade family we reach for when a part has to survive moisture, chemicals or repeated cleaning and still hold tolerance. It work-hardens as you cut it, so we manage speeds, feeds and tool paths carefully to keep the surface clean and the dimensions stable. Send a drawing and you get a line-item quote in 48 hours, one prototype or a production batch, with no minimum order.
Grades
| Grade | Type | Why you pick it | Parts |
|---|---|---|---|
| 303 | Free-machining austenitic | Among the easiest stainless to machine, fast cycles, good finish | Shafts, fittings, fasteners, turned parts |
| 201 | Economical austenitic | Lower-nickel austenitic, higher strength than 304, good value | Hardware, fittings, brackets, structural parts |
| 304 / 304L | General austenitic | The all-rounder: corrosion resistant, weldable, economical | Brackets, housings, plates, hardware |
| 316 / 316L | Marine austenitic | Higher corrosion resistance, handles chlorides and acids | Marine, food, lab and process components |
| 17-4PH | Precipitation-hardening | High strength, heat-treatable, holds an edge under load | High-load fittings, valve parts, shafts |
| 410 / 420 | Hardenable martensitic | Hardens by heat treatment, good wear resistance | Cutlery-type parts, wear surfaces, tooling |
| 416 | Free-machining martensitic | Best machinability in stainless, hardenable by heat treatment | Shafts, fasteners, valve and pump parts, turned parts |
These are the stainless grades we run most often. We also machine other grades on request.
Capability
As-machined, bead blast, brushed, and passivation. Passivation is the key one for stainless: it removes free iron and restores the corrosion-resistant surface, which matters for marine, food and components for medical and lab equipment.
See the Finish LibraryComponents for medical and lab equipment, food and beverage equipment, marine hardware, oil and gas, and commercial aerospace.
Industries we serveWhy Fenva
AS9100D, ISO 9001 and IATF 16949, not just ISO 9001.
No minimum order. The same drawing and the same inspection from one piece to a full batch.
We machine strictly to your drawing and take full responsibility for the result.
Mini-FAQ
A chemical process that removes free iron from the surface and restores the natural corrosion-resistant layer. We arrange it in-house and recommend it for marine, food and lab-equipment parts.
304 is the economical all-rounder. Choose 316 when the part sees salt water, chlorides or acids, since it resists corrosion better.
Down to ±0.01 mm on critical features.
Prototypes about 10 to 15 business days, production about 15 to 30, quote in 48 hours.
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Upload your drawings for review and our engineering team will quote within 48 hours, no minimum order.
An NDA is available on request.