Stainless Steel Machining Service
Produce stainless steel with CNC Machining can achieve excellent precision, durability, and corrosion resistance.
Erye's Stainless Steel Machining Service
Stainless steel is widely used in many industries because of its strength, versatility, and resistance to staining, rust, and oxidation. Erye provides full-service stainless steel CNC machining to assist you in manufacturing components that can operate reliably in the demanding environment. Our capabilities include:
- CNC Milling & Turning: Full in-house capabilities for complex and round parts.
- Fast Prototyping: Quick turnaround to validate your design.
- Tight Tolerances: Controlled within ±0.01mm, verified by CMM inspection.
- Fast Turnaround: Prototypes shipped in 3–5 business days.
- Free DFM Report: Fast, no-cost manufacturability feedback.
What is Stainless Steel in CNC Machining
Stainless steel is a chromium-containing steel alloy, with the added chromium forming a thin, self-repairing layer on the surface that gives it its resistance to rust and staining. Compared to aluminum or brass, it’s tougher and more heat-resistant, which makes it harder to cut and shape, machining it needs rigid setups, sharp tooling, and carefully controlled cutting speeds to hold tight tolerances without excess heat buildup or work hardening.
Common Stainless Steel Grades We Machine
The stainless steel grade you choose affects corrosion resistance and strength.
The followings are the grades we machine most often:
| Grade | Best Known For | Good Fit For |
|---|---|---|
| 304 | Excellent all-around corrosion resistance; the most widely used stainless grade | Food equipment, medical parts, enclosures, brackets, general industrial hardware |
| 303 | Excellent toughness, but lower corrosion resistance than 304 | Fittings, fasteners, shafts, and parts with tight tolerances or complex features |
| 316 | The second most used stainless steel after 304 | Marine hardware, chemical processing equipment, medical implants and surgical tools |
| 400 Series (410/416/420) | Magnetic and heat treatable with higher strength | Valve components, shafts, cutting tools, wear-resistant parts |
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Stainless steel is specified when your CNCÂ machined part needs to be used for a long time without getting damaged. Because it has the following advantages:
Long-term corrosion resistance
Resists rust and oxidation even in wet, humid, or chemically exposed environments, reducing the need for coatings or maintenance.
Hygienic and easy to clean
Smooth, non-porous surface can resists bacterial growth, making it widely used in food, medical, and pharmaceutical equipment.
Heat resistance
Maintains strength and shape at high temperatures, making it suitable for parts near heat sources or in sterilization processes.
High strength and durability
Performs better under mechanical stress, repeated use, and impact than aluminum or brass.
Stainless Steel Machining Part Finishes We Offer
In addition to CNC machining, Erye provides a range of surface finishes to match your stainless steel parts to the appearance and protection level your application requires
Stainless Steel Machining Services For Your Industry
The stainless steel components we produce are applied in the following industries:
Related FAQs of Stainless Steel Machining
Why does stainless steel cost more to machine than aluminum?
Stainless steel cuts slower and wears down tooling faster than aluminum, which increases machining time and tool replacement costs. This is reflected in the per-part price, even though material cost differences are smaller.
Is 400 series stainless steel magnetic?
Yes. 400 series grades (410, 416, 420) are magnetic due to their martensitic structure, unlike 303, 304, and 316, which are non-magnetic austenitic grades.
Does stainless steel need passivation, or is it optional?
Passivation is not required for every part, but it is strongly recommended for medical, food-contact, or high-corrosion-resistance applications, since machining can leave trace iron particles on the surface that reduce corrosion resistance if not removed.
What's the difference between 303 and 304 stainless steel, and which should I choose?
303 machines faster and achieves tighter tolerances more easily due to added sulfur, but has slightly lower corrosion resistance than 304. If your part is purely functional and not exposed to harsh environments, 303 is usually the more cost-effective choice; for food, medical, or outdoor applications, 304 is the safer pick.
Ready to Start Your Stainless Steel Machining Program?
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