Dongguan Yexin Intelligent Technology Co., Ltd.
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Custom CNC Machining Part Stainless Steel Milling CNC Parts CNC Machine Parts
Stainless steel is an excellent choice for CNC machining due to its remarkable properties.
With high tensile strength, corrosion resistance, and tolerance to extreme temperatures,
stainless steel alloys offer exceptional durability. These materials are also known for their ductility,
making them suitable for various applications.
In addition, stainless steel can be easily welded, machined, and polished to achieve the desired finish.
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Stainless steel is highly resistant to corrosion and rust, making it suitable for situations
where a part may be exposed to the elements for a long period of time.
Stainless steel is also fairly malleable and ductile.
| Common Stainless Steel Materials | |
| No. | Properties |
| Stainless steel 304/304L | Stainless steel 304L (CNC) has excellent mechanical properties and good machinability. Resistant to most environments and corrosive media. |
| Stainless steel 316/316L | Stainless steel 316L (CNC) has similar mechanical properties to 304, with higher corrosion and chemical resistance. Ideal for marine applications. |
| Stainless steel 303 | Stainless steel 303 (CNC) has excellent toughness, but lower corrosion resistance than 304. Ideal for high volumes, due to its excellent machinability. |
| Stainless Steel 17-4 PH | Stainless steel 17-4 (CNC) - SAE grade 630 - is a precipitation hardening alloy with good corrosion resistance. Can be hardened up to 44 HRC. |
| Stainless steel 416 | Stainless steel 416 is magnetic and has a high machinability. |
| Stainless steel 2205 Duplex | Stainless steel 2205 Duplex (CNC) is the alloy with the highest strength and hardness. Suitable for applications in severe environments up to 300°C. |
| Stainless steel 420 | Stainless steel 420 provides high strength and corrosion resistance. It is the hardest of all stainless steels when hardened. |
| Stainless steel 440C | Stainless steel 440C has improved toughness and corrosion resistance due to Carbon and Chromium content. |
| Stainless steel 430 | Stainless steel 430 is magnetic and corrosion resistant. |
| Stainless steel 301 | Stainless steel 301 is corrosion resistant similar to Stainless steel 304. |
| Stainless steel 15-5 | Stainless steel 15-5 has a higher toughness than 17-4, better corrosion resistance and transverse properties compared to other similar martensitic grades. |
Stainless Steel Finishing and Post-Processing
The finish of stainless steel can vary significantly depending on the surface roughness.
However, it is typically described as shinier compared to unfinished aluminum alloys,
and it tends to have a slightly darker and more silver color.
Stainless steel offers flexibility in achieving various surface finishes, including options such as
media blasting, sanding, hand-polishing, and powder coating.
These processes can be employed to achieve a wide range of surface finish textures and
appearances.
| Name | Can be Applied with |
| Electropolishing | — |
| Electroless nickel plating | Media Blasting, Tumbling |
| Media Blasting | All post processes except Electropolish and Powdercoat |
| Nickel Plating | Media Blasting, Tumbling |
| Passivation | Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting |
| Tumbling | All post processes except Electropolish and Powdercoat |
| Zinc Plating | Media Blasting, Tumbling, Passivation |
| Powder coating | — |
| Black oxide | Media Blasting, Tumbling, Passivation |
CNC Machining Applications
CNC stainless steel parts produced by this type of machining are commonly found in the
automotive, aerospace, medical, marine, and hydraulic industries.
Such as headers, housings, shafts, shells, knobs, rotors, terminals, fittings, pistons, valve stems,
and similar products.
Company Profile
The Best Stainless Steel Grades for CNC Machining
When it comes to CNC machining, there are four primary stainless steel grades that stand out:
430F Stainless Steel: This grade is popular in machining industries due to its excellent feeds
and speeds.
It falls under the ferritic category and is similar to 430 stainless steel but contains increased sulfur
to enhance machinability.
300 Series Stainless Steel: Among the most widely used grades, 303 Stainless Steel is particularly
fast to machine.
It offers good corrosion resistance, making it suitable for various industrial machining parts like
screws, nuts, bolts, gears, and shafts. It is also easily modifiable.
Nitronic 60: This stainless steel grade boasts superior wear and corrosion resistance, making it a
versatile choice.
It has a yield strength almost double that of 304 stainless steel and exceptional oxidation
resistance.
Common applications include valve stems, fasteners, pins, seats, shafts, rings, bushings,
and bearings.
17-4 PH Stainless Steel: Renowned for its high corrosion resistance and strength,
17-4 PH Stainless Steel retains its durability even at high temperatures.
The "PH" in its name stands for "precipitation-hardened," signifying a treatment that increases
its yield strength. This grade is magnetic and can be heat-treated for added hardness.
Manufacturing and Supply of Stainless Steel Parts
Stainless steel stands as a favored alloy in various industries, including high-end precision
instruments, semiconductor manufacturing, and medical equipment production.
We specializes in manufacturing stainless steel parts known for their exceptional chemical
resistance, acid and alkali resistance, and corrosion resistance.
These parts find extensive applications in mechanical equipment, instrumentation measurement,
hydraulic control, and sensor equipment.
Our advanced turning and milling machines, along with surface treatment technology,
empower us to create stainless steel components with fine surface finishes and precise dimensions,
adhering to customer specifications.
In addition to corrosion resistance, stainless steel is weldable and is frequently employed in
vacuum components within highly corrosive gas and liquid processes, especially in semiconductor
applications.
For functional parts requiring superior corrosion resistance, we utilize SUS316/SUS316L stainless steel,
which includes added molybdenum for enhanced corrosion resistance.
This variety of stainless steel is commonly employed in chemical biotechnology, food-grade, and
medical-grade processes, where it consistently delivers outstanding quality and efficient performance.