Milling Stainless Steel CNC Parts CNC Custom Machining Part CNC Lathe
Machining Service
Stainless steel is known for its exceptional properties, including high tensile strength, resistance
to corrosion and extreme temperatures. Stainless steel alloys exhibit remarkable strength,
ductility, and resistance to wear and corrosion. They are well-suited for welding, machining,
and polishing processes.
Product Details
Stainless Steel Finishing and Post-Processing
| Name | Machining Marks |
| Brushed + electropolishing | Removed on Primary surfaces |
| Electroless nickel plating | Reduced but visible |
| As machined | Visible, light surface scratches |
| Smooth machining | Visible, light surface scratches |
| Fine machining | Slightly visible |
| Polishing | Removed on primary surfaces |
| Bead blasting | Removed for non-cosmetic, removed on primary surfaces for cosmetic |
| Brushing | Reduced for non-cosmetic, removed on primary surfaces for cosmetic |
| Powder coating | Removed |
| Black oxide | Visible |
Stainless Steel Machining Services
Our state-of-the-art machine shops are equipped to manufacture tailor-made stainless steel
components utilizing CNC turning machines and 3- and 5-axis CNC milling machines.
Our facilities boast a diverse range of 11 stainless steel types, including Stainless Steel 304,
Stainless Steel 316, Stainless Steel 303, Stainless Steel 17-4PH, Stainless Steel 416,
Stainless Steel 2205 Duplex, Stainless Steel 420, Stainless Steel 440C, Stainless Steel 430,
Stainless Steel 301, and Stainless Steel 15-5, enabling us to meet a wide array of project
requirements.
| 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. |
CNC Machining Applications
Parts and products produced through CNC machining find application in many industries, including,
but not limited to, the following:
Industrial, Transportation & Vehicle, Medical, Consumer
Company Profile
FAQ's
1. How Much Does CNC Machining Cost?
The cost of CNC machining a part is contingent on several factors, including:
1. Material: Different materials come with varying costs. Machining materials like Inconel are
pricier due to increased tool wear and slower cutting speeds compared to more economical
options like aluminum.
2. Complexity: Parts with intricate features incur higher machining costs. Complex surface
shapes, for example, contribute to increased expenses compared to simpler, flat surfaces.
3. Tolerances: Tight dimensional tolerance requirements contribute to elevated costs.
Needlessly specifying tight tolerances on non-critical features can increase CNC machining
expenses without added value.
4. Surface Finish: Achieving mirror finishes requires specialized tooling and strategies,
extending machining time and, subsequently, increasing costs.
5. Quantity: Low-volume production is inherently costlier per part due to the spreading of
initial setup and programming costs over a smaller quantity. Large-volume production offers
cost advantages as these setup costs are distributed over more parts.
2. Tolerance Specifications for Machined Parts
Our tolerances for machined parts are outlined below:
Local tolerances of +.005”/- .005” are applied across most geometries in metals,
while plastics have a tolerance variation of +/- 0.010". Tolerance specifications may vary for
large parts, especially concerning flatness after heat treatment.
For CNC parts with an "As Milled" finish, a minimum surface finish of 125 is required.
Fabricated parts adhere to a dimensional tolerance of 0.010” and an angular tolerance of 1°.
Tapped holes not explicitly identified as features on the quoted CAD model may be machined to
the diameters specified in that model.
Surface treatments (e.g., anodize, bead blast, iridite, powder coat, etc.) will not be applied unless
specifically paid for and acknowledged.
3. Advantages of CNC Machining:
Rapid Prototyping: CNC machining excels in rapid prototyping, facilitating quick iterations and
testing of designs.
Efficient Production: The ability to produce full-scale production parts rapidly contributes to the
efficiency of CNC machining.
Precision and Accuracy: CNC machining ensures a high level of precision and accuracy in
manufacturing, meeting tight tolerances for CNC parts of varying sizes.
Tight Tolerance Machining: CNC machining allows for tight tolerance machining, ensuring
consistent adherence to exact specifications.
Flexibility: CNC machining offers flexibility across production volume, pricing, lead times,
and the choice of materials and finishes, providing a versatile solution for manufacturing needs.
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