Stainless Steel CNC Machining Services

We offers custom CNC machining stainless steel parts with high precision and fast delivery. As a China stainless steel CNC machining factory, we work with many stainless steel grades like 303, 304, 316, 410, 416, and more.

Our precision machining services are great for parts made from 15-5, 17-4, 18-8, 420, and 440C, etc stainless steels. We support both small and large orders with stable quality and tight tolerances.

ODM and OEM Services
2-Hour Quotation
Material Test Certificate
ISO 9001 and IATF 16949

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Different Grades of Stainless Steel for CNC Machining

We offer a wide range of stainless steel CNC machining services tailored to different project needs. Our team of expert mechanical engineers has deep knowledge of various stainless steel grades commonly used in precision CNC machining services. Each grade offers unique strength, corrosion resistance, and machinability, making them suitable for diverse applications across industries.

Stainless Steel 15-5 Stainless Steel 17-4 Stainless Steel 18-8 Stainless Steel 303 Stainless Steel 304 Stainless Steel 316 Stainless Steel 416 Stainless Steel 420 Stainless Steel 440c Stainless Steel 410

Stainless Steel 15-5 CNC Machining

Properties: High strength, excellent toughness, good corrosion resistance, and strong mechanical properties after heat treatment.

Advantages: Provides a great combination of machinability and structural integrity. Ideal for parts requiring precision and high load capacity.

Applications: Aerospace structural components, valve parts, shafts, and fittings in high-pressure systems.

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Stainless Steel 17-4 CNC Machining

Properties: Precipitation-hardening alloy with high tensile strength and moderate corrosion resistance. Performs well under stress and heat.

Advantages: Strong, durable, and highly resistant to fatigue and corrosion. Can be heat-treated to a variety of hardness levels.

Applications: Medical devices, aircraft parts, marine equipment, and injection mold components.

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Stainless Steel 18-8 CNC Machining

Properties: 18% chromium and 8% nickel composition, good formability, non-magnetic, and general corrosion resistance.

Advantages: Economical choice for parts that don’t require extreme environments. Good weldability and decent strength.

Applications: Food processing machinery, kitchenware, bolts, and general-purpose industrial components.

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Stainless Steel 303 CNC Machining

Properties: Free-machining austenitic stainless steel with sulfur for enhanced machinability. Moderate corrosion resistance.

Advantages: Excellent machinability and surface finish. Ideal for high-speed CNC machining operations.

Applications: Shafts, screws, gears, bushings, and custom fasteners for general industrial use.

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Stainless Steel 304 CNC Machining

Properties: Non-magnetic, corrosion-resistant, excellent formability and weldability. Most widely used stainless steel.

Advantages: Balanced strength, corrosion resistance, and cost. Suitable for both decorative and functional applications.

Applications: Kitchen appliances, architectural panels, fluid handling components, and medical devices.

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Stainless Steel 316 CNC Machining

Properties: Contains molybdenum for enhanced chemical resistance, excellent weldability, and durability under saltwater exposure.

Advantages: Superior resistance to pitting, chemicals, and chlorides. Performs well in extreme and corrosive environments.

Applications: Marine parts, medical implants, laboratory equipment, and pharmaceutical processing equipment.

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Stainless Steel 416 CNC Machining

Properties: Martensitic stainless steel, high machinability, moderate corrosion resistance, and good hardness after heat treatment.

Advantages: Excellent for high-volume machining with reduced tool wear. Good dimensional stability.

Applications: Gears, axles, pump shafts, nuts, and automatic screw machine parts.

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Stainless Steel 420 CNC Machining

Properties: High-carbon steel with excellent hardness and polishability. Can be hardened through heat treatment.

Advantages: Sharp edge retention, high wear resistance, and good dimensional control.

Applications: Surgical instruments, cutlery, dies, molds, and valve parts.

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Stainless Steel 440c CNC Machining

Properties: Extremely high hardness and wear resistance, good dimensional stability, moderate corrosion resistance.

Advantages: Ideal for parts requiring high precision, edge sharpness, and extended lifespan under mechanical wear.

Applications: Bearings, cutting tools, valve seats, and precision mechanical parts.

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Stainless Steel 410 CNC Machining

Properties: Martensitic stainless steel with good strength, heat-treatable, and fair corrosion resistance.

Advantages: Cost-effective option for durable parts with moderate corrosion demands. Hardenable for increased toughness.

Applications: Machine components, screws, fasteners, pump parts, and hand tools.

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Our Stainless Steel CNC Machining Parts Standards

Our stainless steel CNC machining parts are made to high standards. The following standards are for your reference, but we can also customize parts to meet your specific requirements.

Tolerances：

±0.05mm

Max part size:

200 x 80 x 100 cm

Wall Thickness:

0.75 mm

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Why Choose VMT for Your Aluminum Machining Parter?

With 15 years of CNC machining expertise, VMT specializes in precision stainless steel machining with tolerances as tight as ±0.01mm, delivering exceptional accuracy and durability.

Our engineering team provides DFM analysis to refine designs and minimize costs, supported by a strict 12-step quality inspection process ensuring a 99.98% pass rate. We serve a wide range of industries with reliable performance, fast delivery, and competitive pricing.

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Stainless Steel Mechanical Properties

Stainless steel comes in various grades, each offering unique mechanical properties tailored to specific applications. The table below outlines the typical properties of commonly used stainless steel grades, making it easier to select the right material for your project based on strength, corrosion resistance, and machinability.

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (Brinell)	Key Features
304	505–735	215–310	40–60	170–200	Excellent corrosion resistance, good formability, widely used in kitchenware and construction.
316	515–750	205–300	35–55	160–190	Superior corrosion resistance, especially against chlorides, ideal for marine and chemical applications.
303	500–750	190–300	35–50	150–190	Excellent machinability, moderate corrosion resistance, used in precision parts and fasteners.
430	450–600	205–310	20–30	150–180	Good corrosion resistance and magnetic properties, commonly used in appliances and decorative trims.
410	480–680	240–420	15–25	180–230	High strength, wear resistance, moderate corrosion resistance, ideal for cutlery and tools.
420	540–700	275–400	12–20	180–230	Excellent hardness and polishability, often used in surgical tools and knives.
17-4PH	930–1170	725–1100	10–16	250–350	High strength and corrosion resistance, used in aerospace and chemical processing.
316L	490–680	170–300	40–60	150–190	Low carbon variant of 316 for better weldability and reduced risk of corrosion in welded structures.
2205	620–900	450–650	25–35	200–270	Duplex stainless steel with excellent strength and resistance to stress corrosion cracking, suitable for harsh environments.

CNC Machining Product Processed by Bead Blasting

Stainless Steel Finishes

1. Mill Finish
A smooth, matte finish achieved during the production process, ideal for industrial and functional uses where aesthetics are less critical but corrosion resistance is required.

2. Brushed Finish
This satin-like finish features fine, linear textures, making it a popular choice for modern, decorative applications like appliances, panels, and interiors.

3. Mirror Finish
A high-gloss, reflective surface created through polishing. Common in decorative and high-visibility applications such as signage, automotive trims, and design projects.

4. Bead-Blasted Finish
A matte, non-reflective surface created by blasting the steel with fine media. It’s often used in architectural elements and industrial designs for a clean and uniform appearance.

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Our Other Stainless Steel Machining Services

We specialize in a range of stainless steel machining capabilities, including CNC machining, rapid tooling, die casting, sheet metal fabrication, and 3D printing. These advanced services enable us to produce high-quality stainless steel components efficiently and with precision.

Sheet Metal Fabrication

We manufacture precise stainless steel parts like housings and brackets using laser cutting, bending, stamping, and welding, ensuring accuracy and versatility for various industries.

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3D Printing

We use advanced 3D printing technology to produce stainless steel components for automotive applications. This fast and flexible process is perfect for creating complex shapes with high precision.

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Forging

We provide stainless steel forging services to produce strong, precise parts like housings and support frames, ideal for high-volume industrial applications.

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See What Our Customers Say About Us

A customer’s words have a more substantial impact than a company’s claims – and see what our satisfied customers have said regarding how we fulfilled their requirements.

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Project Started Today

With a range of finishing services to choose from and guaranteed quality thanks to our inspection services you can trust you will receive great parts every time. Once you send us your 3D CAD file, one of our customer service engineers will check your design for manufacturability to ensure that the part can be made to your expectations and budget requirements. Contact us today for a free quote!

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Stainless Steel CNC Machining Services

Different Grades of Stainless Steel for CNC Machining

Stainless Steel 15-5 CNC Machining

Stainless Steel 17-4 CNC Machining

Stainless Steel 18-8 CNC Machining

Stainless Steel 303 CNC Machining

Stainless Steel 304 CNC Machining

Stainless Steel 316 CNC Machining

Stainless Steel 416 CNC Machining

Stainless Steel 420 CNC Machining

Stainless Steel 440c CNC Machining

Stainless Steel 410 CNC Machining

Our Stainless Steel CNC Machining Parts Standards