Stainless Steel CNC Machining

CNC Machining for Stainless Steel Parts

Stainless steel alloys have high strength, ductility, wear and corrosion resistance. They can be easily welded, machined and polished.

Choose from a wide selection of stainless steel materials for CNC machining in Dadesin.

Stainless Steel CNC Machining

Stainless steel is a type of metal alloy that is highly valued for its corrosion resistance, durability, and aesthetic appeal. It is widely used in various applications due to its ability to withstand harsh conditions, maintain structural integrity, and provide a polished and sleek finish. CNC machining processes allow for precise shaping and customization of stainless steel parts to meet specific design requirements and industry standards.

Dadesin deliveres precision results for a wide range of stainless steel alloys available for CNC machining. Our stainless steel CNC services enable you to create custom stainless steel parts for many applications across industries such as medical instruments, agricultural, industrial automation, machine parts, robotics and Vacuum and pressure vessels. We can produce complex stainless steel parts with 11 different types of stainless steel using our CNC turning machines and 3-axis and 5-axis CNC milling machines.

Why Choose Dadesin for Stainless Steel CNC Machining Services

Strict Quality Management

Our inspection instruments include German Zeiss CMM, Wanhao image measuring instrument, Hitachi handheld spectrometer, Mitutoyo roughness measuring instrument, etc.

Our Certification

Dadesin offers various tolerance options in accordance with ISO9001:2015 standard and even more tight as per your request.

fast Delivery

Dadesin has 200+ sets of high precision CNC machining centers and we can take your project from engineering design to delivery faster than our competitors.

The Perfect Finish

We offer high-quality finishing processes for most CNC Machined parts; from anodising, polishing and plating, to powder coating and more.

Stainless Steel Materials Properties

Precise mixtures of alloys in different stainless steel grades provide higher heat treatability and machinability, with unique properties to suit every application. Dadesin offers multiple stainless steel alloys to suit any specifications or requirements.

303 Stainless Steel
304L Stainless Steel
316L Stainless Steel
410 Stainless Steel
416 Stainless Steel
440C Stainless Steel
17-4PH Stainless Steel

303 Stainless Steel Properties

Stainless steel 303 (CNC) has excellent toughness, but lower corrosion resistance than 304. Ideal for high volumes, due to its excellent machinability.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
35,000 psi 42.5% Rockwell B95 0.29 lbs / cu. in. 2550° F

304L Stainless Steel Properties

Stainless steel 304L (CNC) has excellent mechanical properties and good machinability. Resistant to most environments and corrosive media.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
30,000 psi 50% Rockwell B80 (medium) 0.29 lbs / cu. in. 1500° F

316L Stainless Steel Properties

Stainless steel 316L (CNC) has similar mechanical properties to 304, with higher corrosion and chemical resistance. Ideal for marine applications.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
30,000 psi 39% Rockwell B95 0.29 lbs / cu. in. 1500° F

410 Stainless Steel Properties

Stainless steel 410 is the most general-purpose steel among the 400 series. It has a low carbon content that gives it improved corrosion resistance. 410 stainless steel is typically used for cutlery, fasteners, and machinery parts.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
65,000 psi 30% Rockwell B90 0.28 lbs / cu. in. 1200° F

416 Stainless Steel Properties

416 Stainless Steel is the most machinable grade of stainless steel. It is a low cost grade and can be used unhardened, hardened and highly tempered states.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
75,000 psi 22.5% Rockwell B80 0.28 lbs / cu. in. 1200° F

440C Stainless Steel Properties

Stainless steel 440C has the highest carbon content of the 400 series. It provides decent mechanical strength while being moderately corrosion-resistant. Widely used for bearing housings, surgical instruments, and other components that require increased hardness, wear resistance, and tensile strength.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
110,000 psi 8% Rockwell C20 0.28 lbs / cu. in. 800° F

17-4PH Stainless Steel Properties

Precipitation-hardened (PH) stainless steel is renowned for its strength and durability. It is more resistant to corrosion and has greater hardness and strength; ideal for use in high-temperatures, moist environments such as gas turbines, chemical processing plants, and industrial machinery.

Yield Strength (tensile) Elongation at Break Hardness Density Maximum Temp
160,000 psi 7% Rockwell C35 0.28 lbs / cu. in. 1100°F

Stainless Steel At a Glance

Application Used in the automotive, consumer goods, aerospace, and medical industries, primarily in applications that require exceptional corrosion resistance.
Strengths Good heat resistance, excellent corrosion resistance, high strength and toughness
Weaknesses Expensive; can be difficult to machine depending on alloy and heat treatment
Lead Time Minimum 3 days; longer for complex or internationally manufactured parts
Price $$-$$$
Tolerances ±0.125mm (±0.005″)
Wall Thickness Minimum 0.80 mm (~0.03”); may vary depending on alloy and wall thickness-to-planar dimension ratios.
Max part size 200 x 80 x 100 cm

Custom Stainless Steel Parts

Stainless steel impeller

Stainless steel impeller

Customized stainless steel flange

Customized stainless steel flange

Industrial machinery parts

Industrial machinery parts

stainless steel cnc machining parts

SS machining parts

stainless steel CNC machining part

Stainless steel CNC machining part


Finishes and Post-Processing Options

As machined (standard): This standard finish is the most basic and economical CNC finish, often used in applications where the surface won’t be visible, and appearance isn’t a priority.

Anodizing: Anodizing creates a protective oxidation layer on the surface of a part, usually through electrochemical processes. Anodized CNC machined parts can be dyed in different colors. This finish is often used for stainless steel parts that will be exposed to an outdoor environment, as the oxidation layer helps protect them from rust and corrosion.

Powder coating: Powder coating creates an excellent and robust surface finish. Stainless steel is corrosion resistant to a wide array of chemicals, but some, like chlorides, still pose a challenge. Powder coating can be used to improve its anti-corrosion properties in these situations.

Bead blasting: Bead-blasted CNC machining produces a matte finish with texture and evenness. The finish is achieved by blasting stainless steel with an abrasive media such as glass beads, aluminum oxide, or silicon carbide. Bead blasting creates a consistent look in end products with multiple parts machined from the same material.

Need CNC Machined Parts in Stainless Steel?

We focus on the processing of high-complexity and high-precision parts, with 200+ processing machines, the products can be produced as planned and delivery on time. We accept 3D CAD files in STL, STEP or IGES format, 2D drawings with reference dimensions in AI/CAD/PDF/JPG format.

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CNC Machining

Stainless Steel CNC Machining FAQs

  • What is stainless steel CNC machining?

    Stainless steel CNC machining refers to the process of using computer numerical control (CNC) machines to shape and fabricate stainless steel components. It involves the use of precision tools and computerized instructions to remove material from stainless steel workpieces, creating intricate and precise parts.

  • Which grades of stainless steel can be used in CNC machining?

    CNC machining can be performed on various grades of stainless steel, including austenitic (e.g., 304, 316), martensitic (e.g., 410, 420), ferritic (e.g., 430), and precipitation hardening (e.g., 17-4 PH) stainless steels. The choice of grade depends on the specific application requirements such as corrosion resistance, strength, and heat resistance.

  • How thin can you machine stainless steel?

    Thin walls require extra care when CNC machining stainless steel. The absolute minimum thickness is 0.5mm for metals. To minimize costs and machining time, it’s recommended to increase the thickness of thin walls to at least 0.8mm. Unless weight is a determining factor thicker walls are more stable and less costly. Thin features are susceptible to vibration, creating extra complexity and requiring considerably more time in machining operations.

  • How much does CNC stainless steel cost?

    The cost of CNC machining stainless steel depends on the complexity and size of the part and the type of stainless steel that is used. These variables will affect the type of machine that is required, the time it takes to produce the part, and the cost of the raw material. Contact us and get an instant cnc machining quote today.

  • What are some common applications of stainless steel CNC machining?

    Stainless steel CNC machining is widely used in numerous industries and applications. It is commonly employed in manufacturing parts for the aerospace, automotive, medical, and food processing industries. Some examples of parts produced through stainless steel CNC machining include valves, fittings, fasteners, surgical instruments, and components for industrial machinery.

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