304 Stainless Steel CNC Machining

Upload your CAD files, receive a CNC milling price estimate promptly and get your parts into production efficiently.

The Significance of 304 Stainless Steel in CNC Machining:

The 304 stainless steel is an ideal choice for CNC machining due to its excellent machinability and resistance to corrosion, promoting the longevity of the finished parts. Additionally, it offers a good balance of strength and formability, making it suitable for various applications.

Among the vast family of stainless steels, 304 stainless steel holds a revered position. Known for its exceptional corrosion resistance and versatile applications, it’s a go-to material for engineers and designers in the realm of CNC machining.

Chemical and Physical Properties of 304 Stainless Steel: 304 stainless steel, often referred to as ‘A2 stainless steel’, is an austenitic grade. Its primary elements include:

  • Chromium: 18-20%
  • Nickel: 8-10.5%
  • Carbon: 0.08% max
  • Manganese: 2% max
  • Silicon: 1% max
  • Key physical properties include a density of 8 g/cm³, a melting point of 1400°C, and a tensile strength of 505 MPa.

Corrosion Resistance: The standout feature of 304 stainless steel is its remarkable resistance to corrosion. The chromium content allows the formation of a passive film of chromium oxide, protecting the material from oxidation. This makes it resistant to a variety of environments, from freshwater to atmospheric exposures.

Machinability and Weldability:

  • Machinability: 304 stainless steel offers good machinability, though it’s not as machinable as the free-machining variant, 303 stainless steel. Proper lubrication and sharp tooling can optimize its machining process in CNC operations.
  • Weldability: It exhibits excellent welding properties, making it suitable for a wide range of fabrication methods. Both fusion and resistance welding can be employed.

Applications in CNC Machining:

  • Food and Beverage Industry: Its non-reactive nature makes it ideal for equipment and appliances.
  • Construction and Building Materials: Used in railings, window frames, and other architectural elements.
  • Automotive Components: Especially those parts requiring corrosion resistance.
  • Medical Equipment: Owing to its biocompatibility.

Design Recommendations: For engineers looking to harness the full potential of 304 stainless steel, consider the following:

  • Recognize its strength and durability, making it suitable for load-bearing applications.
  • For aesthetic applications, it can be polished to achieve a mirror finish.
  • When joining, consider its excellent weldability, but also explore options like bolting or riveting for mechanical fastening.

304 stainless steel is more than just a material; it’s a testament to the balance between durability, workability, and beauty. Its unique blend of properties makes it a top choice for engineers and designers aiming for excellence in their CNC machined products.

For further insights on 304 stainless steel and its myriad applications in CNC machining, or to discuss your specific project requirements, reach out to our team of experts. We’re here to ensure your visions are realized with precision and quality.

303 Stainless Steel vs. 304 Stainless Steel

Property/Characteristic 303 Stainless Steel 304 Stainless Steel
Main Alloying Elements Chromium: 17-19%, Nickel: 8-10%, Sulfur: 0.15% min Chromium: 18-20%, Nickel: 8-10.5%
Machinability Excellent due to added sulfur Good, but not as machinable as 303
Corrosion Resistance
Good, but slightly less than 304 due to sulfur content Excellent, especially in oxidizing environments
Weldability Fair; not as weldable as 304 due to sulfur content Excellent; can be welded using most standard methods
Common Applications Precision components, gears, bearings, custom fasteners Food and beverage equipment, construction materials, automotive components, medical equipment
Cost Typically slightly less expensive than 304 Generally more expensive due to its higher nickel content and better corrosion resistance
Finish Can be polished, but not as shiny as 304 Can achieve a mirror finish with polishing

Stay Updated with Our Latest

Keep the momentum of learning going! Here are some of our latest articles that complement what you’ve just read.

  • CNC Machining Steel Parts

CNC Machining Steel Parts

July 13th, 2022|0 Comments

CNC Machining Steel Parts. Steel is a commonly used CNC machining material, which is harder than aluminum and is suitable for parts that require robustness. Our commonly used steels are 45# steel, 40Cr steel, and [...]

  • Stainless Steel CNC Turning Parts

Stainless Steel CNC Turning Parts

October 26th, 2021|0 Comments

Stainless Steel CNC Turning Parts. We specialized in CNC machining services, CNC turning and CNC milling services. Precision CNC machined parts made from turned or milled plastic and metal components. We offer the wide range of CNC machining parts and we [...]

  • Stainless Steel Turned Parts

Stainless Steel Turned Parts

June 13th, 2021|0 Comments

Stainless Steel Turned Parts. DFM Rapid is your CNC Rapid Machining Prototype shop with instant quotes. Our CNC machines can handle small radius cuts and maintain a high-quality level whether you want one piece or one [...]

  • Stainless Steel CNC Machining Services

Stainless Steel CNC Machining Services

May 8th, 2019|0 Comments

Stainless Steel CNC Machining Services. CNC Production Machining. We specialized in CNC machining services, CNC turning and CNC milling services. Precision CNC machined parts made from turned or milled plastic and metal components. We offer [...]

  • Stainless steel CNC milling services shop - cncrapid.com

Stainless steel CNC milling services

August 28th, 2018|0 Comments

Stainless steel CNC milling services. Stainless steel machined parts. Stainless steel CNC machining services China. We specialize in production machining services, engineering and using the latest technology to keep your prices low, without affecting quality. Throughout the years [...]