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Cnc Machining 303 Stainless Steel


303 Stainless Steel is a type of austenitic stainless steel that belongs to the 300 series of stainless steels. It is also known as AISI 303 or UNS S30300. This alloy is a non-magnetic grade of stainless steel and is often used for its excellent machinability.

The composition of 303 stainless steel typically includes iron, chromium, and nickel as the primary elements. However, it also contains small amounts of sulfur and phosphorus, which improve its machinability but can reduce its corrosion resistance compared to other stainless steel grades.

Cnc Machining 303 Stainless Steel

303 stainless steel is well-known for its excellent machinability. Its 303 stainless steel can be machined at relatively high cutting speeds. It is important to maintain appropriate cutting speeds and feed rates to optimize machining efficiency. Consult the manufacturer’s recommendations or machining guidelines for specific values.After machining, 303 stainless steel may exhibit a slightly rough or dull surface finish. Depending on the application requirements, post-machining operations such as polishing, grinding, or passivation may be performed to improve the surface finish and enhance corrosion resistance.

Make Machined 303 Stainless Steel Parts With Be-cu


Our 303 Stainless Steel Machining process produces custom prototypes and end-use production parts in as fast as 1 day. We use 3-axis milling and 5-axis indexed milling processes to manufacture parts from 303 Stainless Steel Machining. With machined production parts, you can also get more competitive pricing at higher quantities in addition to first article inspection (FAI) reporting, material certifications, and additional finishing options like anodizing and chromate plating.Our experts have a deep knowledge of the CNC 303 Stainless Steel machining process. We offer various CNC machining services such as milling, turning, drilling, EDM, etc. In addition, our production processes are also ISO 9001 certified, and you can be assured of the best machined parts every time.

Make Machined 303 Stainless Steel Parts With Be-cu

Industries & Applications


303 is a free-cutting stainless steel containing sulfur and selenium respectively, and is used in occasions where easy cutting and high surface finish are mainly required. 303 stainless steel improves cutting performance and high temperature bonding performance.

  • Bolts and nuts
  • Gears
  • Screws
  • Shafts
  • Marine Parts
  • Connectors
  • Terminals
  • Aircraft components

303 Stainless Steel Machining Capabilities


  • Swiss Machining 303 Stainless Steel
  • CNC Milling 303 Stainless Steel
  • CNC Turning 303 Stainless Steel
  • 5 Axis Machining 303 Stainless Steel
  • CNC Cutting 303 Stainless Steel
  • Turn-Mill Machining 303 Stainless Steel

You can contact us by requesting a quote for any 303 Stainless Steel manufacturing process. One of our project managers will review your application and get a quote and DFM feedback for you within 12 business hours.

Why Choose Our 303 Stainless Steel Cnc Machining Service

Why Choose Our 303 Stainless Steel Cnc Machining Service?


  • Save time and money for your 303 Stainless Steel project but quality guaranteed.
  • High productivity, outstanding efficiency and high accuracy
  • A wide range of stainless steel grades and alloy materials can be machined
  • Custom complex stainless steel cnc machined parts and components at specific tolerances
  • High speed machining for prototyping and low to high volume production runs

Certifications & Quality Machining


  • ISO 9001:2015 certified
  • Fully compliant with the exacting requirements of our customers
  • Compliance in DFARS materials sourcing requirements
  • Strict compliance with PPAP and Process
  • FMEA for automotive customers
  • Skilled in KanBan and CMM Inspection and inventory management systems
  • ITAF 16949 certified
Cnc Machining Aluminum 1060

Stainless Steel Alloy 303 Machined Parts


The Chemical Composition Of Stainless Steel Alloy 303


  • C :≤0.15%
  • Si :≤1.00%
  • Mn :≤2.00%
  • P :≤0.20%
  • S :≥0.15%
  • Cr :17.00-19.00(%)
  • Ni :8.00-10.00(%)
  • Mo :≤0.6%

Mechanical Properties Of Stainless Steel Alloy 303


  • Tensile Strength σb (MPa): ≥520
  • Conditional yield strength σ0.2 (MPa): ≥205
  • Elongation δ5 (%): ≥40
  • Reduction of area ψ (%): ≥50
  • Hardness: HB≤187HB; HRC≤90HRB; HV≤200HV

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