Stainless Steel CNC Machining Services
Get high-quality custom stainless steel parts with our professional online CNC machining services, and a delivery time of 3 working days.
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Certifications
ISO 9001:2015 | ISO 13485：2016 | IATF16949
CNC Machining for Stainless Steel Parts
Choose certified materials at factory prices with no minimum order required. Enjoy fast turnaround times for all your custom manufacturing needs. Quality and efficiency guaranteed!
| Description | Characteristics |
|---|---|
|
Tolerances |
±0.01 mm |
|
Maximum Part Size |
Milling: 4000 mm×1500 mm×600 mm |
|
Turning: 200 mm×500 mm |
|
|
Hole Diameters (Not Reamed) |
±0.02 mm |
|
Wall Thickness |
0.75 mm |
|
Standard Lead Time |
3 business days |
Stainless Steel CNC Machining Process
Provide 3-axis, 4-axis, 5-axis CNC milling and CNC turning for threaded and cylindrical stainless steel parts.
Precision CNC milling for stainless steel parts with exceptional strength, corrosion resistance, and high heat tolerance. Ideal for complex shapes and tight tolerances across industries.
High-precision CNC turning for stainless steel components, delivering durable, corrosion-resistant parts with excellent surface finishes for industrial and medical applications.
Stainless Steel CNC Machining Materials
We offer a wide range of material options for your stainless steel parts. If you have special material requirements, please contact us.
Stainless Steel 15-5
Precipitation-hardened steel offering excellent strength, toughness, and corrosion resistance, ideal for aerospace and nuclear applications.
- Tensile Strength: 1280 MPa
- Shear Modulus: 77 GPa
- Elongation at Break: 10%
- Hardness: 388 Brinell
- Post-Processing: Hot working, Age hardening, Annealing
Stainless Steel 17-4PH
Known for superior high-temperature corrosion resistance, used in chemical processing and gas turbines.
- Tensile Strength: 1379 MPa
- Shear Modulus: 77.4 GPa
- Elongation at Break: 7%
- Hardness: 419 Brinell
- Post-Processing: Not suitable
Stainless Steel 18-8
Offers good corrosion resistance, commonly used in fasteners and pressure piping.
- Tensile Strength: 215 MPa
- Shear Modulus: 77 GPa
- Elongation at Break: 70%
- Hardness: 123 Brinell
- Density: 0.286 lb/in³ (7.93 g/cm³)
Stainless Steel 303
Designed for easy machinability, suitable for gears and shafts, with reduced corrosion resistance.
- Tensile Strength: 240 MPa
- Shear Modulus: 77.2 GPa
- Elongation at Break: 50%
- Hardness (Brinell): 228
- Post-Processing: Not suitable
Stainless Steel 304
It’s a cost-effective alternative to SS316, with similar chrome and nickel content to grade 18-8 but enhanced strength due to a higher carbon level.
- Tensile Strength, Yield: 215 MPa
- Shear Modulus: 77 GPa
- Elongation at Break: 70%
- Hardness: 123 Brinell
- Post-Processing: Annealing & Cold working
Stainless Steel 316
Superior corrosion resistance, particularly in chloride-rich environments, used in chemical tanks and marine applications.
- Tensile Strength, Yield: 290 MPa
- Shear Modulus: 74 GPa
- Elongation at Break: 40%
- Hardness: 187 Brinell
- Post-Processing: Annealing & Cold working
Stainless Steel 416
Stainless Steel 416 is highly machinable but less corrosion-resistant. It’s available in an annealed condition and can be heat-treated for enhanced strength.
- Tensile Strength: 275 MPa
- Shear Modulus: 83 GPa
- Elongation at Break: 30%
- Post-Processing: Cold & hot working, Annealing, Tempering, Hardening
Stainless Steel 420
Martensitic steel with high mechanical strength, often used for surgical instruments and cutting tools.
- Tensile Strength, Yield: 345 MPa
- Shear Modulus: 80.7 GPa
- Elongation at Break: 25%
- Hardness: 195 Brinell
- Corrosion Resistance: Moderate
- Post-Processing: Annealing
Stainless Steel 440C
With the highest carbon content among the 400 series, Stainless Steel 440C provides exceptional hardness and mechanical strength.
- Tensile Strength: 445 MPa
- Shear Modulus: 83.9 GPa
- Elongation at Break: 14%
- Post-Processing: Cold and hot working, Annealing, Tempering, Hardening
Stainless Steel 410
General-purpose stainless steel with good corrosion resistance, used in cutlery and fasteners.
- Tensile Strength, Yield: 290 MPa
- Shear Modulus: 73 GPa
- Elongation at Break: 25%
- Hardness: 147 Brinell
- Density: 7.74 g/cm³
Stainless Steel 301
Similar to SS304, Stainless Steel 301 offers good corrosion resistance and is used in applications where higher strength and formability are required, such as in springs and foils.
- Yield Strength: 200 - 230 MPa
- Elongation at Break: 35 - 46 %
- Thermal Conductivity: 16 - 16.3 W/(m⋅°C)
- Corrosion Resistance: Excellent
- Post-Processing: Cold working, Annealing
Stainless Steel 430
Stainless Steel 430 is a cost-effective, corrosion-resistant ferritic steel used in kitchen appliances, automotive trim, and heating elements.
- Yield Strength: 200 - 280 MPa
- Elongation at Break: 20 - 24 %
- Thermal Conductivity: 26.1 - 26.3 W/(m⋅°C)
- Corrosion Resistance: Good
- Post-Processing: Cold & hot working, Annealing
Why Use BOYI Stainless Steel CNC Machining Service
No MOQ
From single stainless steel prototypes to large-scale production runs, we handle orders of any size with equal efficiency.
High Precision
Our expert engineers deliver parts with tight tolerances, meeting the highest aerospace and medical standards.
Fast & Competitive
Hundreds of advanced machines enable quick turnaround and industry-leading pricing for your projects.
Custom Finishes
We provide a wide range of high-quality coatings and finishes tailored to meet your specific project requirements.
Cost Efficiency & Expert Support
With streamlined production, we help reduce costs by 30-40% while offering expert design and material optimization.
Quality & Material Options
ISO 9001:2015 certified, we ensure top-tier quality with diverse material options and comprehensive certification reports.
What is Stainless Steel?
Renowned for its exceptional strength, high tensile properties, and outstanding resistance to corrosion and extreme temperatures, stainless steel is engineered for durability and reliability. Its alloys combine superior strength and ductility with excellent wear and corrosion resistance, making them ideal for demanding environments. Moreover, stainless steel is highly adaptable—it can be easily welded, machined, and polished to meet diverse application needs, offering both functionality and aesthetic appeal in one robust material.
Stainless Steel Applications
Stainless steel CNC machining offers high precision and versatility, making it suitable for a wide range of applications across various industries. Here are some key applications:
- Surgical instruments
- Orthopedic implants
- Dental tools
- Aircraft engine components
- Structural parts
- Fasteners
- Exhaust systems
- Engine components
Key Advantages
Here’s a concise list of advantages of stainless steel CNC machining:
- Achieves tight tolerances and complex geometries.
- Strong, wear-resistant components.
- Ideal for harsh environments.
- Variety of finishes (smooth, matte, brushed).
- Fast, automated production with consistent quality.
- Reduced waste and tool longevity.
- Works with various stainless steel grades.
- Near-net shape parts with little extra work.
- Parts fit perfectly for assembly.
