Custom Precision CNC Steel Parts

±0.005 mm tolerances · High-strength steel machining · ISO9001 / IATF16949 / ISO13485 certified

1. No MOQ
2. Start as low as $10
3. Fastest 3 days delivery
4.7*24H free quotation and technical support

CNC Steel parts03

98%

Customers Satisfiction

1M+

Steel Parts Delivered

Steel CNC Machining Service Supplier in China

CMS provides fast, precise, and reliable CNC machining for carbon steel, alloy steel, and stainless steel parts. With advanced milling, turning, Swiss machining, and 5-axis capabilities, we produce high-strength, tight-tolerance steel components engineered for demanding applications. From prototypes to full-scale production, we ensure consistent quality, excellent surface finishes, and competitive pricing—no minimum order quantity required.

Start your CNC steel machining project today—upload your CAD files for an instant quote.

Steel
CNC Turning

Precision turning for shafts, bushings, pins, and threaded steel components with tight tolerances and stable dimensional accuracy.

Steel
CNC Milling

High-strength steel parts machined through 3–5 axis milling, ideal for complex geometries, brackets, housings, and mechanical structures.

Steel
SWISS Machining

High-speed Swiss turning for small, precise steel components such as pins, connectors, and high-volume micro-mechanical parts.

Steel
Surface Finishing

Heat treatment, black oxide, plating, grinding, polishing, and coating to improve hardness, wear resistance, and corrosion protection.

Cases of CNC Steel Parts

Anodized CNC Machining Parts2025-11-12T11:27:59+08:00
Anodized CNC Machining Parts
Aluminum CNC Machining Parts​2025-11-12T11:28:33+08:00
aluminum cnc machining parts​
Aluminum CNC Machined Parts​2025-11-12T11:28:28+08:00
aluminum cnc machined parts​
CNC Milling Machined Parts​2025-11-12T11:29:48+08:00
cnc milling machined parts​

Why Choose CMS for CNC Steel Machining?

Expertise Across Steel

From 1018/1045 and 4140/4340 to 303/304/316 and 17-4PH—optimized toolpaths and cutting parameters for every steel grade.

Advanced CNC Milling, Turning & Swiss Machining

3-axis, 4-axis, 5-axis, and Swiss-type machining to produce simple to highly complex steel components.

High Strength & Tight Tolerances

Stable machining processes achieving tolerances down to ±0.005 mm, ideal for mechanical and load-bearing parts.

Full Surface Finishing & Heat Treatment

Quenching, tempering, black oxide, nitriding, plating, and precision grinding available.

Strong Production Capacity

60+ CNC machines supporting rapid prototyping and high-volume production with short lead times.

ISO-Certified Quality System

CMM inspection · Material traceability · In-process QC · Final inspection reports.

Steel Materials We Work With

Steel Type Grades Application Notes
Carbon Steel 1018, 1045, 1095, 1144, 1215, Q235, 45# Cost-effective, good machinability, common for shafts, fixtures, brackets
Alloy Steel 4130, 4140, 4340, 1.7225 High strength, heat treatable, ideal for gears, structural and mechanical parts
Stainless Steel 303, 304, 316, 304L, 316L, 410, 416, 420, 17-4PH Corrosion-resistant, medical-grade options available
Tool Steels / Mold Steels A2, D2, S7, H13, M2, SKD11, S136, SKD61, NAK80, P20, S50C, S45C Wear resistance, high hardness, mold bases, cutting tools

 

Speak To Our Experts. Email infor@cnc machiningshops.com or Request A Quote

Features of CNC Machining Steel Parts

Steel has unique advantages that make it an excellent CNC machining material for different applications, precision parts can be produced with CNC Steel machining, ensuring high consistency and accurate specifications.

– Robust, high hardness, high yield strength
– cheap price
– easy to conduct electricity
– Wide range of applications and easy processing
– easy to solder

steel
CNC Machining 5 600x800

Our CNC Aluminum Machining Capabilities

Processes

  • CNC turning / turn-milling
  • CNC milling (3-axis, 4-axis, 5-axis)
  • Swiss turning for small precision steel parts
  • Drilling, tapping, threading
  • Precision grinding (optional)
  • Hard-material machining after heat treatment

Tolerance Standards

  • Standard: ±0.02 mm
  • Precision: ±0.005 mm
  • Roundness: ≤ 0.01 mm
  • Surface finish: Ra 0.4–1.6 μm

Surface Finishing Options for Steel

  • Heat Treatment: Hardening, tempering, annealing, normalizing
  • Carburizing / Nitriding / Induction Hardening
  • Black Oxide Coating
  • Zinc / Nickel / Chrome Plating
  • Grinding & Superfinishing
  • Polishing, brushing, bead blasting
CNC Turning 2 600x400

Application

Aluminum is widely used across industries for its excellent strength-to-weight ratio, corrosion resistance, and machinability. CMS produces high-precision aluminum components for:

Automotive manufacturing 600x400

Automotive

gears, shafts, brackets, suspension parts

industry_machinery_600x400

Industrial Machinery

fixtures, tooling, heavy-duty machine parts

Motion control axes, joint components, slide rail parts, mating parts

Robotics

precision shafts, couplings, mounting hardware

Lightweight structural components, connectors, bushings, high-strength alloy components

Areospace

structural components, landing gear fittings (4140/4340)

Surgical tools, precision shafts, instrument accessories, stainless steel/titanium parts

Medical

stainless steel surgical and instrument components

Shells, threaded components, small precision parts

Consumer Electronics

heat sinks, enclosures, covers, connector bodies

Frequently  Question

If you have any questions in the process of product design and manufacturing, you can contact us to obtain expert support and provide the best solution for your product. Get support now ！

We process carbon steel, alloy steel, stainless steel, and tool steels, including 1018, 1045, 4140, 4340, 303, 304, 316, 17-4PH, A2, D2, H13, and more.

Typical tolerances are ±0.01–0.02 mm, with precision features achievable down to ±0.005 mm depending on geometry and heat treatment.

Yes. We can CNC machine hardened steel and also provide heat treatment, quenching, tempering, nitriding, and induction hardening when needed.

The most machinable steel grades include 1215, 1144, 1018, and 303 stainless steel.

Yes. Available options include black oxide, zinc plating, nickel plating, chrome plating, polishing, grinding, bead blasting, and more.

Absolutely. With 60+ CNC machines, we handle rapid prototypes as well as high-volume steel machining with stable repeatability.

Heat-treated or high-strength steels may require specialized tooling and cutting parameters, but CMS uses optimized strategies to minimize distortion and maintain accuracy.

Common industries include automotive, industrial machinery, aerospace, robotics, oil & gas, and medical equipment.

Yes. We offer material certifications, hardness reports, CMM inspection, and full traceability.

Prototypes typically take 5–10 days, while production orders depend on volume and heat treatment requirements.

client
testimonials

Supplier was very helpful througout the whole process and very easy to communicate with, the end product turned out great with good anodizing quality and overall quality.

Edward Kinsjer

It All Starts With a consultation!

Aluminum Parts CNC Machining Service

For any kind of quiries, Please Email

info@cncmachiningshops.com

Room 902, Building 37, Gaoao New Village, Longhua District, Shenzhen City, Guangdong Province, China. 518100

+8617196430663