Carbon & Alloy Steel CNC Machining Services

Precision CNC machining for 1018, 1045, 4140, 4340, and 8620 steel parts, with heat treatment, surface finishing, and inspection options.
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CNC machined carbon and alloy steel parts including flange, shaft, housing, and mechanical components
COMMON CARBON & ALLOY STEEL GRADES

Carbon & Alloy Steel Grades We Machine

We machine common carbon and alloy steel grades for precision parts, prototypes, and production applications.

1018 Carbon Steel

1018 carbon steel offers good machinability, weldability, and cost efficiency, making it suitable for general-purpose precision components.
Typical Applications
• Shafts
• Pins
• Bushings
• Mounting Components
• General Mechanical Parts
1018 carbon steel CNC machined shafts, pins, bushings, and mounting components

1045 Carbon Steel

1045 carbon steel provides higher strength and hardness than low-carbon steels while maintaining good machinability for mechanical components.
Typical Applications
• Shafts
• Gears
• Axles
• Machine Components
• High-Load Mechanical Parts
1045 carbon steel CNC machined gear, shaft, flange, and mechanical components

4140 Alloy Steel

4140 alloy steel combines high strength, toughness, and wear resistance, making it well suited for demanding precision-machined components.
Typical Applications
• Gears
• Shafts
• Tooling Components
• Fixtures
• High-Stress Mechanical Parts
4140 alloy steel CNC machined gear shaft, housing, flange, and high-strength components

4340 Alloy Steel

4340 alloy steel offers excellent strength, toughness, and fatigue resistance for highly loaded and demanding mechanical applications.
Typical Applications
• High-Strength Shafts
• Aerospace Components
• Heavy-Duty Fasteners
• Structural Components
• High-Load Machine Parts
4340 alloy steel CNC machined shaft, yoke, fastener, and high-load mechanical components

8620 Alloy Steel

8620 alloy steel provides good toughness, machinability, and case-hardening capability, making it suitable for wear-resistant mechanical components.
Typical Applications
• Gears
• Bushings
• Pins
• Transmission Components
• Wear-Resistant Parts
8620 alloy steel CNC machined gear, shaft, bushing, and wear-resistant components
GRADE COMPARISON

1018 vs 4140

Compare two commonly used steel grades for CNC machining and mechanical applications.

1018 Carbon Steel

Better machinability
Lower cost
Good weldability
Ideal for general-purpose components
VS

4140 Alloy Steel

Higher strength
Better wear resistance after heat treatment
Better fatigue resistance
Ideal for high-load applications
Not sure which steel grade is right for your part? Our engineering team can help.
CARBON & ALLOY STEEL APPLICATIONS

Carbon & Alloy Steel Parts & Finishes

Carbon and alloy steels are widely used for precision components requiring high strength, wear resistance, toughness, and reliable performance under demanding loads.
Carbon and alloy steel CNC machined parts with black oxide, zinc plating, nickel plating, and as-machined finishes

Typical Carbon & Alloy Steel Parts

Shafts & Axles
Gears & Sprockets
Fixtures & Tooling
High-Load Components

Available Finishes

Black Oxide
Zinc Plating
Nickel Plating
As-Machined

Ready to Start Your Carbon & Alloy Steel CNC Machining Project?

Send us your drawings and requirements for an engineering review and quote.
FAQ

Frequently Asked Questions

Find quick answers about carbon and alloy steel CNC machining, material grades, finishes, and production requirements.

We commonly machine 1018, 1045, 4140, 4340, and 8620 steel, with other grades available based on project requirements.

1018 offers good machinability, weldability, and lower cost, while 4140 provides higher strength and fatigue resistance, with improved hardness and wear resistance after heat treatment.

Yes. Many carbon and alloy steels can be heat treated after machining to improve hardness, strength, and wear resistance depending on the material grade and application.

Typical CNC machining tolerances are ±0.01 mm, with tighter tolerances down to ±0.005 mm available for selected critical features depending on part geometry, size, material grade, and inspection requirements.

Yes. Material certificates can be provided upon request. Please specify any certification or traceability requirements when requesting a quote.

Available finishes include black oxide, zinc plating, nickel plating, and as-machined finishes depending on your requirements.