Steel CNC Machining Service
Get high-precision, accurate, CNC machined steel parts with complex geometries with our exceptional CNC machining service. Request an instant quote on our online platform.
Steel
High strength-to-weight ratio, magnetic properties, requires coating for rust prevention.
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Price:$0
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Lead Time:< 10 days
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Wall Thickness:0.75 mm
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Tolerances:±0.005″ (±0.125mm)
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Max Part Size:200 cm x 80 cm x 100 cm
Carbon Steel Q195
A low-carbon mild steel with 0.06-0.12% carbon content, featuring excellent ductility and weldability but limited strength.
Suitable Processes: Cold forming, bending, welding (all methods), stamping.
Applications: Wire products, nails, fencing, and light structural frames.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel Q215
Mild structural steel with 0.09-0.15% carbon, offering improved strength over Q195 while retaining good formability.
Suitable Processes: Hot rolling, welding, shearing, riveting.
Applications: Rebar, pipes, sheet metal components, and agricultural equipment.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel Q235
China's most common structural steel (0.12-0.20% C) with balanced strength and plasticity, equivalent to ASTM A36.
Suitable Processes: Hot rolling, forging, arc welding, machining.
Applications: Building frameworks, bridges, truck chassis, and machinery bases.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel Q255
Medium-carbon structural steel (0.18-0.28% C) with higher yield strength than Q235 but reduced weldability.
Suitable Processes: Hot working, limited welding (preheat required), machining.
Applications: Axles, couplings, and stressed mechanical parts.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel Q275
High-strength carbon steel (0.28-0.38% C) requiring controlled processing due to carbon sensitivity.
Suitable Processes: Hot forging, normalizing, precision machining.
Applications: Gears, shafts, and high-load structural components.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel 08F
Ultra-low-carbon steel (≤0.05% C) with superior deep-drawing characteristics for precision forming.
Suitable Processes: Cold stamping, deep drawing, spinning.
Applications: Automotive body panels, fuel tanks, and electrical appliance casings.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon Steel 10F
Free-cutting variant of 10-carbon steel with added sulfur/phosphorus for enhanced machinability.
Suitable Processes: Turning, drilling, automatic screw machining.
Applications: Fasteners, bushings, and mass-produced small precision parts.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon 20 Steel
Low-carbon engineering steel (0.17-0.23% C) offering optimal balance between machinability and case-hardening potential.
Suitable Processes: Carburizing, cold heading, CNC machining.
Applications: Camshafts, pins, and surface-hardened wear components.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon 45 Steel
Medium-carbon workhorse steel (0.42-0.50% C) widely used for quench-tempering heat treatment.
Suitable Processes: Quenching & tempering, induction hardening, grinding.
Applications: Crankshafts, bolts, and high-strength mechanical linkages
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon 40Cr Steel
Chromium-alloyed steel (0.37-0.44% C + 0.8-1.1% Cr) with enhanced hardenability over plain carbon steels.
Suitable Processes: Oil quenching, tempering, thread rolling.
Applications: High-stress bolts, hydraulic press columns, and gear shafts.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon 35CrMo Steel
Chromium-molybdenum alloy steel (0.32-0.40% C) for high-temperature strength and fatigue resistance.
Suitable Processes: Vacuum heat treatment, precision forging, shot peening.
Applications: Aircraft landing gear, turbine shafts, and high-pressure fittings.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Carbon 42CrMo Steel
Premium alloy steel (0.38-0.45% C + Cr-Mo) delivering exceptional toughness under extreme loads.
Suitable Processes: Ultrasonic testing, isothermal quenching, finish grinding.
Applications: Drill collars, military vehicle axles, and heavy-duty gears.
Material Selection Tip: The Q-series steels prioritize weldability/formability, while numbered grades (e.g., 45#) focus on mechanical performance. Alloy steels (Cr/Mo) excel in fatigue-critical applications.
| Tensile Strength, Yield (MPa) | Fatigue Strength (MPa) | Elongation at Break (%) | VHardness (Brinell) | Density (g/cm³) |
|---|---|---|---|---|
Surface Finishing Options for Brass
Brass CNC turned parts can undergo various surface finishing processes to enhance their appearance, durability, and performance.
- As Machined
- Electroplating
- Passivation
- Powder Coating
Surface Finishes We Offer
Since magnesium parts are prone to machining defects and formation of burrs, it’s important to treat them with the right surface finishes.
This will improve their aesthetic appeal and enhance performance and longevity. At RapidDirect, we offer an extensive range of surface finishing options tailored to your requirements,
ensuring optimal protection and visual quality for your magnesium parts.
This will improve their aesthetic appeal and enhance performance and longevity. At RapidDirect, we offer an extensive range of surface finishing options tailored to your requirements,
ensuring optimal protection and visual quality for your magnesium parts.
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As MachinedDescription: Standard finish with surface roughness of 3.2 μm (126 μin), removes sharp edges and deburrs parts cleanly. Key Use: Functional parts requiring no post-processing (e.g., brackets, gears). Process Tolerance: Dimensional ±0.1 mm, Ra 3.2±0.5 μm Process Specifications: ISO 2768-m standard, burr height ≤0.05 mm
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ElectroplatingDescription: Electrochemical metal coating (e.g., chrome, zinc) for durability. Process Compatibility: Post-machining electrodeposition Key Use: Automotive trim, jewelry. Process Tolerance: Coating thickness 5-25 μm±2 μm, adhesion ≥4B (ASTM B571) Process Specifications: Current density 1-10 A/dm², bath temp. 40-60℃
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PassivationDescription: Acid treatment to remove free iron and enhance corrosion resistance. Process Compatibility: Post-cleaning chemical immersion Key Use: Surgical tools, food processing equipment. Process Tolerance: Film thickness 0.001-0.01 μm, salt spray ≥96 hrs Process Specifications: Nitric acid 20-50%, process time 20-60 min
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Powder CoatingDescription: Electrostatic polymer powder cured into durable film. Process Compatibility: Post-cleaning spray and bake Key Use: Outdoor furniture, automotive wheels. Process Tolerance: Coating thickness 60-120 μm±10 μm, ΔE≤1.0 Process Specifications: Voltage 30-90 kV, cure 180-200℃×15 min
Pros
- High Strength and Durability: Steel is renowned for its high tensile strength and durability, making it suitable for heavy-duty applications.
- Versatility: It is available in various grades and can be alloyed with other elements to enhance specific properties.
- Good Machinability: Many steel alloys are relatively easy to machine, allowing for precision and efficiency in manufacturing.
- Cost-Effectiveness: Steel is generally more affordable than other high-strength materials, making it a cost-effective choice for many applications.
- Heat Resistance: It can withstand high temperatures, making it ideal for heat and high-stress applications.
Cons
- Corrosion Susceptibility: Steel can be prone to corrosion unless treated or alloyed with other elements.
- Density: Steel is denser and heavier than many other materials, which might be a drawback for applications requiring lightweight components.
- Tool Wear: Machining steel, especially harder alloys, can cause significant tool wear, necessitating frequent maintenance and replacement.
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