High-Performance Alloy

Custom 4140 Steel Parts

High-Strength Chromium-Molybdenum Alloy Solutions

Expert manufacturing of custom 4140 steel (42CrMo4) parts with exceptional strength, toughness, and wear resistance for demanding applications in automotive, aerospace, and industrial sectors.

High strength and toughness
Excellent wear resistance
Superior machinability
Heat treatable alloy
4140 Steel Parts Manufacturing
4140 Steel Material Properties

4140 Steel (42CrMo4) Overview

Versatile Chromium-Molybdenum Alloy

4140 steel is a versatile chromium-molybdenum alloy steel that offers an excellent combination of strength, toughness, and wear resistance. Also known as 42CrMo4 in European standards, this alloy is widely used in applications requiring high mechanical properties and durability.

Medium carbon alloy steel

Chromium-molybdenum composition

Excellent heat treatability

Superior mechanical properties

Material Properties

Superior Mechanical Characteristics

Chemical Composition

Carbon (C)0.38-0.43%
Silicon (Si)0.15-0.35%
Manganese (Mn)0.75-1.00%
Phosphorus (P)≤0.035%
Sulfur (S)≤0.040%
Chromium (Cr)0.80-1.10%
Molybdenum (Mo)0.15-0.25%

4140 Steel (42CrMo4) Manufacturing Processes

Advanced Processing Techniques

Our state-of-the-art manufacturing capabilities ensure precise 4140 steel parts with consistent quality and performance.

CNC Machining

Precision computer-controlled machining for complex geometries and tight tolerances

  • Multi-axis machining
  • High-speed cutting
  • Advanced tooling
  • Quality control

Heat Treatment

Customized heat treatment processes to achieve desired mechanical properties

  • Quenching and tempering
  • Annealing
  • Normalizing
  • Stress relieving

Surface Finishing

Advanced surface treatment for enhanced performance and appearance

  • Grinding
  • Polishing
  • Coating
  • Nitriding

Applications

Versatile Industrial Solutions

4140 steel parts are used across various industries for their exceptional strength and durability.

Automotive

  • Gears and shafts
  • Crankshafts
  • Connecting rods
  • Suspension components

Aerospace

  • Landing gear components
  • Engine parts
  • Structural elements
  • Fasteners

Industrial

  • Machine tool components
  • Hydraulic cylinders
  • Pump parts
  • Valve bodies

Oil & Gas

  • Drilling equipment
  • Pipeline components
  • Valve parts
  • Tooling

Quality Assurance

Rigorous Testing Standards

Comprehensive quality control ensures every 4140 steel part meets the highest standards.

ISO 9001:2015 certified

Material certification

Dimensional inspection

Mechanical testing

Surface finish verification

Non-destructive testing

Why Choose 4140 Steel

Superior Performance Benefits

High Strength

Excellent tensile and yield strength for demanding applications

Toughness

Superior impact resistance and fracture toughness

Wear Resistance

Enhanced durability and extended service life

Machinability

Good machinability for efficient manufacturing processes

Heat Treatability

Versatile heat treatment options for property optimization

Cost Effective

Excellent value for high-performance applications

Frequently Asked Questions

Common Questions About 4140 Steel

Ready to Start Your 4140 Steel Project?

Get expert consultation and competitive quotes for your custom 4140 steel parts

Our team of experienced engineers and machinists is ready to help you bring your 4140 steel project to life with precision manufacturing and exceptional quality.

Free consultation
Quick turnaround
Quality guarantee
Competitive pricing

Partsproto

Professional CNC machining and custom parts manufacturing services, meeting your precision machining needs with rapid delivery of high-quality components.

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