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440C CNC Machining Service

Order custom 440C CNC machined parts from RapidDirect, with high accuracy, corrosion resistance, and fast production.

  • Fast turnaround for prototypes and production
  • Stainless steel grades for demanding parts
  • Custom surface finishes and post-processing
CNC machined Stainless Steel part 1
CNC machined Stainless Steel part 1

440C in CNC Machining

440C is a high-carbon martensitic stainless steel known for strength, hardness, and wear resistance. Heat treatment can further increase hardness. It is used for bearing housings, surgical instruments, and components with demanding wear requirements.

  • High hardness: 440C delivers high hardness for demanding parts.
  • Wear resistant: Its wear resistance suits bearing and tooling components.
  • Heat treatable: Heat treatment can further increase hardness.

Selection note: Stainless steel offers excellent corrosion resistance, strength, and easy cleaning. RapidDirect provides as-machined, electroplated, passivated, powder-coated, polished, and brushed surfaces.

Compare other Stainless Steel grades

440C Capabilities

Price$$$
Lead timeUnder 10 days
Wall thickness0.75 mm
Tolerances±0.005 in (±0.125 mm)
Maximum part size2000 × 800 × 1000 mm
Available grades440C
Explore our 440C CNC Machining services

440C Stainless Steel Material Specifications

Mechanical Properties

Tensile strength, yield450–1900 MPa
Fatigue strength275 MPa
Elongation at break10–20 %
Hardness285–600 Brinell

Physical Properties

Density7.75 g/cm³

440C Stainless Steel Manufacturing Facilities

440C FAQs

Learn about 440C applications, capabilities, and finishing options.

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