Skip to content

431 CNC Machining Service

Order custom 431 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

431 in CNC Machining

431 is a high-chromium, low-nickel martensitic stainless steel known for high hardenability, strength, and good corrosion resistance. It is used in aerospace and marine applications.

  • High hardenability: 431 responds well to hardening for demanding components.
  • High strength: Its strength suits aerospace and marine parts.
  • Corrosion resistant: 431 provides good corrosion resistance for harsh service environments.

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

431 Capabilities

Price$$$
Lead timeUnder 10 days
Wall thickness0.75 mm
Tolerances±0.005 in (±0.125 mm)
Maximum part size2000 × 800 × 1000 mm
Available grades431
Explore our 431 CNC Machining services

431 Stainless Steel Material Specifications

Mechanical Properties

Tensile strength, yield690–900 MPa
Fatigue strength350 MPa
Elongation at break15–17 %
Hardness248–293 Brinell

Physical Properties

Density7.75 g/cm³

431 Stainless Steel Manufacturing Facilities

431 FAQs

Learn about 431 applications, capabilities, and finishing options.

Try RapidDirect
now, for free