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405 Stainless Steel

Penn Stainless inventory includes Alloy 405 (UNS S40500) in plate.  Other product forms maybe available upon request.

 

General Properties

Alloy 405 is a 12% chromium stainless steel designed to be used in the as-welded condition. Unlike the other grades of 12% chromium stainless, 405 is not vulnerable to extensive hardening through air cooling from high temperatures.

Specifications: UNS S40500

Applications:

Applications that frequently use alloy 405 include, but are not limited to:

  • Steam nozzles
  • Partitions
  • Annealing boxes
  • Quenching racks
  • Fabrications that cannot be annealed after welding

 

Standards:

  • ASTM/ASME: UNS S40500
  • EURONORM: FeMi35Cr20Cu4Mo2
  • DIN: 2.4660

Corrosion Resistance

  • Same corrosion resistance of Type 410 Steel
  • Used in situations where more weldability is desired than Type 410

Machinability

  • Type 405 can be easily machined due to its soft and ductile characteristics

 Weldability

  • Can be welded using shielded fusion and resistance techniques
  • Oxyacetylene is not recommended
  • Post weld annealing will maximize ductility

Chemical Properties:

C Cr Fe Mn Si S P Ni Al
405 0.08 max

min: 11.5
max: 14.5

balance

1.0
max

1.0
max
0.03
max

0.04
max

0.50
max

min: 0.1
max: 0.3

Mechanical Properties:

Grade Tensile Strength ksi (MPa) min Yield Strength 0.2% offset ksi (MPa) min Elongation (% in 50mm) min Hardness (Brinell) MAX Hardness (Rockwell B) MAX
405

60
(415)

25
(170)

20

179

88


Physical Properties:

Denstiy
lbm/in3
Coefficient of
Thermal Expansion (min/in)-°F
Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1832°F at 200°F at 32 – 212°F in tension (E)
0.279 9.2 20.5 416 0.11 28 x 106

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