Products

UNS S31803 - 1.4462

Wst. 1.4462

UNS S31803

Stock program: 6 – 25 mm OD / 1/4“ – 1” OD

Specification: ASTM A 789/ASME SA 789 / EN 10216-5/NACE MR0175/PED 97/23 EC / NORSOK M-650 MDS R18

Maximum expose temperature: 300°C / 560°F


Alloy 2205 is a duplex stainless steel with high general, localized and stress corrosion resistance properties, high strength and outstanding impact toughness. It was developed primarily to combat common corrosion problems. Duplex is superior to 316L or 317L austenitic stainless steels in most corrosive environments. The duplex alloy 2205 structure consists of austenite pools surrounded by continuous ferrite phases and contains approximately 45% ferrite. It is the most widely used grade in the duplex family of stainless steels.


Characteristics

  • High strength
  • Resistant to chloride stress corrosion cracking and temperatures up to about 150°C / 302°F
  • High resistance to chloride pitting and crevice corrosion
  • High resistance to stress corrosion crashing fatigue and erosion
  • Low thermal expansion and higher heat conductivity than austenitic steels

Market applications:

  • Chemical and Petrochemical industry
  • Oil and gas industry
  • Seawater desalination plants
  • Stream vessels
  • Food processing equipment
  • Pulp and paper industry

Technical details

Technical composition (%)
Fe
Cr
Ni
Mo
Mn
Si
P
N
C
S
31803 min
Bal.
21.0
4.5
2.5
-
-
-
0.08
-
-
  max
-
23.0
6.5
3.5
2.0
1.00
0.030
0.20
0.030
0.020
Mechanical properties
31803
Tensile strenght (mpa, min)
650 - 880
Yield strength (0.2% offset mpa, min)
450
Elongation (%, min)
25
Density / weight (g / cm3 / kg)
7.9

Ask us a question!

Contact form

Please enter your name

Invalid email address

Ungültige Eingabe

Please acknowledge Data privacy!

Invalid input