Product brief introduction
Duplex stainless steel.
22% chromium duplex steel (austenitic/ferrite) (2205), with a moderate to high strength and good corrosion resistance to common/stress, corrosion cracking ability.
This alloy has the tolerance ability to resist chloride and sulfide stress corrosion environment, the intensity is about twice the standard strength of austenitic stainless steel.
Demand a higher mechanical strength /
Lighter weight, the alloy could be successfully used as a substitute 300 series austenitic stainless steel.
F51 many standard welding arc welding equipment is easy to use,
B but not recommended for oxygen welding, because there may be carbonization phenomenon in weld metal.
Product Parameter
F51的化学成分:
Alloy % | Ni | Cr | FE | Mu |
N | Cu | Mn | S |
S |
P |
Small | 4.5 | 21 | Remain | 2.5 | 0.08 | |||||
Big | 6.5 | 23 | 3.5 | 0.2 | 0.03 | 2 | 1 | 0.02 | 0.03 |
Technical Equipment
F51 application scope of application areas are:
Typical applications include oil and gas, chemical, electric power and brewing widely used pump, valve, flange and pipe system.

