Occasional disappointments from metal due to pitting and you may crevice corrosion, be concerned rust breaking and you can fatigue was submitted, but way to obtain improved content including duplex stainless steel steels, and higher details about values choice for certain operating standards, provide choice where you can find troubles.
The 3 popular sizes from inside the marine apps are UNS S32304 (often called 2304), UNS S31803 (2205) and UNS S32750 (2507)* and of this type of the most used are S31803. Specific functions out-of S31803 become:
Thus, propeller shafts made of 316 are usually galvanically safe
- yield electricity double regarding 304 otherwise 316;
- a lot higher resistance to pitting and crevice rust when you look at the seawater than just 316; and you will
- twice the newest tiredness and you may corrosion fatigue fuel out of 316. «Duplex stainless steels consist of an effective microstructure around 50% austenite and you can fifty% ferrite cereals» weiterlesen