Germany 2.4858 is the full titanium stabilized austenitic chromium-nickel-iron alloy, and added copper and molybdenum. Germany 2.4858 is a universal engineering alloys, the oxidation and reduction conditions have acid and alkali metal corrosion. High nickel composition of the alloy with effective anti-stress corrosion cracking. In various media are very good corrosion resistance, such as sulfuric acid, phosphoric acid, nitric acid and organic acid, alkali metal such as sodium hydroxide, potassium hydroxide and hydrochloric acid. W.Nr.2.4858 higher overall performance in a variety of corrosive media in the nuclear burning dissolver, such as sulfuric acid, nitric acid and sodium hydroxide are handled in the same device.

 

Chemical composition:

Ni Ni :38-46

Chromium Cr :19.5-23 .5

Iron Fe: margin

Carbon C: ≤ 0.025

Manganese Mn: ≤ 1.0

Si Si: ≤ 0.5

Mo Mo :2.5-3 .5

Copper Cu :1.5-3 .0

Cobalt Co: ≤ 1.0

Aluminum Al: ≤ 0.2

Titanium Ti :0.6-1 .2

Features:

● good resistance to stress corrosion cracking

● good resistance to pitting and crevice corrosion

● good resistance to oxidation and thermal non-oxidizing acid can

● Up to 550 ℃ at room temperature and when they have good high temperature mechanical properties

● temperature of 450 ℃ with the manufacturing of pressure vessel certification