Stainless Steel Capillary Tubes 904L Wst. 1.4539 UNS N08904:-

Specification: ASTM A 269/A 213/A 1016
                          ASME SB-677/NACE MR0175/PED 97/23 EC

Maximum service temperature: 450°C / 824°F 

904L is a low carbon high alloy austenitic stainless steel, with an chromium, nickel, molybdenum and copper content, which is widely used in applications where the corrosion properties of 316L & 317L are not adequate. although originally develop for greatly improved resistance to strong reducing acids, particularly sulphuric acid. It also has an very high resistance to a wide range of  environments. This feature has been verified that it is very successful after many years of practical applications, which has results that 904L has been standardized in many countries.

Characteristics:

• The high Mo and the addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly aspheric acid
• It is highly resistant to chloride attack, both pitting crevice corrosion and stress corrosion crashing
• Good machine ability and weld ability
• The austenitic structure also gives this grade excellent  toughness, even down to cryogenic temperatures 
  

Market applications:

• Offshore, oil & gas
• Chemical processes
• Seawater cooling equipment
• Control and instrumentation
• Pharmaceutical
• Pulp and paper processing

Technical Data Sheet

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