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904L

Wst. 1.4539
UNS N08904


Stock program: 3 – 38 mm OD
                             1/8” – 1.1/2” OD

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

Maximum service temperature: 450°C / 824°F 

Alloy 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 alloy 316L and alloy 317L are not adequate. Although originally develop for greatly improved resistance to strong reducing acids, particularly sulphuric acid. The steel 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 alloy 904L has been standardized in many countries.

Characteristics alloy 904L:

Market applications:

Technical details

Technical composition (%)
Fe
Cr
Ni
Mo
Mn
Cu
Si
P
N
C
S
904L min
Bal.
19.0
23.0
4.0
-
1.0
0.045
-
-
-
-
  max
-
23.0
28.0
5.0
2.0
2.0
1.00
0.045
0.10
0.020
0.015
 
 
Mechanical properties
904L
Tensile strenght (mpa, min)
490 - 700
Yield strength (0.2% offset mpa, min)
220
Elongation (%, min)
35
Density / weight (g / cm3 / kg)
8.05

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