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TelFax +91-22-23813409
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Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel is also resistant to stress corrosion cracking and crevice corrosion. Grade 904L is non-magnetic, and offers excellent formability, toughness and weldability.
Grade 904L contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex stainless steel 2205.
Rod / Round Bar / Circles / Plates / Sheet / Flat Bar / Forgings / Pipes / Tubes
Grade
C
Mn
Si
P
S
Cr
Mo
Ni
Cu
904L
min.
max.
-
0.02
2
1
0.045
0.035
19
23
4
5
28
Tensile Strength (MPa) min
Yield Strength 0.2% Proof (MPa) min
Elongation (% in 50mm) min
Hardness
Rockwell B (HR B)
Brinell (HB)
490
220
36
70-90 typical
150
Density (kg/m3)
Elastic Modulus (GPa)
Mean Co-eff of Thermal Expansion (µm/m/°C)
Thermal Conductivity (W/m.K)
Specific Heat 0-100°C (J/kg.K)
Elec Resistivity (nΩ.m)
0-100°C
0-315°C
0-538°C
At 20°C
At 500°C
7900
190
15
11.5
500
952
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