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904L


 
Product introduction
904L is a high alloying austenitic stainless steel with very low carbon content. 904L alloy, like other commonly used CrNi austenitic steels, has good resistance to point corrosion and crevice corrosion, high resistance to stress corrosion cracking, good resistance to intergranular corrosion, good machinability and weldability. The alloy is used in the manufacture of petroleum and petrochemical equipment, such as petrochemical equipment reactor, sulfuric acid storage and transportation equipment, power plant flue gas desulfurization unit, organic acid treatment system scrubbers and fans, etc.



Specifications
Grade UNS W. Nr
904L N08904 1.4539
 


Mechanical properties
Minimum value at 20℃
抗拉強度 / Tensile Strength
σb/MPa
屈服強度 / Yield Strength
σp0.2/ MPa
屈延伸率 / Elongatior
σ 5/%
490 215 35
 


Chemical composition
牌號 / Grade % Ni Cr Mo Cu Fe C Mn P S
904L Min 23 19 4 1 Bal.        
Max 28 21 5 2 0.02 2 0.03 0.015
 


Standards
板材/板材卷材
Sheet / sheet coil
無縫管/管
Seamless tube / pipe
焊管
Welded pipe
圓棒
Round bar
法蘭
The flange
ASTM A213
BS EN 10216-5
ASTM A789
ASTM A790
ASTM A928 ASTM A276
ASTM A479
ASTM A182 F53

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