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USA UNS N08904
ASTM
Specification or Grade		 904L
Corresponding Standard ASTM A240/240M-2018
Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N
Minimum Value - - - - - 19 23 1 4 -
Maximum Value 0.02 1 2 0.045 0.035 23 28 2 5 0.1
1 Approximate Comparison Table
China Japan United States International Organization for Standardization France European Standard Sweden United Kingdom
GB ISC JIS ASTM/AISI UNS ISO Numerical Grade NF EN/NF EN Numerical Grade SS BS EN/BS
015Cr21Ni26Mo5Cu2 S31782 SUS 890L 904L N08904 X1NiCrMoCu25-20-5 4539-089-04-I Z2NCDU25-20 X1NiCrMoCu25-20-5 1.4539 2562 904S13
2 Approximate Comparison Table
China United States International Organization for Standardization European Standard
ISC UNS ISO Numerical Grade Numerical Grade
S39042 N08904 X1NiCrMoCu22-20-5-2 4656-089-04-I 1.4656①

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