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Grade A194 Grade 8
USA UNS S30400
Other Names
Corresponding Standard ASTM A194/194M-2016
Carbon steel, Alloy steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
Classification Austenitic Stainless Steel
Properties Corrosion Resistance Weldability
A194 Grade 8 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 18 8
Maximum Value 0.08 1 2 0.045 0.03 20 11
• The intentional addition of Bi, Se, Te, and Pb is not permitted except for Grades 6F, 8F, and 8FA, in which Se is specified and required.
A194 Grade 8 Mechanical Properties
product Hardness
HBW
Finished Nuts 126~300HBW
≤32HRC
≥60HRB
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr19Ni9 S30408 304 SUS 304 STS 304 304 S30400 X5CrNi 18-10 4301-304-00-I X5CrNi 18-10
(X5CrNi 18-9) 		1.4301 Z6CN 18-09 X5CrNi 18-10 1.4301 08Х18Н10 2332
2333 		304S15
2 Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr19Ni10
(0Cr18Ni9) 		S30408 304 SUS 304 STS 304 304 S30400 X5CrNi 18-10 X5CrNi 18-10
(X5CrNi 18-9) 		1.4301 Z6CN 18-09 X5CrNi 18-10 1.4301 08Х18Н10 2332
2333 		304S15
3 Approximate Comparison Table Stainless Steels for Cold Heading and Cold Extruding
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM/AISI UNS ISO Numerical Grade EN Numerical Grade
06Cr19Ni10
(0Cr18Ni9) 		S30408 SUS304 304 S30400 X5CrNi18-10 4301-304-00-I X5CrNi18-10 1.4301
A194Grade8 Corresponding Standards(Same grade name, different standards)
1 ASTM A194/194M-2016
A194 Grade 8 S30400 Type 304
2 ASTM A194/A194M-2020
A194 Grade 8 S30400 Type 304
3 ASTM A194/A194M-2023
A194 Grade 8 S30400 304

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