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Grade A194 Grade 8MN
USA UNS S31651
AISI
American Iron and Steel Institute		 316N
Corresponding Standard ASTM A194/A194M-2023
Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
Classification Austenitic Stainless Steel
Properties Strength Corrosion Resistance
A194 Grade 8MN Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N
Minimum Value - - - - - 16 10 2 0.1
Maximum Value 0.08 1 2 0.045 0.03 18 13 3 0.16
A194 Grade 8MN 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 Germany
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr.
06Cr17Ni12Mo2N
(0Cr17Ni12Mo2N) 		S31658 316N SUS 316N STS 316N 316N S31651 X2CrNiMoN17-11-2 1.4406
2 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS UNS ISO Numerical Grade Numerical Grade
06Cr17Ni12Mo2N S31658 SUS316N S31651 X6CrNiMoN17-12-3 4495-316-51-J (1.4495)
A194Grade8MN Corresponding Standards(Same grade name, different standards)
1 ASTM A194/194M-2016
A194 Grade 8MN S31651 Type 316N
2 ASTM A194/A194M-2020
A194 Grade 8MN S31651 Type 316N
3 ASTM A194/A194M-2023
A194 Grade 8MN S31651 316N

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