Grade A194 Grade 6F
USA UNS S41600
AISI
American Iron and Steel Institute
416
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 Martensitic Stainless Steel
Properties Corrosion Resistance Machinability
A194 Grade 6F Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value - - - - 0.15 12
Maximum Value 0.15 1 1.25 0.06 - 14
A194 Grade 6F Mechanical Properties
product Heat Treatment or Condition
Hardness
HBW
Finished Nuts Heat Treatment 228~271HBW
20~28HRC
Approximate Comparison Table Martensitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS BS EN/BS
Y12Cr13
(Y1Cr13)
S41617 416 SUS 416 STS 416 416 S41600 X12CrS 13 4005-416-00-I X12CrS 13 1.4005 Z12CF 13
Z11CF13
X12CrS 13 1.4005 2380 416S21
A194Grade6F Corresponding Standards(Same grade name, different standards)

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