Grade 440C
Corresponding Standard CNS 3477-2016
Stainless steel wire rods
Classification Martensitic Stainless Steel
Properties Machinability
440C Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value 0.95 - - - - 16 - -
Maximum Value 1.2 1 1 0.04 0.03 18 0.6 0.75
1 Approximate Comparison Table Stainless Bearing Steel
China Taiwan, China Japan South Korea Russia
GB ISC CNS JIS KS GOST
9Cr18 S44090 440C SUS440C STS440C 95Х18
2 Approximate Comparison Table Stainless Bearing Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Sweden
GB ISC CNS JIS KS ASTM/AISI ISO DIN EN/DIN W-Nr. NF EN/NF SKF
9Cr18Mo
G102Cr18Mo
S45090
B21810
440C SUS440C STS440C A756 440C X108CrMo17
(B52)
X102CrMo17 1.3543 Z100CD17 SKF577
STORA577
3 Approximate Comparison Table Martensitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
108Cr17
(11Cr17)
9Cr18
S44096 440C SUS 440C STS 440C 440C S44004 X105CrMo 17
A-1b
(ISO 683-13-1986)
X105CrMo 17 1.4125 Z100CD17 X105CrMo 17 1.4125 95Х18

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