USA UNS G51986
AISI
American Iron and Steel Institute
E51100
SAE
Steel Number
E51100
Corresponding Standard SAE J 1249-2008
Former SAE Standard and Former SAE EX-Steels
Classification Alloy Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value 0.98 0.15 0.25 - - 0.9
Maximum Value 1.1 0.35 0.45 0.025 0.025 1.15
Approximate Comparison Table High-Carbon Chromium Bearing Steel
China Taiwan, China Japan South Korea United States Germany France Russia Sweden
GB ISC CNS JIS KS ASTM/AISI UNS SAE DIN EN/DIN W-Nr. NF EN/NF GOST SKF
GCr9 B00090 SUJ1 SUJ1 STB1 E51100 G51986 E51100 105Cr4
(W2)
1.3503 105Cr4
(105C5)
ЩХ9 SKF13

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