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40X Round Bar — Listings

All 40X Round Bar listings on M-EX.

All 40X Forms Alloy Steel
Grade Details
Grade40X
StandardGOST 4543
DescriptionChromium alloy structural steel with good hardenability, strength and wear resistance after heat treatment. Commonly used for stressed machine parts.
Applicationsgears, shafts, axles, spindles, studs, automotive components
Equivalent Grades
Grade Standard Region
41Cr4 DIN EN 10083 Germany
AISI 5140 AISI USA
SCr440 JIS Japan
40Cr GB China
GB/T 3077 40Cr GB/T 3077 China

Active 40X Round Bar Listings 2

40X Round Bar
1.900 MT  ·  Closes 06 Aug 2026
View Listing
40X Round Bar
3.600 MT  ·  Closes 05 Aug 2026
View Listing
Related: All Round Bar grades · Alloy Steel