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AISI 4340 Round Bar — Listings

All AISI 4340 Round Bar listings on M-EX.

All AISI 4340 Forms Alloy Steel
Grade Details
GradeAISI 4340
StandardSAE/AISI
DescriptionNickel chrome molybdenum high strength alloy steel
ApplicationsAircraft parts, heavy duty gears, crankshafts, high tensile bolts
Equivalent Grades
Grade Standard Region
34CrNiMo6 DIN/EN Europe
EN24 BS970 UK
SNCM439 JIS Japan
SAE4340 SAE USA

Active AISI 4340 Round Bar Listings 1

AISI 4340 Round Bar
2.200 MT  ·  Closes 02 May 2026
View Listing
Related: All Round Bar grades · Alloy Steel