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SAE J404:2009 4340 Flat Bar Listings

All SAE J404:2009 4340 Flat Bar listings on M-EX.

All SAE J404:2009 4340 Forms Alloy Steel
Grade Details
GradeSAE J404:2009 4340
Standard SAE J404:2009
DescriptionNickel-chromium-molybdenum alloy steel SAE 4340 (UNS G43400) to SAE J404 JAN2009, a chemistry-only grade. Carbon 0.38-0.43% and manganese 0.60-0.80%.
ApplicationsAircraft parts, heavy duty gears, crankshafts
Equivalent Grades
Grade Standard Region Live Flat Bar on M-EX
EN 10083-3 34CrNiMo6 EN 10083-3 Europe No activity yet
BS 970 EN24 BS 970 UK 3 listings, 3 RFQs →
JIS G4103 SNCM439 JIS G4103 Japan No activity yet
SAE J404 E4340 SAE J404 USA No activity yet
SAE J404 4340 SAE J404 USA No activity yet
GB/T 3077 40CrNi2Mo GB/T 3077 China No activity yet
Market Snapshot
See Full Price Gap →
7D Offer Price
● 0.0%
15D Offer Price
● 0.0%
30D Offer Price
▲ +0.3%
Supply & Demand: Flat Bar See Full Supply & Demand →
SAE J404:2009 4340 Flat Bar Deep Supply

Active SAE J404:2009 4340 Flat Bar Listings (For Sale) 3

SAE J404:2009 4340 Flat Bar
1.000 MT  ·  Closes 29 Oct 2026
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SAE J404:2009 4340 Flat Bar
0.600 MT  ·  Closes 28 Oct 2026
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SAE J404:2009 4340 Flat Bar
2.100 MT  ·  Closes 26 Oct 2026
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Related: All Flat Bar grades · Alloy Steel