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SAE J404 4340 Steel: Supply & Demand

Buyer RFQ demand against seller listing supply for SAE J404 4340, broken down by form. Signals are indicative and derived from listings and RFQs.

Last updated: 15 Oct 2026, 10:00 PM

Live Signal Lifetime
Live Signal: This grade’s supply and demand by form, from listings and RFQs open right now. Use this to act today. For example, “Is there a buyer gap in this grade’s round bar this week?”
Shortage
0
In Demand
1
Healthy
0
Oversupplied
0
Deep Supply
2
Low Activity
0
Form Supply Demand Status Price Band (Rs./MT)
Round Bar 11 14 In Demand 66,582 to 110,281
median 75,960
Forging 3 1 Deep Supply 66,771 to 106,921
median 86,784
Flat Bar 3 0 Deep Supply 102,181 to 103,830
median 102,269
SAE J404 4340's demand ranks in the top 2% of all 484 tracked grades platform-wide.
The Round Bar form most recently moved into In Demand, 40 days ago.

Disclaimer: All information on this page is indicative only and derived from posted listings and RFQs on M-EX. It does not constitute a market price quote or investment advice. M-EX and GTE make no representations as to accuracy or completeness. Actual activity depends on quantity, quality, payment terms and other commercial factors agreed between buyers and sellers.

SAE J404 4340 is an Alloy Steel grade: Nickel-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%. Typical applications: Aircraft parts, heavy duty gears, crankshafts.
Equivalent / Similar Grades (6)
Grade Standard Region
34CrNiMo6 DIN/EN Europe
EN24 BS 970 UK
SNCM439 JIS Japan
E4340 SAE J404 USA
4340 SAE J404 USA
40CrNi2Mo GB/T 3077 China
Chemical Composition (%)
C Cr Mn Mo Ni P S Si
0.38-0.43 0.70-0.90 0.60-0.80 0.20-0.30 1.65-2.00 <=0.030 <=0.040 0.15-0.35