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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: 16 Oct 2026, 1:00 AM

Live Signal Lifetime
Lifetime: This grade’s supply and demand by form, across everything ever listed on M-EX. Use this for the long view. For example, “Has this grade historically drawn more buyers than sellers?”
Shortage
0
In Demand
0
Healthy
0
Oversupplied
2
Deep Supply
1
Low Activity
0
Form Supply Demand Status Price Band (Rs./MT)
Round Bar 343 189 Oversupplied 66,051 to 126,000
median 87,431
Forging 52 16 Oversupplied 65,375 to 107,462
median 86,375
Flat Bar 53 0 Deep Supply 101,526 to 105,000
median 102,871
SAE J404 4340's demand ranks in the top 2% of all 484 tracked grades platform-wide.
The Forging form most recently moved into Shortage, 0 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