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AISI 4340 Steel: Supply & Demand

Buyer RFQ demand against seller listing supply for AISI 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

In Demand

Healthy

Oversupplied

Deep Supply

Low Activity

Form	Supply	Demand	Status	Price Band (Rs./MT)
Round Bar	51	1	Deep Supply	74,165 to 107,000 median 97,077

AISI 4340's demand ranks in the top 38% of all 484 tracked grades platform-wide.

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.

AISI 4340 is an Alloy Steel grade: Nickel chrome molybdenum high strength alloy steel. Typical applications: Aircraft parts, heavy duty gears, crankshafts, high tensile bolts.

Equivalent / Similar Grades (6)

Grade	Standard	Region
34CrNiMo6	DIN/EN	Europe
EN24	BS 970	UK
SNCM439	JIS	Japan
SAE4340	SAE	USA
E4340	SAE J404	USA
4340	SAE J404	USA

Chemical Composition (%)

C	Mn	Cr	Mo	Ni	Si
0.38–0.43	0.60–0.80	0.70–0.90	0.20–0.30	1.65–2.00	0.15–0.35

Mechanical Properties

Condition	Quenched & Tempered
Tensile Strength	1000–1200 MPa
Yield Strength	≥830 MPa
Elongation	≥12%
Hardness	285–341 HB