4340 Flat Bar — Listings

All 4340 Flat Bar listings on M-EX.

All 4340 Forms Alloy Steel

Grade Details

Grade	4340
Standard	SAE
Description	Nickel chrome molybdenum steel, very high strength
Applications	Aircraft parts, heavy duty gears, crankshafts

Equivalent Grades

Active 4340 Flat Bar Listings 3

4340 Flat Bar

2.000 MT · Closes 18 May 2026

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4340 Flat Bar

1.500 MT · Closes 27 May 2026

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4340 Flat Bar

1.000 MT · Closes 22 May 2026

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Related: All Flat Bar grades · Alloy Steel