SAE J404:2009 4140 Steel Flat Bar Listings

Grade Details

Grade	SAE J404:2009 4140
Standard	SAE J404:2009
Description	Chromium-molybdenum alloy steel SAE 4140 (UNS G41400) to SAE J404 JAN2009, a chemistry-only grade. Carbon 0.38-0.43% and manganese 0.75-1.00%.
Applications	Gears, shafts, dies, bolts, crankshafts

Equivalent Grades

Grade	Standard	Region	Live Flat Bar on M-EX
EN 10083-3 42CrMo4	EN 10083-3	Europe	3 listings, 3 RFQs →
BS 970 EN19	BS 970	UK	3 listings, 0 RFQs →
JIS G4105 SCM440	JIS G4105	Japan	No activity yet
SAE J404 4137	SAE J404	USA	No activity yet
SAE J404 4142	SAE J404	USA	No activity yet
SAE J404 4145	SAE J404	USA	No activity yet
SAE J404 4150	SAE J404	USA	No activity yet
SAE J404 4135	SAE J404	USA	No activity yet
SAE J404 4140	SAE J404	USA	No activity yet
BS 970 (Part 3) 708M40	BS 970 (Part 3)	UK	No activity yet
BS 970 (Part 1) 708A40	BS 970 (Part 1)	UK	No activity yet

Market Snapshot

Market balanced

Updated 15 Oct 2026

7D Offer Price

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15D Offer Price

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30D Offer Price

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Supply & Demand: Flat Bar See Full Supply & Demand →

SAE J404:2009 4140 Flat Bar Healthy

Processing:

Active SAE J404:2009 4140 Flat Bar Listings (For Sale) 3

SAE J404:2009 4140 Flat Bar

1.600 MT · Closes 29 Oct 2026

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SAE J404:2009 4140 Flat Bar

1.300 MT · Closes 01 Nov 2026

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SAE J404:2009 4140 Flat Bar

1.600 MT · Closes 30 Oct 2026

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SAE J404:2009 4140 Flat Bar

1.900 MT · Closes 31 Oct 2026

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SAE J404:2009 4140 Flat Bar

1.300 MT · Closes 27 Oct 2026

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SAE J404:2009 4140 Flat Bar

1.800 MT · Closes 29 Oct 2026

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Related: All Flat Bar grades · Alloy Steel