AISI 1040 Steel: Specifications & Listings

AISI 1040: Medium carbon steel, widely used in machined parts

Forms: Round Bar Category: Carbon Steel
Grade Details
GradeAISI 1040
Standard AISI
ApplicationsShafts, gears, bolts, couplings, crankshafts
Most Active InWest (Gujarat, Maharashtra)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 1570 (Part 2/Sec 1) 40C8 IS 1570 (Part 2/Sec 1):1979 India No activity yet
BS 970 EN8 BS 970:1955 UK 28 listings, 24 RFQs →
JIS G4051 S40C JIS G4051:2009 Japan 3 listings, 0 RFQs →
SAE J403 1040 SAE J403:2014 USA 2 listings, 0 RFQs →
SAE J403 1038 SAE J403:2001 USA No activity yet
SAE J403 1039 SAE J403:2001 USA No activity yet
SAE J403 1042 SAE J403:2001 USA No activity yet
BS 970 (Part 1) 080H41 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 1) 060A40 BS 970 (Part 1):1983 UK No activity yet
Market Snapshot
See Full Price Gap →
7D Offer Price
● 0.0%
15D Offer Price
● 0.0%
30D Offer Price
▲ +0.5%
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Deep Supply
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J403 1040 SAE J403:2014 Strong Match
SAE J403 1040 SAE J403:2001 Strong Match
SAE J403 1040 SAE J403:2009 Strong Match
BS 970 (Part 1) 080M40 BS 970 (Part 1):1983 Strong Match
SAE J403 1039 SAE J403:2014 Strong Match
BS 970 (Part 1) 080H41 BS 970 (Part 1):1983 Strong Match
SAE J403 1038 SAE J403:2014 Strong Match
SAE J403 1039 SAE J403:2001 Strong Match
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn S P
0.37–0.44 0.60–0.90 ≤0.050 ≤0.030
Mechanical Properties
Condition Hot Rolled
Tensile Strength 565-690 MPa
Yield Strength 375-460 MPa
Elongation 20-30%
Hardness 179-217 HB
Typical Available Sizes
Round Bar 10mm–250mm dia
Flat Bar 16×5mm–200×50mm
Hex Bar 13mm–100mm A/F
Sizes are indicative. Contact seller for exact availability.

Popular forms for this grade:

Round Bar (3)

Active AISI 1040 Listings on M-EX (For Sale)

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AISI 1040 Round Bar
4.300 MT
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AISI 1040 Round Bar
2.400 MT
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AISI 1040 Round Bar
5.000 MT
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Buyer RFQs for AISI 1040

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