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IS 4367:1991 40Cr4 Steel: Specifications & Listings

IS 4367:1991 40Cr4: 40Cr4 is a steel in IS 4367:1991 (Alloy Steel Forgings for General Industrial Use), which covers forgings in the as forged, heat-treated or machined condition.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeIS 4367:1991 40Cr4
Standard IS 4367:1991
Applicationsgears, shafts, axles, spindles, bolts, forged components, machine parts
Most Active InEast (West Bengal)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
EN 10083-3 41Cr4 EN 10083-3:2006 Europe 2 listings, 0 RFQs →
SAE J404 5140 SAE J404:2009 USA 2 listings, 0 RFQs →
JIS G4104 SCr440 JIS G 4104:1979 Japan 0 listings, 2 RFQs →
GB/T 3077 40Cr GB/T 3077:2015 China 2 listings, 0 RFQs →
IS 1570 (Part 4) 40Cr4 IS 1570 (Part 4):1988 India No activity yet
IS 11169 (Part 1) 40Cr4 IS 11169 (Part 1):2022 India No activity yet
BS 970 (Part 3) 530M40 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 1) 530H40 BS 970 (Part 1):1983 UK No activity yet
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 3) 530M40 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 530M40 BS 970 (Part 1):1983 Strong Match
IS 5517 40Cr4 IS 5517:1993 Strong Match
BS 970 (Part 1) 530A40 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 530H40 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 530A36 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 530H36 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 530A30 BS 970 (Part 1):1983 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Si Mn Cr S P
0.35-0.45 0.10-0.35 0.60-0.90 0.90-1.20 <=0.035 <=0.035
Mechanical Properties
Tensile Strength 700-850 MPa
Yield Strength 540 MPa min
Elongation >=18%
Izod Impact 55 J min
Hardness 208-252 HB
Hardness (soft annealed) <=220 HB
Condition Hardened and tempered, ruling section up to 100 mm
Typical Available Sizes
Round Bar 16-300 mm dia
Flat Bar 20-150 mm width
Sizes are indicative. Contact seller for exact availability.

More data from IS 4367:1991

From the standard
Properties by ruling section 3 sections
Tensile strength (MPa)Yield strength, min (MPa)Elongation, min (%)Izod impact, min (J)Hardness (HB)Limiting ruling section (mm)
700 to 8505401855208 to 252100
800 to 9506001655235 to 28063
900 to 10507001550266 to 31130
Test condition: hardened and tempered. Maximum hardness in the soft annealed condition: 220 HB.
Source: IS 4367:1991 with Amendments 1 and 2, Table 3
Sulphur, phosphorus and aluminium limits ordering options
Option 1
Sulphur and phosphorus 0.030 max each
Option 2
Sulphur 0.020 to 0.035, phosphorus 0.035 max
Aluminium, when the steel is aluminium killed
0.02 to 0.05
The purchaser orders sulphur and phosphorus under option 1 or option 2.
Source: IS 4367:1991 with Amendments 1 and 2, Table 1, notes 1 and 2

Popular forms for this grade:

Round Bar (2)

Active IS 4367:1991 40Cr4 Listings on M-EX (For Sale)

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IS 4367:1991 40Cr4 Round Bar
1.700 MT
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IS 4367:1991 40Cr4 Round Bar
6.800 MT
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