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IS 4367:1991 20C15 Steel: Specifications & Listings

IS 4367:1991 20C15: 20C15 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: Carbon Steel
Grade Details
GradeIS 4367:1991 20C15
Standard IS 4367:1991
ApplicationsLow-carbon case-hardening (carburizing) steel; used for lightly stressed components such as pins, bushes, and small shafts requiring a hard wear-resistant surface with a tough core
Most Active InWest (Maharashtra, Gujarat)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
DIN 17210 20Mn5 DIN 17210:1986 Germany 1 listing, 1 RFQ →
SAE J403 1522 SAE J403:2014 USA 1 listing, 1 RFQ →
EN 10084 20MnCr5 EN 10084:2008 Europe 11 listings, 11 RFQs →
IS 1570 (Part 4) 20C15 IS 1570 (Part 4):1988 India No activity yet
IS 11169 (Part 1) 20C15 IS 11169 (Part 1):2022 India No activity yet
SAE J403 1524 SAE J403:2001 USA No activity yet
BS 970 (Part 3) 150M19 BS 970 (Part 3):1991 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) 150M19 BS 970 (Part 3):1991 Strong Match
IS 5517 20C15 IS 5517:1993 Strong Match
BS 970 (Part 1) 150M19 BS 970 (Part 1):1983 Strong Match
SAE J403 1524 SAE J403:2001 Strong Match
SAE J403 1524 SAE J403:2009 Strong Match
SAE J403 1524 SAE J403:2014 Strong Match
IS 5517 27C15 IS 5517:1993 Strong Match
SAE J403 1522 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 Si Mn S P
0.16-0.24 0.10-0.35 1.30-1.70 <=0.035 <=0.035
Mechanical Properties
Tensile Strength 600-750 MPa
Yield Strength 400 MPa min
Elongation >=18%
Izod Impact 50 J min
Hardness 178-221 HB
Hardness (soft annealed) <=200 HB
Condition Hardened and tempered, ruling section up to 63 mm

More data from IS 4367:1991

From the standard
Properties by ruling section 2 sections
Tensile strength (MPa)Yield strength, min (MPa)Elongation, min (%)Izod impact, min (J)Hardness (HB)Limiting ruling section (mm)
600 to 7504001850178 to 22163
700 to 8504601650208 to 25230
Test condition: hardened and tempered. Maximum hardness in the soft annealed condition: 200 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 20C15 Listings on M-EX (For Sale)

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IS 4367:1991 20C15 Round Bar
2.200 MT
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IS 4367:1991 20C15 Round Bar
2.800 MT
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