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IS 4367:1991 20NiCrMo2 Steel: Specifications & Listings

IS 4367:1991 20NiCrMo2: 20NiCrMo2 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 20NiCrMo2
Standard IS 4367:1991
ApplicationsNickel-chromium-molybdenum case-hardening steel; used for highly stressed gears, shafts, and transmission components requiring high core strength, toughness, and wear-resistant carburized surface
Most Active InCentral (Madhya Pradesh)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
EN 10084 20NiCrMo2-2 EN 10084:2008 Europe 4 listings, 1 RFQ →
AISI 8620 AISI USA 2 listings, 0 RFQs →
JIS G4053 SNCM220 JIS G4053:2008 Japan 1 listing, 1 RFQ →
IS 11169 (Part 1) 20NiCrMo2 IS 11169 (Part 1):2022 India No activity yet
SAE J404 8622 SAE J404:2009 USA No activity yet
SAE J404 8625 SAE J404:2009 USA No activity yet
SAE J404 8627 SAE J404:2009 USA No activity yet
SAE J404 8720 SAE J404:2009 USA No activity yet
SAE J404 8615 SAE J404:2000 USA No activity yet
SAE J404 8617 SAE J404:2000 USA No activity yet
SAE J404 8620 SAE J404:2000 USA No activity yet
BS 970 (Part 1) 805A20 BS 970 (Part 1):1983 UK No activity yet
BS 970 (Part 1) 805A22 BS 970 (Part 1):1983 UK No activity yet
Supply & Demand by FormSee Full Supply & Demand →
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Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 8620 SAE J404:2009 Strong Match
SAE J404 8620 SAE J404:2000 Strong Match
IS 1570 (Part 4) 20Ni2Cr2Mo2 IS 1570 (Part 4):1988 Strong Match
IS 11169 (Part 1) 21Ni2Cr2Mo2 IS 11169 (Part 1):2022 Strong Match
BS 970 (Part 1) 805A20 BS 970 (Part 1):1983 Strong Match
SAE J404 8622 SAE J404:2009 Strong Match
SAE J404 8622 SAE J404:2000 Strong Match
SAE J404 8720 SAE J404:2009 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 Ni Cr Mo S P
0.18-0.23 0.20-0.35 0.70-0.90 0.40-0.70 0.40-0.60 0.15-0.25 <=0.035 <=0.035
Mechanical Properties
Tensile Strength 900 MPa min
Elongation >=11%
Izod Impact 41 J min
Hardness (soft annealed) <=213 HB
Condition Refined, quenched and stress relieved (core properties), ruling section up to 30 mm

More data from IS 4367:1991

From the standard
Properties by ruling section 1 section
Tensile strength (MPa)Yield strength, min (MPa)Elongation, min (%)Izod impact, min (J)Hardness (HB)Limiting ruling section (mm)
900 MinNot specified1141Not specified30
Test condition: refined, quenched and stress relieved. The values are core properties of the case-hardening steel. Maximum hardness in the soft annealed condition: 213 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)

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IS 4367:1991 20NiCrMo2 Round Bar
7.100 MT
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IS 4367:1991 20NiCrMo2 Round Bar
5.000 MT
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