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ISO 683-17:1999 20NiCrMo7 Steel: Specifications & Listings

ISO 683-17:1999 20NiCrMo7: 20NiCrMo7 is a high-performance carburizing steel with excellent core strength and toughness. The steel is suitable for large-section components subjected to severe cyclic and shock loading.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeISO 683-17:1999 20NiCrMo7
Standard ISO 683-17:1999
ApplicationsUsed in large gears, turbine shafts, marine gearboxes, heavy-duty pinions, and industrial transmissions.
Most Active InEast (Odisha)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
SAE J404 4320 SAE J404:2009 USA 2 listings, 0 RFQs →
IS 1570 (Part 4) 20Ni7Cr2Mo2 IS 1570 (Part 4):1988 India No activity yet
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Low Activity
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 4320 SAE J404:2009 Strong Match
SAE J404 4320 SAE J404:2000 Strong Match
IS 1570 (Part 4) 20Ni7Cr2Mo2 IS 1570 (Part 4):1988 Strong Match
SAE J404 8720 SAE J404:2009 Close Alternative
SAE J404 8720 SAE J404:2000 Close Alternative
IS 11169 (Part 1) 20Ni2Cr2Mo3 IS 11169 (Part 1):2022 Close Alternative
SAE J404 8620 SAE J404:2009 Close Alternative
SAE J404 8620 SAE J404:2000 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 Mo Ni P S
0.17-0.22 0.15-0.30 0.45-0.65 0.40-0.60 0.20-0.30 1.65-2.00 <=0.035 <=0.040
Mechanical Properties
Tensile Strength 1000-1300 MPa
Yield Strength 800 MPa min
Elongation 9-12%
Hardness 300-360 HB

Popular forms for this grade:

Round Bar (2)

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ISO 683-17:1999 20NiCrMo7 Round Bar
2.800 MT
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ISO 683-17:1999 20NiCrMo7 Round Bar
6.300 MT
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