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IS 1570 (Part 4):1988 15Cr3 Steel: Specifications & Listings

IS 1570 (Part 4):1988 15Cr3: 15Cr3: alloy steel (constructional or spring group) with specified chemical composition. Specified in IS 1570 (Part 4):1988.

Category: Alloy Steel
Grade Details
GradeIS 1570 (Part 4):1988 15Cr3
Standard IS 1570 (Part 4):1988
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 4367 15Cr3 IS 4367:1991 India 1 listing, 1 RFQ →
IS 11169 (Part 1) 15Cr3 IS 11169 (Part 1):2022 India No activity yet
BS 970 (Part 1) 523H15 BS 970 (Part 1):1991 UK No activity yet
BS 970 EN206 BS 970:1955 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 (Part 1) 523H15 BS 970 (Part 1):1991 Strong Match
BS 970 EN206 BS 970:1955 Strong Match
SAE J404 5115 SAE J404:2009 Close Alternative
SAE J404 5115 SAE J404:2000 Close Alternative
BS 970 (Part 1) 523M15 BS 970 (Part 1):1983 Close Alternative
BS 970 (Part 1) 523H15 BS 970 (Part 1):1983 Close Alternative
BS 970 EN207 BS 970:1955 Close Alternative
IS 11169 (Part 1) 15Cr3 IS 11169 (Part 1):1984 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
0.12-0.18 0.15-0.35 0.40-0.60 0.50-0.80
Mechanical Properties
Tensile Strength >=590 MPa
Elongation >=13%
Izod Impact >=48 J
Condition Case hardening steel, refined and quenched, core properties

More data from IS 1570 (Part 4):1988

From the standard
Core properties, case hardening steel, refined and quenched core properties
Tensile strength, min
590 MPa
Elongation, min
13%
Izod impact, min
48 J
If core strength exceeds 1 000 MPa the ruling section may equal the test piece diameter.
Source: IS 1570 (Part 4):1988, Table 9

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