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IS 1570 (Part 4):1988 18C10BT Steel: Specifications & Listings

IS 1570 (Part 4):1988 18C10BT: 18C10BT: boron treated alloy steel with specified chemical composition. Specified in IS 1570 (Part 4):1988.

Category: Alloy Steel
Grade Details
GradeIS 1570 (Part 4):1988 18C10BT
Standard IS 1570 (Part 4):1988
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 11169 (Part 1) 18C10BT IS 11169 (Part 1):2022 India No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 11169 (Part 1) 17C10BT IS 11169 (Part 1):2022 Close Alternative
IS 11169 (Part 1) 21C10BT IS 11169 (Part 1):2022 Close Alternative
IS 11169 (Part 1) 17C8BT IS 11169 (Part 1):2022 Close Alternative
IS 11169 (Part 1) 26C10BT IS 11169 (Part 1):2022 Close Alternative
IS 11169 (Part 1) 30C10BT IS 11169 (Part 1):2022 Close Alternative
IS 11169 (Part 1) 20C10BT (quenching and tempering) IS 11169 (Part 1):2022 Close Alternative
IS 1570 (Part 4) 16Mn5Cr4 IS 1570 (Part 4):1988 Close Alternative
IS 11169 (Part 1) 16Mn5Cr4 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 B
0.15-0.20 0.15-0.30 0.80-1.10 0.10-0.30 0.0005-0.003

More data from IS 1570 (Part 4):1988

From the standard
Hardenability band (end quench test) 8 distances
Distance from quenched end (mm)Upper limit (HRC)Lower limit (HRC)
1.584639
3.104537
4.764232
6.353822
7.933720
9.523514
11.113212
12.73010
Tentative limits for specified hardenability of boron steels.
Source: IS 1570 (Part 4):1988, Table 12

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