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IS 11169 (Part 1):1984 15C8 Steel: Specifications & Listings

IS 11169 (Part 1):1984 15C8: Cold heading quality carbon steel 15C8 to IS 11169 (Part 1):1984, listed both for use without heat treatment and as a case hardening steel, supplied as wire, wire rod or bars of 2 to 100 mm diameter. Old designation C15Mn75. The standard was reaffirmed in 2004.

Category: Carbon Steel
Grade Details
GradeIS 11169 (Part 1):1984 15C8
Standard IS 11169 (Part 1):1984
ApplicationsCold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 11169 (Part 1) 15C8 IS 11169 (Part 1):2022 India No activity yet
SAE J403 1016 SAE J403:2001 USA No activity yet
SAE J403 1018 SAE J403:2001 USA No activity yet
SAE J403 1019 SAE J403:2001 USA No activity yet
BS 970 (Part 1) 080A15 BS 970 (Part 1):1991 UK No activity yet
BS 970 (Part 1) 080M15 BS 970 (Part 1):1991 UK No activity yet
BS 970 (Part 1) 130M15 BS 970 (Part 1):1991 UK No activity yet
BS 970 EN6 BS 970:1955 UK No activity yet
BS 970 EN6A BS 970:1955 UK No activity yet
BS 970 EN6K BS 970:1955 UK No activity yet
BS 970 EN32B BS 970:1955 UK No activity yet
ASTM A516/A516M Grade 55 ASTM A516/A516M:2025 USA (ASTM) No activity yet
ASTM A516/A516M Grade 60 ASTM A516/A516M:2025 USA (ASTM) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 1570 (Part 2/Sec 1) 15C8 IS 1570 (Part 2/Sec 1):1979 Strong Match
IS 11169 (Part 1) 14C6 IS 11169 (Part 1):1984 Strong Match
SAE J403 1016 SAE J403:2014 Strong Match
SAE J403 1018 SAE J403:2014 Strong Match
BS 970 (Part 1) 080M15 BS 970 (Part 1):1991 Strong Match
BS 970 (Part 1) 080M15 BS 970 (Part 1):1983 Strong Match
SAE J403 1016 SAE J403:2001 Strong Match
SAE J403 1018 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 Mn
0.10-0.20 0.60-0.90
Mechanical Properties
Hardness, annealed <=140 HB

More data from IS 11169 (Part 1):1984

From the standard
Other composition limits from the clauses and notes
Sulphur and phosphorus, maximum
0.035 percent each; other limits by agreement
Deoxidation
Rimmed, semi-killed or killed, as ordered
Nitrogen, when ordered rimmed
Below 0.008 percent
Silicon, when ordered as a case hardening steel
0.10-0.35 percent
Elements not specified, maximum
Cr 0.15, Ni 0.15, Cu 0.15, Sn 0.02, Mo 0.05, V 0.05 percent; total 0.40
Narrower carbon and silicon ranges may be agreed between purchaser and manufacturer; elements not listed are not added except by agreement or to finish the heat.
Source: IS 11169 (Part 1):1984, clauses 4.1.2, 4.1.3, 4.2 and 4.4, Table 1, Table 3 notes
Hardness in the annealed condition 1 condition
Annealed, maximum
140 HB
Brinell hardness for products delivered in the annealed condition.
Source: IS 11169 (Part 1):1984, Table 5, clause 8.1

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