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IS 11169 (Part 1):1984 30C8 Steel: Specifications & Listings

IS 11169 (Part 1):1984 30C8: Cold heading quality carbon steel 30C8 to IS 11169 (Part 1):1984, for quenching and tempering, supplied as wire, wire rod or bars of 2 to 100 mm diameter. Old designation C30. The standard was reaffirmed in 2004.

Category: Carbon Steel
Grade Details
GradeIS 11169 (Part 1):1984 30C8
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) 30C8 IS 11169 (Part 1):2022 India No activity yet
BS 970 (Part 3) 080A30 BS 970 (Part 3):1991 UK No activity yet
BS 970 EN3D BS 970:1955 UK No activity yet
BS 970 EN4A BS 970:1955 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
ASTM A516/A516M Grade 60 ASTM A516/A516M:2025 USA (ASTM) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 11169 (Part 1) 35C8 IS 11169 (Part 1):1984 Strong Match
BS 970 (Part 3) 080M30 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 3) 080A30 BS 970 (Part 3):1991 Strong Match
IS 1570 (Part 2/Sec 1) 30C8 IS 1570 (Part 2/Sec 1):1979 Strong Match
BS 970 EN5A BS 970:1955 Strong Match
BS 970 EN5B BS 970:1955 Strong Match
BS 970 EN5C BS 970:1955 Strong Match
BS 970 EN6K BS 970:1955 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 Si
0.25-0.35 0.60-0.90 0.10-0.35
Mechanical Properties
Hardness, annealed <=160 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
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 2 notes
Hardness in the annealed condition 1 condition
Annealed, maximum
160 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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