IS 11169 (Part 1):2022 30C7 Steel: Specifications & Listings
IS 11169 (Part 1):2022 30C7: Cold heading quality non-alloy steel 30C7 to IS 11169 (Part 1):2022 for quenching and tempering after cold heading or cold extrusion, supplied as wire rod, bars or wire of 2 to 100 mm. Maximum tensile strength annealed is 590 MPa.
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cu
Mn
P
S
Si
0.27-0.33
<=0.25
0.50-0.80
<=0.025
<=0.025
<=0.30
Mechanical Properties
Tensile Strength, annealed (+AC)
<=590 MPa (over 10 to 40 mm)
More data from IS 11169 (Part 1):2022
From the standard
Other composition limitsfrom the table notes and clauses
Values
Maximum unless a range is given (ladle analysis)
Silicon
Lower silicon contents may be agreed when ordering, with due regard to the effect on properties such as hardenability
Deoxidation
Aluminium killed (clause 6.2)
Elements not listed are not added intentionally without the purchaser's agreement, except those used to finish the heat.
Source: IS 11169 (Part 1):2022, Table C.2 and its notes, clause 6.2
Tensile strength and reduction of area by delivery conditionby delivery condition and size
Delivery condition
Diameter (mm)
Tensile strength, max (MPa)
Reduction of area, min (%)
+AC or +AC+PE
over 10 to 40
590
-
+AR+C+AC+LC
2 (incl.) to 5
620
55
+AR+C+AC+LC
over 5 to 10
620
55
+AR+C+AC+LC
over 10 to 40
620
55
+AC+C
over 5 to 10
620
55
+AC+C
over 10 to 40
620
55
Codes: +AR as hot rolled, +PE peeled, +C cold drawn, +AC annealed to spheroidized carbides, +LC skin passed. For non-circular sections the properties are agreed between manufacturer and purchaser.
Source: IS 11169 (Part 1):2022, Table C.4
Active IS 11169 (Part 1):2022 30C7 Listings on M-EX (For Sale)