IS 1570 (Part 2/Sec 1):1979 14C6 Steel: Specifications & Listings
IS 1570 (Part 2/Sec 1):1979 14C6: Unalloyed carbon steel designated 14C6 in IS 1570 (Part 2/Sec 1):1979, with carbon 0.10-0.18% and manganese 0.40-0.70%. Old designation C14. The standard was reaffirmed in 2004.
Billets and bars for forgings, carbon steel forgings, case hardened parts and carburised bearing parts (the standard links this grade to IS 1875, IS 2004, IS 4432, IS 5489)
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Mn
0.10-0.18
0.40-0.70
Mechanical Properties
Tensile Strength
370-450 MPa
Elongation
>=26%
More data from IS 1570 (Part 2/Sec 1):1979
From the standard
Core properties after case hardeningrefined and quenched
Tensile strength, min (MPa)
Elongation, min (%)
Izod impact, min (J)
Limiting ruling section (mm)
500
17
55
Over 15 up to 30
Properties in the core of case-hardened parts after refining and quenching. Impact value applies when specified.
Source: IS 1570 (Part 2/Sec 1):1979, Edition 2.1 (Amendment 1, December 1989), Table 5
Tubes, cold drawn2 conditions
Condition
Tensile strength, min (MPa)
Yield stress, min (MPa)
Cold drawn and annealed
320
170
Cold drawn, or cold drawn and tempered
440
38
Elongation, min: 950 divided by the actual tensile strength in kgf/mm² on a gauge length of 5.65 times the square root of the cross-section, or 1100 divided by it on 4 times the square root. Table 8 of the standard prints this yield stress as 38 under MPa; it appears to be in kgf/mm², about 373 MPa.
Source: IS 1570 (Part 2/Sec 1):1979, Edition 2.1 (Amendment 1, December 1989), Table 8
Active IS 1570 (Part 2/Sec 1):1979 14C6 Listings on M-EX (For Sale)