IS 1570 (Part 2/Sec 1):1979 10C4 Steel: Specifications & Listings
IS 1570 (Part 2/Sec 1):1979 10C4: Unalloyed carbon steel designated 10C4 in IS 1570 (Part 2/Sec 1):1979, with carbon <=0.15% and manganese 0.30-0.60%. Old designation C10. The standard was reaffirmed in 2004.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Mn
<=0.15
0.30-0.60
Mechanical Properties
Tensile Strength
340-420 MPa
Elongation
>=26%
More data from IS 1570 (Part 2/Sec 1):1979
From the standard
Cold-drawn bars, tensile by size4 size ranges
Size (mm)
Tensile strength, min (MPa)
Elongation, min (%)
Up to 20
490
11
Over 20 to 40
450
13
Over 40 to 63
410
15
Over 63
360
18
Source: IS 1570 (Part 2/Sec 1):1979, Edition 2.1 (Amendment 1, December 1989), Table 3
Core properties after case hardeningrefined and quenched
Tensile strength, min (MPa)
Elongation, min (%)
Izod impact, min (J)
Limiting ruling section (mm)
500
17
55
15
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
Mild steel sheet and strip1 condition
Condition
Tensile strength (MPa)
Elongation, min (%)
Cold rolled and annealed
320 to 400
28
Elongation on a test piece 12.5 mm wide, gauge length 50 mm.
Source: IS 1570 (Part 2/Sec 1):1979, Edition 2.1 (Amendment 1, December 1989), Table 6
Active IS 1570 (Part 2/Sec 1):1979 10C4 Listings on M-EX (For Sale)