Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
0.10-0.18
0.05-0.30
1.20-1.50
<=0.060
0.10-0.18
Mechanical Properties
Tensile Strength
440-540 MPa
Elongation
>=22%
Condition
Hot rolled or normalized bars, billets and forgings (Table 2), ruling sections up to 150 mm
More data from IS 1570 (Part 3):1979
From the standard
Tensile limits, hot rolled or normalized bars, billets and forgingsruling sections up to 150 mm
Tensile strength
440 to 540 MPa
Elongation, min (gauge length 5.65 sqrt(A))
22%
Where a minimum yield stress is required, 55 percent of the minimum tensile strength should be satisfactory.
Source: IS 1570 (Part 3):1979, Table 2
Tensile limits, cold drawn bars4 size ranges
Size (mm)
Tensile strength, min (MPa)
Elongation, min (%)
up to 20
550
10
over 20 to 40
520
11
over 40 to 63
480
12
over 63
440
15
Source: IS 1570 (Part 3):1979, Table 3
Properties of core, case hardened bars and forgings1 section
Limiting ruling section (mm)
Tensile strength, min (MPa)
Elongation, min (%)
Izod impact, min (J)
30
600
17
41
Source: IS 1570 (Part 3):1979, Table 5
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