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
Cr
Ni
Mo
Cu
<=0.20
0.10-0.35
0.40-1.20
<=0.03
<=0.03
<=0.25
<=0.30
<=0.10
<=0.30
Mechanical Properties
Tensile Strength
360-480 MPa
Yield Strength
>=205 MPa (0.2 % proof stress)
Elongation
>=26%
Condition
Plate, N, thickness over 3 to 16 (first row of Table 3)
More data from IS 1570 (Part 7):1992
From the standard
Mechanical properties at room temperature5 rows
Product
Heat treatment
Thickness (mm)
Hardness (RB)
Rp0.2 min (MPa)
Rm min (MPa)
Rm max (MPa)
Elongation min (%)
KV (J)
Bend test D max
Plate
N
over 3 to 16
-
205
360
480
26
-
0.5a
Plate
N
over 16 to 40
-
195
360
480
26
-
0.5a
Plate
N
over 40 to 63
-
185
360
480
25
-
0.5a
Plate
N
over 63 to 100
-
175
360
480
24
-
0.5a
Plate
N
over 100 to 150
-
170
360
480
24
-
0.5a
Rm and elongation printed once for a group of thickness rows are repeated on each row; Rp0.2 'Note 8' is printed as in the standard; in case of dispute the tensile strength value is deciding.
Source: IS 1570 (Part 7):1992, Table 3
0.2 % proof stress at elevated temperature (guidance only)Rp0.2 min in MPa
Product, heat treatment, thickness
150 deg C
200 deg C
250 deg C
300 deg C
350 deg C
400 deg C
Plate, N, 3 to 16 mm
172
168
150
124
117
115
Plate, N, over 16 to 40 mm
169
162
144
124
117
115
Plate, N, over 40 to 63 mm
158
152
141
124
117
115
Plate, N, over 63 to 100 mm
148
144
136
124
117
115
For guidance only.
Source: IS 1570 (Part 7):1992, Table 4
Heat treatment4 entries
Normalising temperature
900 to 930 deg C
Normalising time
1 to 2 min per 1 mm
Normalising cooling
in quiet air
Stress relief or tempering after bending or welding
600 to 650 deg C, 2 min per 1 mm
Indications are for guidance only except where test samples are reference heat treated; stress relief temperature should be at least 30 deg C below the tempering temperature.
Source: IS 1570 (Part 7):1992, Table 5
Active IS 1570 (Part 7):1992 Fe360H Listings on M-EX (For Sale)