IS 1570 (Part 7):1992 11Cr17Ni13W3TiH Steel: Specifications & Listings
IS 1570 (Part 7):1992 11Cr17Ni13W3TiH: 11Cr17Ni13W3TiH: steel for elevated temperature service (creep resisting steel). Specified in IS 1570 (Part 7):1992.
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
W
Ti
B
0.07-0.15
<=1.00
<=1.00
<=0.045
<=0.030
15.5-17.50
12.00-14.50
2.5-3.5
>=4xC, <=0.80
<=0.0006
Mechanical Properties
Tensile Strength
600-800 MPa
Yield Strength
>=390 MPa (0.2 % proof stress)
Elongation
>=25%
Condition
Bars, forgings, pipes, hot cold worked, thickness up to 60 (first row of Table 3)
More data from IS 1570 (Part 7):1992
From the standard
Mechanical properties at room temperature2 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
Bars, forgings, pipes
hot cold worked
up to 60
175-235
390
600
800
25
55
-
Bars, forgings, pipes
S+P
up to 100
-
220
500
730
35
70
-
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
100 deg C
200 deg C
300 deg C
400 deg C
450 deg C
500 deg C
550 deg C
600 deg C
Pipes, bars, forgings, hot cold worked
383
373
324
275
250
226
197
167
Pipes, bars, forgings, S+P
210
195
176
157
155
152
143
137
For guidance only.
Source: IS 1570 (Part 7):1992, Table 4
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