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IS 6911:1992 X04Cr18Ni10Ti Steel: Specifications & Listings

IS 6911:1992 X04Cr18Ni10Ti: Austenitic stainless steel X04Cr18Ni10Ti (numerical symbol 321) to IS 6911:1992 (reaffirmed 1998), made as plate, sheet and strip and normally supplied solution annealed and descaled. Minimum tensile strength annealed is 490 MPa with 0.2% proof stress of 210 MPa.

Category: Stainless Steel
Grade Details
GradeIS 6911:1992 X04Cr18Ni10Ti
Standard IS 6911:1992
ApplicationsStainless and heat-resisting steel plate, sheet and strip (clause 1.1)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
IS 1570 (Part 5) X04Cr18Ni10Ti IS 1570 (Part 5):1985 India No activity yet
IS 11169 (Part 2) X04Cr18Ni10Ti IS 11169 (Part 2):1989 India No activity yet
IS 11169 (Part 2) X04Cr18Ni10Ti IS 11169 (Part 2):2023 India No activity yet
ASTM A959 308 ASTM A959:2011 USA No activity yet
ASTM A959 321 ASTM A959:2011 USA No activity yet
ASTM A959 347 ASTM A959:2011 USA No activity yet
ASTM A959 348 ASTM A959:2011 USA No activity yet
BS 970 (Part 3) 304S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 321S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 347S31 BS 970 (Part 3):1991 UK No activity yet
EN 10088-1 X6CrNiTi18-10 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X6CrNiNb18-10 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X8CrNiTi18-10 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X7CrNiNb18-10 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X6CrNiTiB18-10 EN 10088-1:2014 Europe (CEN) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 6911 X04Cr18Ni10Nb IS 6911:1992 Strong Match
ASTM A959 347 ASTM A959:2011 Strong Match
BS 970 (Part 3) 321S31 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 3) 347S31 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 321S31 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 1) 347S31 BS 970 (Part 1):1983 Strong Match
EN 10088-1 X6CrNiTi18-10 EN 10088-1:2014 Strong Match
EN 10088-1 X6CrNiNb18-10 EN 10088-1:2014 Strong Match
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Cr Mn Ni P S Si Ti
<=0.08 17.0-19.0 <=2.0 9.0-12.0 <=0.045 <=0.030 <=1.0 >=5x(C+N), <=0.8
Mechanical Properties
Bend Test (180 deg) Not required
Elongation (50 mm, annealed) >=35%
Hardness (annealed, max) 192 HBS, 95 HRB
Tensile Strength (annealed) >=490 MPa
Yield Strength (0.2% proof, annealed) >=210 MPa

More data from IS 6911:1992

From the standard
Other composition limits from Table 1 and its note
Steel type
Austenitic
Numerical symbol (ISS)
321
Values
Maximum unless a range is given (ladle analysis)
Element not specified, Titanium, max
0.10
Element not specified, Niobium, max
0.20
Element not specified, Molybdenum, max
0.70
Element not specified, Copper, max
0.50
Elements not listed in Table 1 are not added to the steel except to finish the heat, and then only within the limits shown. Table 4 prints the name as X 04Cr10Ni10Ti.
Source: IS 6911:1992, Table 1 and its note
Recommended heat treatment Table 3
TreatmentTemperature (deg C)Cooling medium
Softening (solution annealing), S1 000 to 1 120water or oil or air
Recommended heat treatment (clause 8.3). Austenitic steels are supplied solution annealed and descaled; ferritic and martensitic steels annealed and descaled, unless agreed otherwise.
Source: IS 6911:1992, Table 3

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