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IS 1570 (Part 5):1985 X04Cr25Ni20 Steel: Specifications & Listings

IS 1570 (Part 5):1985 X04Cr25Ni20: X04Cr25Ni20: high alloy, stainless or heat-resisting steel. Specified in IS 1570 (Part 5):1985.

Category: Stainless Steel
Grade Details
GradeIS 1570 (Part 5):1985 X04Cr25Ni20
Standard IS 1570 (Part 5):1985
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A240/A240M S31008 ASTM A240/A240M:2025 USA No activity yet
ASTM A959 310S ASTM A959:2011 USA No activity yet
ASTM A959 310Cb ASTM A959:2011 USA No activity yet
ASTM A240/A240M S31040 ASTM A240/A240M:2025 USA No activity yet
ASTM A276/A276M S31000 ASTM A276/A276M:2017 USA No activity yet
BS 970 (Part 3) 310S31 BS 970 (Part 3):1991 UK No activity yet
ASTM A959 310H ASTM A959:2011 USA No activity yet
ASTM A959 310HCb ASTM A959:2011 USA No activity yet
ASTM A959 310HCbN ASTM A959:2011 USA No activity yet
ASTM A240/A240M S31009 ASTM A240/A240M:2025 USA No activity yet
ASTM A240/A240M S31041 ASTM A240/A240M:2025 USA No activity yet
ASTM A276/A276M S31400 ASTM A276/A276M:2017 USA No activity yet
EN 10088-1 X6CrNi25-20 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X8CrNi25-21 EN 10088-1:2023 Europe (CEN) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A240/A240M S31008 ASTM A240/A240M:2025 Strong Match
ASTM A276/A276M S31008 ASTM A276/A276M:2017 Strong Match
ASTM A959 310S ASTM A959:2011 Strong Match
ASTM A959 310Cb ASTM A959:2011 Strong Match
ASTM A240/A240M S31040 ASTM A240/A240M:2025 Strong Match
ASTM A276/A276M S31040 ASTM A276/A276M:2017 Strong Match
ASTM A276/A276M S31000 ASTM A276/A276M:2017 Strong Match
BS 970 (Part 3) 310S31 BS 970 (Part 3):1991 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 Si Mn P S Cr Ni
<=0.08 <=1.5 <=2.0 <=0.045 <=0.030 24.0-26.0 19.0-22.0
Mechanical Properties
Tensile Strength >=515 MPa
Yield Strength >=205 MPa (0.2 % proof stress)
Elongation >=40% (50 mm)
Hardness <=217 HB; <=95 HRB
Condition Annealed, quenched or solution treated plates, sheets and strips (Table 2)

More data from IS 1570 (Part 5):1985

From the standard
Annealed, quenched or solution treated plates, sheets and strips 5 properties
Tensile strength, min
515 MPa
0.2 % proof stress, min
205 MPa
Elongation in 50 mm, min
40%
Brinell hardness, max
217 HB
Rockwell B hardness, max
95 HRB
Source: IS 1570 (Part 5):1985, Table 2
Annealed, quenched or solution treated bars and flats 4 properties
Tensile strength, min
517 MPa
0.2 % proof stress, min
207 MPa
Elongation in 50 mm, min
40%
Reduction of area, min
50%
Source: IS 1570 (Part 5):1985, Table 3
Recommended heat treatment 2 entries
Solution treatment (softening) temperature
1000 to 1150 deg C
Solution treatment quenching medium
water, oil, air
A annealing, S softening, ST solution treatment, Q quenching, T tempering, P patenting.
Source: IS 1570 (Part 5):1985, Table 7

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