IS 1570 (Part 5):1985 X20Cr21Ni12N Steel: Specifications & Listings

IS 1570 (Part 5):1985 X20Cr21Ni12N: X20Cr21Ni12N: high alloy, stainless or heat-resisting steel. Specified in IS 1570 (Part 5):1985.

Category: Stainless Steel
Grade Details
GradeIS 1570 (Part 5):1985 X20Cr21Ni12N
Standard IS 1570 (Part 5):1985
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 308 ASTM A959:2011 Close Alternative
ASTM A276/A276M S30800 ASTM A276/A276M:2017 Close Alternative
IS 11169 (Part 2) X04Cr19Ni10 IS 11169 (Part 2):1989 Close Alternative
ASTM A959 S30815 ASTM A959:2011 Close Alternative
ASTM A276/A276M S30815 ASTM A276/A276M:2017 Close Alternative
ASTM A959 305 ASTM A959:2011 Close Alternative
ASTM A276/A276M S30500 ASTM A276/A276M:2017 Close Alternative
EN 10088-1 X9CrNiSiNCe21-11-2 EN 10088-1:2014 Close Alternative
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
0.15-0.25 0.75-1.25 <=1.5 <=0.045 <=0.035 20.0-22.0 10.5-12.5
Mechanical Properties
Hardness <=302 HB
Condition Valve steel, hardened and tempered (Table 6)

More data from IS 1570 (Part 5):1985

From the standard
Hardness, valve steels, hardened and tempered valve steels
Hardness
302 max HB
Source: IS 1570 (Part 5):1985, Table 6
Recommended heat treatment 3 entries
Solution treatment temperature (ST+P)
1100 to 1200 deg C
Solution treatment quenching medium
oil, water
Patenting/ageing temperature
700 to 800 deg C
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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