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IS 1570 (Part 7):1992 6Cr17Ni12Mo2H Steel: Specifications & Listings

IS 1570 (Part 7):1992 6Cr17Ni12Mo2H: 6Cr17Ni12Mo2H: steel for elevated temperature service (creep resisting steel). Specified in IS 1570 (Part 7):1992.

Category: Stainless Steel
Grade Details
GradeIS 1570 (Part 7):1992 6Cr17Ni12Mo2H
Standard IS 1570 (Part 7):1992
ApplicationsBoilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A959 SS316 ASTM A959:2011 USA 16 listings, 17 RFQs →
ASTM A959 316Ti ASTM A959:2011 USA No activity yet
ASTM A959 316Cb ASTM A959:2011 USA No activity yet
ASTM A959 316H ASTM A959:2011 USA No activity yet
ASTM A959 316N ASTM A959:2011 USA No activity yet
BS 970 (Part 3) 320S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 316S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 316S33 BS 970 (Part 3):1991 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 SS316 ASTM A959:2011 Strong Match
ASTM A959 316Ti ASTM A959:2011 Strong Match
ASTM A959 316Cb ASTM A959:2011 Strong Match
ASTM A959 316H ASTM A959:2011 Strong Match
ASTM A959 316N ASTM A959:2011 Strong Match
BS 970 (Part 3) 320S31 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 320S31 BS 970 (Part 1):1983 Strong Match
BS 970 (Part 3) 316S31 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 Mo
<=0.08 <=1.00 <=2.00 <=0.045 <=0.030 16.00-18.00 10.00-14.00 2.00-3.00
Mechanical Properties
Tensile Strength 510-710 MPa
Yield Strength >=205 MPa (0.2 % proof stress)
Elongation >=30%
Condition Pipes, bars, forgings, plates, Q, thickness - (first row of Table 3)

More data from IS 1570 (Part 7):1992

From the standard
Mechanical properties at room temperature 3 rows
ProductHeat treatmentThickness (mm)Hardness (RB)Rp0.2 min (MPa)Rm min (MPa)Rm max (MPa)Elongation min (%)KV (J)Bend test D max
Pipes, bars, forgings, platesQ--20551071030--
Pipes, bars, forgings, platesQover 3 to 40-20549069040--
Pipes, bars, forgings, platesQover 40 to 63-20549069035--
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, thickness100 deg C150 deg C200 deg C250 deg C300 deg C350 deg C400 deg C450 deg C500 deg C550 deg C600 deg C650 deg C700 deg C
Pipes, plates, bars, forgings, Q155144132121113107101899592908988
For guidance only.
Source: IS 1570 (Part 7):1992, Table 4

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