IS 1570 (Part 4):1988 30Ni16Cr5 Steel: Specifications & Listings
IS 1570 (Part 4):1988 30Ni16Cr5: 30Ni16Cr5: alloy steel (constructional or spring group) with specified chemical composition. Specified in IS 1570 (Part 4):1988.
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
Ni
Cr
0.26-0.34
0.10-0.35
0.40-0.70
3.90-4.30
1.10-1.40
Mechanical Properties
Tensile Strength
>=1540 MPa
Yield Strength
>=1240 MPa (0.2 % proof stress)
Elongation
>=8%
Izod Impact
>=14 J
Hardness
>=444 HBS (guidance only)
Condition
Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 150 (oil hardened) mm
More data from IS 1570 (Part 4):1988
From the standard
Properties, hardened and tempered1 strength levels
Limiting ruling section (mm)
Tensile strength (MPa)
0.2 % proof stress, min (MPa)
Elongation, min (%)
Izod impact, min (J)
Brinell hardness (HBS)
150 (oil hardened)
>=1540
1240
8
14
>=444
Bars and forgings, oil hardened unless stated; hardness is for guidance only.
Source: IS 1570 (Part 4):1988, Table 4
Tensile limits, tubes3 conditions
Condition
Tensile strength, min (MPa)
0.2 % proof stress, min (MPa)
Hardened and tempered
1090
890
Hardened and tempered
1190
1090
Hardened and tempered
1290
1090
Elongation printed as 9 310 over actual tensile strength (MPa).
Source: IS 1570 (Part 4):1988, Table 11
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