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
0.95-1.20
<=1.0
<=1.0
<=0.045
<=0.030
16.0-18.0
<=0.50
<=0.75
Mechanical Properties
Hardness
<=269 HB
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 strips1 properties
Brinell hardness, max
269 HB
Source: IS 1570 (Part 5):1985, Table 2
Annealed, quenched or solution treated bars and flats1 properties
Brinell hardness, max
269 HB
Source: IS 1570 (Part 5):1985, Table 3
Hardness, cutlery steels, quenched and temperedcutlery steels
Hardness, min
660 HV
Hardness, min
58 HRC
Bars, flats, sheets and strips.
Source: IS 1570 (Part 5):1985, Table 5
Recommended heat treatment5 entries
Annealing temperature
780 to 880 deg C
Annealing cooling medium
furnace
Hardening temperature (Q+T)
1000 to 1050 deg C
Hardening quenching medium
oil, air
Tempering temperature
100 to 250 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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