IS 11169 (Part 1):2022 20Ni8Cr2Mo3 Steel: Specifications & Listings
IS 11169 (Part 1):2022 20Ni8Cr2Mo3: Cold heading quality alloy case hardening steel 20Ni8Cr2Mo3 to IS 11169 (Part 1):2022, for parts case hardened after cold heading or cold extrusion, supplied as wire rod, bars or wire of 2 to 100 mm. Maximum tensile strength cold drawn and annealed is 680 MPa. It can be ordered with hardenability requirements (H).
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cr
Cu
Mn
Mo
Ni
P
S
Si
0.17-0.23
0.35-0.65
<=0.25
0.40-0.70
0.20-0.30
1.60-2.00
<=0.025
<=0.025
<=0.30
Mechanical Properties
Tensile Strength, cold drawn and annealed (+AR+C+AC)
<=680 MPa (over 5 to 25 mm)
More data from IS 11169 (Part 1):2022
From the standard
Other composition limitsfrom the table notes and clauses
Values
Maximum unless a range is given (ladle analysis)
Ordered with hardenability
Small deviations from these limits are allowed (not for sulphur and phosphorus): up to 0.01 percent for carbon and the Table 1 values for other elements
Deoxidation
Aluminium killed (clause 6.2)
Elements not listed are not added intentionally without the purchaser's agreement, except those used to finish the heat.
Source: IS 11169 (Part 1):2022, Table B.2 and its notes, clause 6.2
Tensile strength and reduction of area by delivery conditionby delivery condition and size
Delivery condition
Diameter (mm)
Tensile strength, max (MPa)
Reduction of area, min (%)
+AR+C+AC
over 5 to 10
680
60
+AR+C+AC
over 10 to 25
680
60
+AC+C
over 5 to 10
700
55
+AC+C
over 10 to 25
700
55
Codes: +AR as hot rolled, +PE peeled, +C cold drawn, +AC annealed to spheroidized carbides, +LC skin passed. For non-circular sections the properties are agreed between manufacturer and purchaser. Table B.5 heads the reduction of area columns for +AR+C+AC+LC and +AC+C as maximum; they are shown here as minimum, like every other table of the standard.
Source: IS 11169 (Part 1):2022, Table B.5
Hardenability, end quench test (H)Hardness band
Hardness band (HRC, minimum to maximum) by distance from the quenched end (mm)
1.5
3
5
7
9
11
13
15
20
25
30
35
40
Distance from quenched end (mm)
1.5
3
5
7
9
11
13
15
20
25
30
35
40
Maximum, HRC
48
47
45
42
39
36
34
32
29
26
25
24
24
Minimum, HRC
40
38
34
30
27
25
23
22
20
-
-
-
-
Applies when ordered with the symbol H; otherwise for guidance only. Jominy test as per IS 3848, austenitizing at 900 ± 5 °C.
Source: IS 11169 (Part 1):2022, Table B.6
Active IS 11169 (Part 1):2022 20Ni8Cr2Mo3 Listings on M-EX (For Sale)