IS 11169 (Part 1):2022 17Ni6Cr6 Steel: Specifications & Listings
IS 11169 (Part 1):2022 17Ni6Cr6: Cold heading quality alloy case hardening steel 17Ni6Cr6 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 in the annealed condition is 600 MPa. It can be ordered with hardenability requirements (H, HH or HL).
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
Ni
P
S
Si
0.14-0.20
1.40-1.70
<=0.25
0.50-0.90
1.40-1.70
<=0.025
<=0.025
<=0.30
Mechanical Properties
Hardness, ferrite-pearlite (+FP)
156-207 HB
Tensile Strength, annealed (+AC)
<=600 MPa (over 5 to 40 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 (%)
+AC
over 5 to 10
600
60
+AC
over 10 to 40
600
60
+AR+C+AC
2 (incl.) to 5
600
62
+AR+C+AC
over 5 to 10
580
62
+AR+C+AC
over 10 to 40
580
62
+AR+C+AC+LC
2 (incl.) to 5
640
60
+AR+C+AC+LC
over 5 to 10
620
60
+AR+C+AC+LC
over 10 to 40
620
60
+AC+C
over 5 to 10
720
57
+AC+C
over 10 to 40
710
57
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
Hardness in the delivery condition1 condition
Treated to ferrite-pearlite structure (+FP), over 5 to 40 mm
156 to 207 HB
Brinell hardness range for bars delivered treated to a ferrite-pearlite structure.
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
47
47
46
45
43
42
41
39
37
35
34
34
33
Minimum, HRC
39
38
36
35
32
30
28
26
24
22
21
20
20
Applies when ordered with the symbol H; otherwise for guidance only. Jominy test as per IS 3848, austenitizing at 870 ± 5 °C.
Source: IS 11169 (Part 1):2022, Table B.6
Restricted hardenability bands, HH and HL (HRC by distance from quenched end, mm)HH and HL ordering
Band
1.5
3
5
7
9
11
13
15
20
25
30
35
40
HH maximum
47
47
46
45
43
42
41
39
37
35
34
34
33
HH minimum
42
41
39
38
36
34
32
30
28
26
25
25
24
HL maximum
44
44
43
42
39
38
37
35
33
31
30
29
29
HL minimum
39
38
36
35
32
30
28
26
24
22
21
20
20
HH: the upper limit matches the H band upper limit; HL: the lower limit matches the H band lower limit. Austenitizing at 870 ± 5 °C.
Source: IS 11169 (Part 1):2022, Table B.7
Active IS 11169 (Part 1):2022 17Ni6Cr6 Listings on M-EX (For Sale)