MATERIALS OF CONSTRUCTION


Nitin manufactures castings in all grades of Heat and Corrosion resistant alloy steels, as well as in special alloys developed specifically for particular applications.

Some of these grades are given below :

 
NITIN'S
COMPOSITION
EQUIVALENT SPECN.
GRADE
C
Cr
Ni
Mn
Max
Si
Max
Mo
Max
IS4522
ASTM A297
NHC
0.5 max
26.0 -
30.0
4.0 max
1.0
2.0
0.5max
-
HC
NHD
0.5 max
26.0-
30.0
4.0-
7.0
1.5
2.0
0.5
GRADE 4
HD
NHE
0.2-0.5
26.0
30.0
8.0
11.0
2.0
2.0
0.2
GRADE 6
HE
NHF
0.2-0.4
18.0
23.0
8.0
12.0
2.0
2.0
0.5
GRADE 5
HF
NHH1
0.2-0.5
24.0
28.0
11.0
14.0
2.0
2.0
0.5
GRADE 7
HH
NHK
0.2-0.6
24.0
28.0
18.0
22.0
2.0
2.0
0.5
GRADE 9
HK
NHL
0.2-0.6
28.0
32.0
18.0
22.0
2.0
2.0
0.5
GRADE 10
HL
NHN
0.2-0.5
19.0
23.0
23.0
27.0
2.0
2.0
0.5
GRADE 11
HN
NHT
0.35-0.75
15.0
19.0
33.0
37.0
2.0
2.5
0.5
GRADE 12
HT
NHU
0.35-0.75
17.0
21.0
37.0
41.0
2.0
2.5
0.5
GRADE 13
HU
NHX
0.35-0.75
15.0
19.0
64.0
68.0
2.0
2.5
0.5
GRADE 14
HX

Corrsion-Resistant Cast Steels

NITIN'S
COMPOSITION %
EQUIVALENT GRADES
GRADE
C(Max)
Ni
Cr
Mo
Mn
Max
Si
Max
Other
Elements
INDIAN
IS-3444
AMERICAN
ASTM A743
NCA-1
0.15
1.0Max
11.5-14.0
0.5Max
1.0
1.5
-
GRADE 10
CA-15
NCA-2
0.2-0.4
1.0Max
11.5-14.0
0.4-1.0
1.0
1.0
-
GRADE 14
CA-40
NCA-3
0.06
3.5-4.5
11.5-14.0
0.4-1.0
1.0
1.0
-
GRADE 24
CA-6NM
NCF-2b
0.08
8.0-11.0
18.0-21.0
2.0-3.0
1.5
2.0
-
GRADE 1
CF-8
NCF-3b
0.08
9.0-12.0
18.0-21.0
2.0-3.0
1.5
2.0
-
GRADE 4
CF-8M
NCF-4a
0.03
8.0-12.0
17.0-21.0
-
1.5
2.0
-
GRADE 15
CF-3
NCF-4b
0.03
9.0-13.0
17.0-21.0
2.0-3.0
1.5
1.5
-
GRADE 16
CD-3M
NCN
0.07
27.5-30.5
19.0-22.0
2.0-3.0
1.5
1.5
Cu-3.0-4.0
GRADE 18
CN-7M
NCD3a
0.03
4.5-6.5
21.0-23.5
2.5-3.5
1.5
1.0
Cu=1.0 max,
N=0.1 to 0.3
-
A-890 4A
NCD3b
0.03
6.5-8.5
24.0-26.0
3.0-4.0
1.5
1.0
Cu=0.5-2.0
N=0.2-0.3
W=0.5-1.0
-
A-890-6A
NCE
0.03
6.0-8.0
24.0-26.0
4.0-5.0
1.5
1.0
N=0.1-0.3
-
A890-5A
NCD4
0.04
4.7-6.0
24.5-26.5
1.7-2.3
1.0
1.0
Cu=2.7-3.3
N=0.1-0.25
-
A890-1B

Special Heat-Resisting Alloys

NITIN'S
CHEMICAL COMPOSITION (NOMINAL %)
EQUIVALENT
GRADE
C
Si
Mn
Cr
Ni
Others
Grade
NHK-40
0.40
1.30
1.30
25.0
20.0
-
ASTM A351/
608 HK-40
N-24/24Nb
0.30
0.80
1.30
24.0
24.0
Nb=1.50
IN-519
N25/35
0.40
1.30
1.30
25.0
35.0
-
HP-40
N25/35NB
0.40
1.30
1.30
25.0
35.0
Nb=1.00
HP-40Nb
N25/35Nb
Mod,
0.43
1.30
1.30
25.0
35.0
Nb=1.00 +
OTHERS
HP-40Nb
(MICRO ALLOYED)
N25/35WNB
0.45
1.80
1.30
25.0
35.0
W+Nb
-
N20/32Nb
0.10
1.20
1.30
20.0
32.0
Nb-0.90
CAST ALLOY 800H
N28/48W
0.50
1.50
1.50
28.0
48.0
W=5.0
ALLOY 22H
N28/48W
SUPER
0.50
1.25
1.50
27.0
48.0
Co 2.5/4.0
ALLOY 22H SUPER
N29/35WCo
0.50
1.50
1.20
29.0
35.0
W-5.0
Co=15.0
SUPER THERM
N50/50Nb
0.10
0.5
0.3
50.0
BAL.
Nb=1.5
IN-657
(ASTM A560)
N35/45Nb
0.40
1.0
1.30
35.0
45.0
Nb=1.0
-
N35/45Nb
MOD.
0.43
1.60
1.30
35.0
45.0
Nb=1.00+
OTHERS
-
UMCO-50
0.2
1.3
0.8
28.0
-
Co-50.0
-
UMCO-51
0.3
1.0
0.8

28.0

-
Co=50.0
Nb-2.0
-
 
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