Materials
Engine Valve Types & Features
Size Range
|
SAE |
BS |
JS |
Wr. No. |
C |
Si |
Mn |
Ni |
Cr |
Mo |
N |
INTAKE & LIGHT DUTY EXHAUST |
SIL1 |
EN 52 |
SUH 1 |
1,4718 |
0.40-0.50 |
3.00-3.50 |
0.60-MAX |
0.60-MAX |
7.50-9.50 |
-- |
-- |
-- |
-- |
SUH 3 |
-- |
0.35-0.45 |
1.80-2.50 |
0.60-MAX |
0.60-MAX |
10.00-12.00 |
0.70-1.30 |
-- |
|
-- |
-- |
SUH 11 |
-- |
0.45-0.55 |
1.00-2.00 |
0.60-MAX |
0.60-MAX |
7.50-9.50 |
-- |
-- |
|
EXHAUST |
EV-12 |
12-2 N |
-- |
14,875 |
0.50-0.60 |
0.08-0.25 |
7.00-9.50 |
1.50-2.75 |
19.25-21.50 |
-- |
0.20-0.40 |
EV-8 |
21-4 N |
SUH 35 |
14,871 |
0.48-0.58 |
0.35 MAX |
8.00-10.00 |
3.25-4.50 |
20.0-22.50 |
-- |
0.35-0.50 |
|
EV-15 |
23-8 N |
-- |
-- |
0.28-0.38 |
0.50-1.00 |
1.50-3.50 |
7.00-9.50 |
22.00-24.00 |
-- |
0.25-0.40 |
|
EV-4 |
21-12 N |
SUH 37 |
-- |
0.15-0.25 |
1.00 MAX |
1.00-1.60 |
10.00-12.00 |
20.50-22.50 |
-- |
0.15-0.35 |
|
INCONEL-751 |
0.10 MAX |
0.50 MAX |
1.00 MAX |
BAL |
14.0-17.0 |
Ti/AL 2.2/1.0 |
FE 7.0 |
||||
NIMONIC-80A |
0.10 MAX |
1.00 MAX |
1.00 MAX |
BAL |
18.0-21.0 |
Ti/AL 2.0/1.5 |
FE/CO 5.0/2.0 MAX MAX |
|
C |
CR |
W |
FE |
CO |
|
|
STELLITE #1 |
2.5 |
30.0 |
12.0 |
3.0 MAX |
BAL |
HRC- |
50/54 |
STELLITE #6 |
1.00 |
28.0 |
4.0 |
3.0 MAX |
BAL |
HRC- |
40/44 |
STELLITE #12 |
1.35 |
29.0 |
8.0 |
2.0 MAX |
BAL |
HRC- |
45/47 |
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