MANOIR INDUSTRIES
designation |
Nominal Composition % |
Additions |
Applications |
Main Features |
C |
Mn |
Si |
Ni |
Cr |
Co |
Austenitic Alloys |
18 - 9 |
0.25/0.40 |
0.70/1.25 |
1.00/1.75 |
9.5/11.5 |
18/21 |
|
Ti, Nb |
Tube sheet for petrochemical furnaces |
Oxidation resistance up to 800o
C (1472o
F) |
Manaurite 20 |
0.30/0.55 |
1.00/2.00 |
1.00/2.50 |
18/24 |
23/28 |
|
|
Reforming and ethylene cracking
tubes
Cast fittings and tube sheets |
Resistance to creep up to 980o
C (1800o
F) |
Manaurite 24/24 Nb |
0.25/0.50 |
0.50/1.50 |
0.50/2.00 |
23/25 |
23/25 |
|
Nb |
Reformer tubes and furnace parts |
Improved stress rupture, over HK 40. Better
ductility at operating temperature without impaired weldability
resistance to oxidation, carburization and thermal fatigue |
Manaurite 36X |
0.35/0.60 |
1.00/1.50 |
1.00/2.00 |
33/38 |
23/28 |
|
Nb |
Ammonia & methanol furnaces. Reforming and cracking
coils. |
High creep resistance and creep ductility. Good
carburization and oxidation resistance. Good weldability after ageing |
Manaurite 35 - 25 W |
0.35/0.60 |
0.70/1.25 |
1.00/2.00 |
33/38 |
21/28 |
|
W |
Ammonia & methanol furnaces. Reforming and cracking
coils. |
High carburization and oxidation resistance up to
1080o
C (1976o
F). Good creep strength and good creep strain rate |
Manaurite XM |
0.35/0.60 |
1.00/1.50 |
1.00/2.00 |
33/38 |
23/28 |
|
Nb, Ti, and others |
Ammonia & methanol furnaces. Reforming and cracking
coils. |
Superior creep resistance and creep ductility.
Improved carburization and oxidation resistance up to 1100o
C (2012o
F) |
Manaurite 40 X |
0.35/0.60 |
1.00/1.50 |
1.00/2.00 |
38/42 |
28/32 |
|
Nb, Ti, and others |
DRI radiation. Cracking coils. High carburizing and
metal dusting atmospheres |
Superior carburization and oxidation resistance
with very high creep strength and creep ductibility. Operating
temperature up to 1150o
C for carburization resistance. |
Manaurite XTM |
0.40/0.60 |
1.00/2.00 |
1.00/2.00 |
43/48 |
34/37 |
|
Nb, Ti, and others |
DRI radiation. Reforming and cracking coils. High
carburizing and metal dusting atmospheres |
Superior carburization and oxidation resistance.
High creep strength. Operating temperature up to 1160o
C (2120o
F) for cracking furnaces. Also reforming appliance-resistance to
contamination by heavy gas oil (S, Na, V) |
Manaurite 50W |
0.35/0.55 |
1.00/1.50 |
1.00/2.00 |
45/52 |
25/32 |
|
W |
Elbows in petrochemical furnaces. Tube sheets and
supports. Christmas tree supports. |
Operating at elevated temperatures in cracking
process. Very good resistance to oxidation up to 1200o
C (2192o
F). Excellent creep resistance |
Manaurite 50/50Nb |
0.05/0.10 |
0.30/0.50 |
0.70/1.00 |
48/52 |
48/52 |
|
Nb |
Tube sheet and tube supports |
Resistance to oxidation and fuel ash corrosion. |
Manaurite 75 |
0.15/0.30 |
0.70/1.25 |
1.00/2.00 |
65/76 |
14/19 |
|
|
Special petrochemical components |
Good agent ductility |
Manaurite 900 |
0.06/0.15 |
1.00/1.50 |
0.75/1.50 |
29/37 |
16/22 |
|
Nb |
For parts located outside furnaces e.g. reformer
furnace manifolds, transferlines, pyrolisys furnace crossovers |
Good creep strength. High thermal shock resistance.
Good ductility after ageing. Operating temperature up to 1000o
C (1832o
F) |
Manaurite 900B |
0.10/0.18 |
1.00/1.50 |
1.00/1.50 |
33/37 |
24/27 |
|
Nb |
Used at higher temperatures e.g. for parts inside
furnaces |
Similar properties to MAN.900 with higher oxidation
and carburization resistance : operating temperature exceeding 1000o
C (1832o
F) |
Austenitic Alloys with cobalt |
Manaurite 35K |
0.40/0.60 |
0.50/1.25 |
1.20/2.00 |
33/37 |
24/28 |
14/16 |
W |
Reformer tubes for petrochemical appliances at high
temperature Ammonia furnaces Tube sheets |
Withstands high temperature up to 1245o
C (2300o
F). Good resistance to hot corrosion |
Manaurite 50 W K |
0.40/0.55 |
0.50/1.50 |
1.00/1.75 |
47/49 |
27/29 |
2.5/3.5 |
W |
Similar to Manurite 50 W but used at higher
temperatures. Radiant tubes. Tube supports |
Improved creep resistance with respect to Manurite
50 W. Operating temperature up to 1200o
C (2192o
F). Good resistance to carburization. |
Austenitic Alloys with tungsten |
Manaure 2 |
0.15/0.40 |
0.50/1.50 |
<1.50 |
48/52 |
32/34 |
|
W : 12/14% |
Tube sheets and supports - furnace part Thermowells. |
Creep and oxidation resistance up to 1300o
C (2372o
F) |