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| Mailing Address |
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UKF Stainless Ltd
12 Buntsford Park Road
Bromsgrove
Worcestershire
B60 3DX
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| Telephone / Fax |
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| Tel: |
01527 578686 |
| Fax: |
01527 837792 |
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| Email |
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 info@ukfstainless.co.uk |
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N08800
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Introduction:
The alloy has good resistance to high temperature
oxidation, carburization, nitriding and steam and
is relatively free from stress corrosion cracking.
It has good resistance to cold flowing seawater, but
is subject to crevice attack (PREN about 32.5). This
alloy is ductile and tough at -253°C. It is not
significantly embrittled by prolonged exposure at
temperatures associated with sigma formation but some
sensitization can occur - for example, an impact value
of 135J after 1500 hours at 760°C is quoted.
Metallurgy:
The chromium content is balanced by sufficient nickel
to maintain a tough austenitic structure. Nickel-aluminium
and nickel-titanium precipitates strengthen the alloy
during prolonged exposure to high
temperatures. The high nickel content aids its good
resistance to high temperature oxidation, carburization,
nitriding and relative freedom from stress corrosion
cracking.
Composition:
| Element |
Minimum
(%) |
Maximum
(%) |
| Chromium |
19.00 |
23.00 |
| Nickel |
30.00 |
35.00 |
| Aluminium |
0.15 |
0.60 |
| Manganese |
- |
1.50 |
| Carbon |
- |
0.10 |
| Copper |
- |
0.75 |
| Titanium |
0.15 |
0.60 |
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Similiar Specifications:
ISO 2604 69
19-23%Cr, 30-35%Ni, 0.15-0.60%Al, <2%Mn,
<0.12%C, 0.15-0.60%Ti
ISO 4955 H18
EURONORM X10 NiCrAlTi
32 20
19-23%Cr, 30-34%Ni, 0.15-0.60%Al, <2%Mn, <0.12%C,
0.15-0.60%Ti
ASTM UNS N08800
19-23%Cr, 30-35%Ni, 0.15-0.60%Al, <1.5%Mn, <0.10%C,
<0.75%Cu, 0.15-0.60%Ti
BS NA15
19-23%Cr, 30-35%Ni, 0.15-0.60%Al, <1.5%Mn, <0.10%C,
<0.75%Cu, 0.15-0.60%Ti
DIN/SEW X10
NiCrAlTi 32 20 1.4876
19-23%Cr, 30-34%Ni, 0.15-0.60%Al, <2%Mn, <0.12%C,
0.15-0.60%Ti
JIS NCF 800
19-23%Cr, 30-35%Ni, 0.15-0.60%Al, <1.5%Mn, <0.10%C,
<0.75%Cu, 0.15-0.60%Ti
Applications:
Heat exchangers and piping in petro-chemical plant
where resistance to stress corrosion cracking is
required.
Heat-treating equipment, baskets, etc. Sheathing for
electric heating elements.
Paper pulp plant.
Steam generators, superheater and water heater equipment
in power stations.
Bellow expansion joints
Product Forms:
Plate,sheet & strip
ISO 2604 /4 P69
ASTM
UNS N08800 B409
BS NA15 3072, 3073
JIS NCF 800 4902
Bar & long products
ASTM
UNS N08800 B408
BS NA15 3075, 3076
JIS NCF 800 4901
Forgings & others
ASTM UNS N08800
B366
Tube and/or pipe
ISO 2604 /2 TS69, /5 TW69
BS NA15 3074
JIS NCF 800 4904, 4903
ASTM UNS N08800
B407, B515, B163
Pipe
ASTM UNS N08800
B514, B407
General
ISO 4955 H18
EURONORM X10
NiCrAlTi 32 20 95-79
BS NA15 5500
DIN/SEW X10
NiCrAlTi 32 20 1.4876
SEW470
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Page Last Modified: 7/04/06 17:43
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