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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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BS 316 S65 & S67
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Introduction:
These two grades are part of the family of 17%Cr 12-13%Ni
steels containing between 2 and 3% Mo (S316xx series).
These grades are nitrogen strengthened with 2.0-2.5%
Mo or 2.5-3.5%Mo. After 18Cr10Ni (304xx) type steels,
these 17Cr12NiMo (316xx) grades are the most widely
used austenitics. In the damp industrial or coastal
atmospheres of Europe, they perform better than 18Cr10Ni
(304xx) and ferritic grades. In low temperature seawater
they offer limited resistance to pitting but are susceptible
to crevice attack (mean
PREN about 25-27). Their short- and long-time properties
at elevated temperatures are also superior to those
of comparable 18Cr10Ni grades.
Metallurgy:
Conditions where the steels are not quickly
taken through the temperature range 900-500°C
(eg. slow cooling, heat-treatment, service exposure,
high heat input welding ) can allow precipitation
of chromium carbides and sometimes embrittling sigma
formation.
Where sensitization to intergranular corrosion around
these carbides is unacceptable, consideration should
be given to the low carbon (0.03%C max) grades and
to those stabilized with either Ti or Nb.
Composition:
| Element |
Minimum
(%) |
Maximum
(%) |
| Nickel
(S65) |
10.00 |
13.00 |
| Nickel
(S67) |
10.50 |
13.50 |
| Molybdenum
(S65) |
2.00 |
2.50 |
| Molybdenum
(S67) |
2.50 |
3.00 |
| Chromium |
16.50 |
18.50 |
| Nitrogen |
0.12 |
0.22 |
| Manganese |
- |
2.00 |
| Carbon |
- |
0.07 |
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Similiar Specifications:
ASTM UNS S31651 316N
16-18%Cr, 10-14%Ni, 2.0-3.0%Mo, 0.10-0.16%N, <2%Mn,
<0.08%C
BS 316S65
16.5-18.5%Cr, 10-13%Ni, 2.0-2.5%Mo, 0.12-0.22%N, <2%Mn,
<0.07%C
BS 316S67
16.5-18.5%Cr, 10.5-13.5%Ni, 2.0-3.0%Mo, 0.12-0.22%N,
<2%Mn, <0.07%C
JIS SUS 316N
16-18%Cr, 10-14%Ni, 2.0-3.0%Mo, 0.10-0.22%N, <2%Mn,
<0.08%C
Applications:
Architectural cladding, doors, windows and fittings
Street furniture
Offshore modules
Tanks and piping of chemical tankers
Production, storage and land-based transport of chemicals,foods and beverages
Pharmaceutical, synthetic fibre, paper and textile
industries
Pressure vessels, cryogenic equipment, high temperature
plant.
Product Forms:Plate,sheet
& strip
ASTM UNS S31651
316N 240, 480, 666
JIS SUS 316N 4304, 4305, 4307
Bar & long products
ASTM UNS S31651
316N 276, 479, 484
BS 316S65 1502
BS 316S67 1502
JIS SUS 316N 4303
Forgings & others
ASTM UNS S31651
316N 182, 403, 744
Tube
ASTM UNS S31651
316N 213, 249, 688
Pipe
ASTM UNS S31651
316N 312, 358, 376, 430, 530, 813, 814
General
BS 316S65 5500
BS 316S67 5500
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Page Last Modified: 7/04/06 17:38
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