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X5 CrNi 18 10
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Introduction:
This is the world's most popular stainless steel.
It has an economic balance of alloying elements to
ensure its good cold formability, corrosion resistance,
toughness and good mechanical properties with no excessive
work-hardening. It performs well in unpolluted atmospheres
but can tarnish or lightly rust in damp atmospheres
around some industrial and coastal/marine locations.
The steel has been used extensively for potable water
tubing and in fresh feedwater systems where precautions
are taken to avoid crevice attack under deposits,
etc. Performance in aerated seawater is not good without
adequate galvanic or cathodic protection. Its PREN
is low: 18-23.
Stability and toughness at cryogenic temperatures
is high. Readily weldable, but a low carbon grade
S30403 or similar is preferred
for better corrosion resistance of weldments.
Metallurgy:
The overall composition of the S304xx type alloys
balance the ferrite-forming elements (Cr,Mo,Si) with
sufficient Ni,Mn,C and N to promote stable austenite
and prevent martensite formation.
Composition:
| Element |
Minimum
(%) |
Maximum
(%) |
| Chromium |
17.00 |
19.00 |
| Nickel |
8.00 |
11.00 |
| Manganese |
- |
2.00 |
| Carbon |
- |
0.07 |
|
Similiar Specifications:
ISO 2604 47 / ISO 683/13 11
17-19%Cr, 8-11%Ni, <2%Mn, <0.07%C
EURONORM X5 CrNi 18 10
17.0-19.0%Cr, 8.0-11.0%Ni, <2.0%Mn, <0.07%C
ASTM UNS S30400 304
18-20%Cr, 8-10.5%Ni, <0.10%N, <2.0%Mn, <0.08%C
BS 304S31
17-19%Cr, 8-11%Ni, <2%Mn, <0.07%C
DIN X5 CrNi 18 10 1.4301
17-19%Cr, 8.5-10.5%Ni, <2%Mn, <0.07%C
JIS SUS 304
18-20%Cr, 8-10.5%Ni, <2%Mn, <0.08%C
Applications:
Food manufacture and catering equipment,
Plant for production, storage and transport of milk,
beer, wine and other beverages.
Kitchenware and tableware, Tubing and rolled or drawn
sections, Architectural cladding, Doors
and window frames.
Product Forms:
Plate, Sheet and Strip
ISO 2604 /4 P47
EURONORM X5 CrNi 18 10 88-86/2, 88-86/3, 141-79
ASTM UNS S30400
304 167, 240, 480, 666
BS 304S31 1449/2, 1501/3
DIN X5 CrNi 18
10 1.4301 17440, 17441
JIS SUS 304 4304, 4305, 4307
Bar and Long Products
EURONORM X5 CrNi 18 10 88-86/1
ASTM UNS S30400
304 276, 479, 484
BS 304S31 970/1, 1502
DIN X5 CrNi 18
10 1.4301 17440
JIS SUS 304 4303, 4308, 4318, 4311
Forgings and Others
ISO 2604 /1 F47
EURONORM X5 CrNi 18 10 88-86/1, 119-74
ASTM UNS S30400
304 314, 473, 484, 182, 403
BS 304S31 970/1, 1503
DIN X5 CrNi 18
10 1.4301 17440
JIS SUS 304 3214, 4319
Tube and/or Pipe
ISO 2604 /2 TS47, /5 TW47
BS 304S31 3605
DIN X5 CrNi 18
10 1.4301 17455, 17456, 17457,
17458
JIS SUS 304 3463, 3459
ASTM UNS S30400
304 213, 249, 269, 270, 271, 450, 511, 554, 632, 688,
851
Pipe
ASTM UNS S30400
304 312, 358, 376, 409, 430, 530, 813, 814
General
ISO 683/13 11
EURONORM X5 CrNi 18 10 95-79
BS 304S31 5500
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Page Last Modified: 10/04/06 11:29
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