|
AISI |
Service Properties |
Applications |
| 202 |
High Cold Work
hardening rate, good formability. |
Water Tubing,
watch parts, foot rule, Industrial Knives, bus body
accessories, Kitchen appliances, Kerosene and Gas Stove parts.
|
| 301 |
Lower Chrome and
Nickel content increases the work hardening rate to give high
strength and abrasion resistance. Particularly suitable for
components requiring stretch forming, high strength or good
spring properties. |
Springs,
pressings, connectors, chemically etched components. |
| 304 |
The most popular
grade in the austenitic (300) series, exhibiting good
corrosion resistance and formability. 1.4301 (AISI 304) can be
used in the welded condition in mild environments, however
1.4307 (AISI 304L) should be used in more corrosive
conditions. |
Floppy disk
(shutter), flexible tube, expanded metal, fabrications,
decorative trim, pressings, springs |
| 304L |
Reduced Carbon
content for better corrosion resistance in welded structures
than the base grade 1.4301 (AISI 304). |
Water tube,
bellows, pressings |
| 316 |
Molybdenum is
added to increase the corrosion resistance when compared with
the base grade 1.4301 (AISI 304)
Two alloys are produced having increased corrosion resistance
with increasing Molybdenum.
1.4401 = 2.0 – 2.5 % Molybdenum
1.4436 = 2.5 – 3.0 % Molybdenum |
Bursting discs,
seals, bellows, gaskets, expansion joints, explosion panels,
tubes, diaphragms and components in chemical, petrochemical
and marine applications. |
| 316L |
Reduced Carbon
content for better welded corrosion resistance than 1.4401 /
1.4436 (AISI 316) |
As for 1.4401 and
1.4432 above. |
| 321 |
Titanium is added
to oppose chromium carbide precipitation and remove the risk
of deteriorating corrosion performance in welded structures as
may occur in the base grade 1.4301 (AISI 304). |
Expansion joints,
seals, bellows, gaskets, honeycomb seals, thermal insulation,
tube and bellows. The use of
“stabilised” grades is favoured by the aerospace industry,
particularly in engine related applications. |
| 409 M |
Good corrosion
and oxidation resistance. |
Auto mufflers,
catalytic converters and transformer cases. |
| 410 S |
Weld able and
resistance to scaling. Good corrosion and heat resistance. |
Turbine blades,
fasteners and finishing tackle. |
| 420 |
this grade, with
increased Carbon content, has improved potential hardness and
wear / abrasion resistance. |
Springs, knives
and cutting edges generally, doctor blades and similar
printing industry wear and scraping applications |
| 430 |
Lower Chrome and
the absence of Nickel result in a lower work hardening rate
than austenitic grades resulting in a lower breaking strength
especially when fully cold worked. Most often used in the
annealed (soft) condition this grade has good formability and
a moderate corrosion resistance. Unlike the austenitic grades
the ferritic steels respond strongly to a magnet. When cold
rolled and annealed the surface finish is reflective. It is
significantly lower cost than the austenitic grades. Can only
be hardened by cold work. |
Automotive and
domestic appliance trim, domestic sinks, domestic washer
drums, floppy disc hub and pressings generally. |
| J4 (1%Ni) |
High cold work
hardening rate, normal formability |
Welded tubes,
utensils, kitchen appliances, sinks |
Stainless Steel Wire
