304 Stainless Steel Wire Mesh/Screen Properties
1: Corrosion Resistance
304 stainless steel wire mesh/screen has excellent performance in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60°C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 60°C.
2: Heat Resistance
304 stainless steel wire mesh/screen has good oxidation resistance in intermittent service to 870°C and in continuous service to 925°C. Continuous use of 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.
Grade 304H wire mesh/screen has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C. 304H will become sensitised in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
304 Stainless Steel Wire Mesh/Screen Composition
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
304 |
min.
max.
|
-
0.08
|
-
2.0
|
-
0.75
|
-
0.045
|
-
0.030
|
18.0
20.0
|
- |
8.0
10.5
|
-
0.10
|
|
304L |
min.
max.
|
-
0.030
|
-
2.0
|
-
0.75
|
-
0.045
|
-
0.030
|
18.0
20.0
|
- |
8.0
12.0
|
-
0.10
|
|
304H |
min.
max.
|
0.04
0.10
|
-
2.0
|
-
0.75
|
-0.045 |
-
0.030
|
18.0
20.0
|
- |
8.0
10.5
|
- |
304 Stainless Steel Wire Mesh/Screen Mechanical Properties
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
Rockwell B (HR B) max |
Brinell (HB) max |
|
304 |
515 |
205 |
40 |
92 |
201 |
|
304L |
485 |
170 |
40 |
92 |
201 |
|
304H |
515 |
205 |
40 |
92 |
201 |
|
304H also has a requirement for a grain size of ASTM No 7 or coarser. |
Grade Specification Comparison
|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
|
BS |
En |
No |
Name |
|
304 |
S30400 |
304S31 |
58E |
1.4301 |
X5CrNi18-10 |
2332 |
SUS 304 |
|
304L |
S30403 |
304S11 |
- |
1.4306 |
X2CrNi19-11 |
2352 |
SUS 304L |
|
304H |
S30409 |
304S51 |
- |
1.4948 |
X6CrNi18-11 |
- |
-
|
