Stainless Steel 304 /UNS S30400/ 1.4301
Stainless Steel 304L/UNS S30403/1.4303
Stainless Steel 304H/UNS S30409/1.4948
SS304 is the most common stainless steel.It is an austenitic stainless steel, which has a maximum carbon of 0.08%, while SS304L with carbon maximum 0.03%.
SS304 /304L is used for a variety of household and industrial applications such as screws, machinery parts, car headers, and food-handling equipment.
AISI 304H is a tough austenitic stainless steel , it's readily formed and fabricated through a full range of cold working operations.
ASTM A182 F304 F304L 304H Flange Chemical Composition, %
Grade |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si≤ |
Cr |
Mo |
Ni |
304 |
S30400 |
0.08 |
2 |
0.045 |
0.03 |
1 |
18.0-20.0 |
- |
8.0-11.0 |
304L |
S30403 |
0.03 |
2 |
0.045 |
0.03 |
1 |
18.0-20.0 |
- |
8.0-13.0 |
304H |
S30409 |
0.04–0.10 |
2 |
0.045 |
0.03 |
1 |
18.0-20.0 |
- |
8.0-11.0 |
Stainless steel F304 F304L 304H Flange Mechanical Properties
Mechanical properties |
Tensile, min, ksi[MPa] |
Yield, min, ksi[MPa] |
Elongation in 2 in.
[50 mm] or 4D,
min, % |
Reduction of
Area, min, % |
304, 304H |
75【515】 |
30【205】 |
30 |
50 |
304L |
70【485】 |
25【170】 |
30 |
50 |
ASTM SPECIFICATION
Pipe,
SMLS& Welded
|
Tube,
SMLS& Welded
|
Pipe ,
Seamless
|
Sheet/Plate
|
Bar /Rod
|
Forging /Flange
|
BW Fittings
|
ASTM A312
|
ASTM A269
|
ASTM A213
|
ASTM A240
|
ASTM A276/A479
|
ASTM A182
|
ASTM A403
|
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