Original
By certification 
304L Stainless Steel Sheet
Gnee Stainless inventory includes Alloy 304 (UNS S30400), in sheet, sheet coil, plate, plate coil, round bar, processed flat bar and tubular products. Alloy 304 is ideally suited for home and commercial applications.
This 304L stainless steel (SS) type is austenitic and the most widely used alloy in the AISI (American Iron and Steel Institute) 300 series.It is a good general all-purpose stainless grade. 304/304L dual certified stainless sheet is a very low carbon "18-8" austenitic chromium-nickel steel with good corrosion resistance and superior resistance to intergranular corrosion following welding or stress relieving. It also shares many similar properties to 18-8 stainless steel, including resistance to corrosion and oxidation. 304 sheets are used in applications where corrosion resistance is required, but elevated temperatures are not involved.
STANDARDS: ASTM/ASME: UNS S30400 / S30403
EURONORM: 1.4301 / 1.4303
AFNOR: Z5 CN 18.09 / Z2 CN 18.10
DIN: X5 CrNi 18 10 / X2 CrNi 19 11
RESISTANCE CORROSION RESISTANCE: Resistance to moderately aggressive organic acids is a result of the 9 to 11% nickel that the 304 alloys contain.
Resistance to corrosion in oxidizing environments is a result of the 18 to 19% chromium that the 304 alloys contain.
The 304, 304L, and 304H may be considered to perform uniformly in most corrosive environments.
HEAT RESISTANCE: Continuous use of 304 in the 800-1580°F range is not recommended if subsequent aqueous corrosion resistance is important.
Good oxidation resistance in intermittent service to 1600°F and in continuous service to 1690°F.
PROCESSING CORROSION RESISTANCE: Resistance to moderately aggressive organic acids is a result of the 9 to 11% nickel that the 304 alloys contain.
Resistance to corrosion in oxidizing environments is a result of the 18 to 19% chromium that the 304 alloys contain.
The 304, 304L, and 304H may be considered to perform uniformly in most corrosive environments.
HEAT RESISTANCE: Continuous use of 304 in the 800-1580°F range is not recommended if subsequent aqueous corrosion resistance is important.
Good oxidation resistance in intermittent service to 1600°F and in continuous service to 1690°F.
Chemical Properties:
C |
Mn |
Si |
P |
S |
Cr |
Ni |
N |
|
304 |
0.07max |
2.0max |
0.75max |
0.045max |
0.03max |
Min: 18.0 max: 20.0 |
Min: 8.0 max: 10.5 |
- |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
N |
Mechanical Properties:
Grade |
Tensile Strength ksi (min) |
Yield Strength 0.2% ksi (min) |
Elongation % |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
304 |
75 |
30 |
40 |
201 |
92 |
Physical Properties:
Density |
Thermal Conductivity |
Electrical |
Modulus of |
Coefficient of |
Specific Heat |
Melting |
at 68°F: 0.285 |
9.4 at 212°F |
28.3 at 68°F |
28 |
9.4 at 32 – 212°F |
0.1200 at 68°F to 212°F |
2500 to 2590 |
12.4 at 932 °F |
39.4 at 752°F |
10.2 at 32 – 1000°F |
||||
49.6 at 1652 °F |
10.4 at 32 – 1500°F |
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