General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
Alloy 304/304L (UNS S30400/S30403) is the most widely utilized “18-8” chromium-nickel austenitic stainless steel. It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications.It is common practice for 304L to be dual certified as 304 and 304L. The low carbon chemistry of 304L combined with an addition of nitrogen enables 304L to meet the mechanical properties of 304.
Alloy 304/304L resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. The alloy has excellent resistance to intergranular corrosion in the as-welded condition. Alloy 304/304L has excellent strength and toughness at cryogenic temperatures.Alloy 304/304L is non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices.
Standard Inventory Specifications
- UNS S30403
- UNS S30400
- AMS 5513
- AMS 5511
- AMS 5647
- ASTM A 240
- ASME SA 240
Common Trade Names
- 304 Stainless, 304L Stainless
Applications
- Chemical and Petrochemical
- Processing—pressure vessels, tanks, heat exchangers, piping systems, flanges, fittings, valves and pumps
- Food and Beverage Processing
- Medical
- Mining
- Petroleum Refining
- Pharmaceutical Processing
- Power Generation—nuclear
- Pulp and Paper
Chemical Composition
304 Chemical Composition
Element
Percent by Weight
C
Carbon
0.080 (304)
Mn
Manganese
2
P
Phosphorous
0.045
S
Sulfur
0.03
Si
Silicon
0.75
Cr
Chromium
18.000 – 20.000
Ni
Nickel
8.000 – 10.500
Al
Aluminum
0.1
304L Chemical Composition
Element
Percent by Weight
C
Carbon
0.030 (304L)
Mn
Manganese
2
P
Phosphorous
0.045
S
Sulfur
0.03
Si
Silicon
0.75
Cr
Chromium
18.000 – 20.000
Ni
Nickel
8.000 – 10.500
Al
Aluminum
0.1
Physical Properties
304 / 304L Physical Properties
- Density: 0.29 lb/in³ (8.03 g/cm³)
- Modulus of Elasticity in Tension 29 x 106 psi (200 GPa)
| Melting Point | Density | Specific Gravity | Modulus of Elasticity in Tension |
| 2550-2590° F 1399-1421° C |
.285 lb/in³ 7.90 g/cm³ |
7.90 | 29 X 106 psi 200 Gpa |
Mechanical Properties
Mechanical Properties and Yield Strength of 304 / 304L
| Property | 302,304 | 304L | 305 | |
| 0.2% Offset Yield Strength, psi (MPa) | 30,000 (205) |
25,000 (170) |
25,000 (170) |
|
| Ultimate Tensile Strength, psi (MPa) | 75,000 (515) |
70,000 (485) |
70,000 (485) |
|
| Percent Elongation in 2 in. (51 mm) | 40.0 | 40.0 | 40.0 | |
| Hardness, Max., Brinell (RB) | 201 (92) | 201 (92) | 183 (88) | |
- 304/304L Pipes
- 304/304L Fittings
- 304/304L Bars
- 304/304L Sheets & Plates
- 304/304L Coils & Strips
- 304/304L Wires
304/304L Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ4-Φ1219mm; WT:…
Introduction: Wisine its production capacity of stainless steel seamless pipe, roughly 2100 tons per month. As per your requirement…
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304/304L Sanitary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ8-Φ850mm; WT:…
Introduction: Wisine produces sanitary tubes that are widely applicable to food & beverage industry, pharmaceutical industry…
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304/304L Thick-walled Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ10-Φ1219mm; WT:…
Introduction: Thick-walled stainless steel pipe, also named stainless steel hollow bar, are usually used for mechanical applications or…
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304/304L Welded Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ6-Φ2800mm; WT:…
Introduction: Wisine produces welded stainless steel pipe in different shapes: round, square and rectangle. In comparison with seamless pipe…
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304/304L Square Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Side Length: 4×4-300×300mm…
Introduction: As per your requirement, stainless steel square pipe can be made into welded stainless steel square pipe or…
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304/304L Rectangle Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Side Length: 4×6-200×400…
Introduction: Stainless steel rectangle pipe is hollow stainless steel long product and can be classified into seamless and welded…
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304/304L Capillary Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ0.4-Φ16.0mm; WT:…
Introduction: Wisine produces stainless steel capillary with different finishes for your option. Quite common in our international markets…
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304/304L Coil Tube
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: OD: Φ0.4-Φ16mm; WT:…
Introduction: Stainless steel coil tubes refer to those tubes with diameter ranging from 0.5mm to 20mm and wall thickness from…
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304/304L Elbow
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN15 – DN600…
Wall Thickness: Sch5S- Sch160…
Classification: 45° elbow, 90° elbow, 180° elbow, long radius elbow, short radius elbow…
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304/304L Flange
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN6 – DN750…
Wall Thickness: Sch5S-Sch160S…
Classification: SW (Socket Welding) flange, WN (Welding Neck) flange, SO (Slip-On) flange…
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304/304L Tee
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN15 – DN750…
Wall Thickness: Sch5S-Sch160…
Classification: Straight tee, reducing tee…
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304/304L Cross
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S-Sch160…
Classification: Straight cross, reducing cross…
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304/304L Reducer
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN15 – DN500…
Wall Thickness: Sch5S-Sch160…
Classification: Concentric reducer, eccentric reducer…
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304/304L Pipe Cap
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Outer Diameter: DN15 – DN1200…
Wall Thickness: Sch5S- Sch160…
Classification: Hemispherical cap, elliptical/oval cap, dish cap, spherical cap…
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304/304L Round Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Diameter: 2mm – 600mm…
Introduction: Stainless steel round bars are categorized as both long products and bar materials. SS round bar is long stainless steel product…
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304/304L Flat Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Thickness: 0.5mm – 200mm…
Introduction: Stainless steel flat bars are of rectangle shape with root face (or round edges) and they can be semi-finished or finished…
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304/304L Angle Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Equal Angle Bar Dimensions…
Introduction: Stainless steel angle bars are L-shape bars with two side widths perpendicular to each other. The two widths can be equal…
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304/304L Square Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Dimensions: 2mmx2mm – …
Introduction: Stainless steel square bars are long stainless steel products with its cross section as square. At Wisine, we produce SS square…
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304/304L Hexagon Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Dimension: 3mm – 180mm…
Introduction: Stainless steel hex bar is solid stainless steel long product with its cross section as hexagonal. Wisine produce stainless…
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304/304L Channel Bar
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Hot Rolled: 40mmx80mmx…
Introduction: Stainless steel channel bar is stainless steel long product with its section as U shape. At Wisine, apart from stainless steel…
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304/304L Sheet
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Thickness: ≤ 5mm…
Introduction: In Wisine, we refer to thickness below 5mm as stainless steel sheets and thickness above 5mm as SS plates…
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304/304L Plate
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Thickness: ≥ 5mm…
Introduction: In Wisine, we regard thickness above (includes) 5mm as stainless steel plates. Our stainless steel plates are hot rolled…
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304/304L Coil
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Width: ≥ 610mm…
Introduction: Our stainless steel coils are primary quality coils from the origin of Baosteel, ZPSS, TISCO, JISCO, ATI, SMC, HAYNES…
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304/304L Strip
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Width: ≤ 610mm…
Introduction: Stainless steel strip has its width less than 610mm, with its thickness ranging from 0.02mm to 6mm. For width over 610mm…
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304/304L Wire
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Diameter: 0.02mm-25mm…
Introduction: Wisine produces high quality wire and stainless steel wire rope. Our annual production capacity is roughly 8000 tons…
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304/304L Wire Rod
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Diameter: Hot rolled wire rod:…
Weight: ≤500Kg per roll
Tolerance: H9, H11
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304/304L Wire Rope
Standard: ASTM, JIS, DIN, EU…
Grade: 304/304L…
Size: Φ0.15mm-Φ50mm…
Introduction: Wisine produces high quality wire and stainless steel wire rope. Our annual production capacity is roughly 8000 tons…
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