Stainless Steel 304 Pipes & Tubes
Stainless Steel 304 is a widely used austenitic stainless steel alloy that contains 18% chromium and 8% nickel. It has excellent corrosion resistance, good formability, and high strength, making it suitable for a wide range of applications.
The pipes and tubes made from Stainless Steel 304 are available in various sizes, thicknesses, and lengths to meet the specific requirements of different industries. They can be seamless or welded, depending on the application.
These pipes and tubes are known for their durability, longevity, and resistance to corrosion, making them ideal for use in harsh environments. They can withstand high temperatures and pressures, making them suitable for applications that require reliable and efficient performance.
Stainless Steel 304 Pipes & Tubes are used in various applications such as:
1. Plumbing and water supply systems
2. Heat exchangers and condensers
3. Food and beverage processing equipment
4. Chemical processing plants
5. Pharmaceutical and medical equipment
6. Oil and gas pipelines
7. Automotive industry
8. Construction and architecture
Overall, Stainless Steel 304 Pipes & Tubes are a versatile and reliable choice for various industrial applications due to their excellent properties and performance.
| Standard | SS 304 |
| UNS | S30400 |
| WERKSTOFF NR. | 1.4301 |
| AFNOR | Z7CN18-09 |
| JIS | SUS 304 |
| GOST | 08X18H10 |
| BS | 304S31 |
| EN | X5CrNi18-10 |
UNS S30400 PIPES & TUBES CHEMICAL COMPOSITION:
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 304 | 0.08 max | 2 max | 0.75 max | 0.040 max | 0.030 max | 18 – 20 | - | 8 – 11 | - |
304 PIPES & TUBES MECHANICAL & PHYSICAL PROPERTIES:
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
Permitted Variations in Wall Thickness
| Tolerance, % from Nominal | ||
| NPS Designator | Over | Under |
| ⅛ to 2½ incl., all t/D ratios | 20.0 | 12.5 |
| 3 to 18 incl., t/D up to 5% incl. | 22.5 | 12.5 |
| 3 to 18 incl., t/D > 5% incl. | 15.0 | 12.5 |
| 20 and larger, welded, all t/D ratios | 17.5 | 12.5 |
| 20 and larger, seamless, t/D up to 5% incl. | 22.5 | 12.5 |
| 20 and larger, seamless, t/D > 5% | 15.0 | 12.5 |
|
where: t = Nominal Wall Thickness D = Ordered Outside Diameter |
||
Permitted Variations in Outside Diameter
| NPS Designator | Permissible Variations in Outside Diameter | DN Designator | Permissible Variations in Outside Diameter | ||
| Over in. |
Under in. |
Over [mm] |
Under [mm] |
||
| ⅛ – 1½, incl | 1⁄64 (0.015) | 1⁄32 (0.031) | [6–40], incl | [0.4] | [0.8] |
| Over 1½ to 4, incl | 1⁄32 (0.031) | 1⁄32 (0.031) | Over [40 to 100] | [0.8] | [0.8] |
| Over 4 to 8, incl | 1⁄16 (0.062) | 1⁄32 (0.031) | Over [100 to 200] | [1.6] | [0.8] |
| Over 8 to 18, incl | 3⁄32 (0.093) | 1⁄32 (0.031) | Over [200 to 450] | [2.4] | [0.8] |
| Over 18 to 26, incl | ⅛ (0.125) | 1⁄32 (0.031) | Over [450 to 650] | [3.2] | [0.8] |
| Over 26 to 34, incl | 5⁄32 (0.156) | 1⁄32 (0.031) | Over [650 to 850] | [4.0] | [0.8] |
| Over 34 to 48, incl | 3⁄16 (0.187) | 1⁄32 (0.031) | Over [850 to 1200] | [4.8] | [0.8] |
Tensile Requirements
| GRADE 304 |
GRADE 304L |
GRADE 316 |
GRADE 316L |
||
| Tensile Strength, minimum PSI | 75,000 | 70,000 | 75,000 | 70,000 | |
| Yield Strength, minimum PSI | 30,000 | 25,000 | 30,000 | 25,000 |
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