ASTM 304 316L Stainless Steel Pipe Tube 6mm-630mm OD Customizable Length
We are a professional manufacturer specializing in ASTM standard stainless steel pipe. Our product range covers 304, 316L, 316, 310S, 321, and 904L stainless steel pipes/tubes, all manufactured in strict accordance with ASTM standards. The following will focus on 310S stainless steel pipe and 904L stainless steel tube, mainly from the aspects of product specifications, product description, chemical composition, physical properties, mechanical properties, application fields, etc.
Specifications
Product: ASTM A312 310S Stainless Steel Seamless Pipe
Grade: 310S
UNS: S31008
EN: 1.4845 / X8CrNi25-21
| Specification | 310S Stainless Steel Pipe |
|---|---|
| Standard | ASTM A312 / ASME SA312 |
| Grade | 310S |
| UNS No. | S31008 |
| EN Grade | 1.4845 |
| Product Type | Seamless |
| Outside Diameter | 6–630 mm |
| Wall Thickness | 0.5–50 mm |
| Length | 5,000–12,000 mm |
| Custom Length | Available |
| Schedule | SCH 5S, 10S, 40S, 80S, 160S |
| Manufacturing Process | Hot Rolled / Cold Drawn |
| Heat Treatment | Solution Annealed |
| Surface | Pickled / Annealed & Pickled / Bright Annealed |
| End Type | Plain End / Beveled End / Threaded End |
| Dimensional Standard | ASME B36.19 / ASTM A312 |
| Testing | Hydrostatic / Nondestructive Electric Test |
| Inspection | Chemical / Mechanical / Dimensional / Visual |
| Certificate | EN 10204 3.1 MTC |
| Application | Furnaces, Heat Treatment, Petrochemical, High-Temperature Piping |
Product: 904L Stainless Steel Tube
Grade: 904L
UNS: N08904
EN: 1.4539 / X1NiCrMoCu25-20-5
| Specification | 904L Stainless Steel Tube |
|---|---|
| Standard | ASTM A269 / ASTM A213 |
| Grade | 904L |
| UNS No. | N08904 |
| EN Grade | 1.4539 |
| Product Type | Seamless |
| Outside Diameter (OD) | 3–610 mm |
| Wall Thickness | 0.3–30 mm |
| Length | 1,000–12,000 mm |
| Custom Length | Available |
| Manufacturing Process | Cold Drawn / Cold Rolled / Seamless |
| Heat Treatment | Solution Annealed |
| Surface | Pickled / Bright Annealed / Polished |
| OD Tolerance | According to applicable standard |
| Wall Thickness Tolerance | According to applicable standard |
| End Type | Plain End / Cut End / Beveled End |
| Testing | Hydrostatic / Eddy Current / Nondestructive Testing |
| Inspection | Chemical / Mechanical / Dimensional / Visual |
| PMI | Available |
| Certificate | EN 10204 3.1 MTC |
| Custom Size | Available |
| Application | Chemical Processing, Petrochemical, Marine, Pharmaceutical, Pulp & Paper |
| NPS | Outside Diameter |
|---|---|
| 1/2" | 21.3 mm |
| 1" | 33.4 mm |
| 1-1/2" | 48.3 mm |
| 2" | 60.3 mm |
| 3" | 88.9 mm |
| 4" | 114.3 mm |
| 6" | 168.3 mm |
| 8" | 219.1 mm |
| 10" | 273.0 mm |
| 12" | 323.9 mm |
| 16" | 406.4 mm |
| 20" | 508.0 mm |
| 24" | 610.0 mm |
| OD | Wall Thickness | Length |
|---|---|---|
| 10 mm | 1 mm | 6 m |
| 12 mm | 1.5 mm | 6 m |
| 16 mm | 2 mm | 6 m |
| 20 mm | 2 mm | 6 m |
| 25 mm | 2.5 mm | 6 m |
| 32 mm | 3 mm | 6 m |
| 38 mm | 3 mm | 6 m |
| 50 mm | 3 mm | 6 m |
| 60 mm | 4 mm | 6 m |
| 76 mm | 4 mm | 6 m |
| 89 mm | 5 mm | 6 m |
| 108 mm | 5 mm | 6 m |
| Item | 310S Stainless Steel Pipe | 904L Stainless Steel Tube |
|---|---|---|
| Product Focus | High-temperature industrial piping | Corrosion-resistant precision tubing |
| Typical Standard | ASTM A312 | ASTM A269 / ASTM A213 |
| Size Format | NPS / OD × Wall Thickness / Schedule | OD × Wall Thickness × Length |
| Size Range | Medium to large diameters | Small to medium diameters |
| Wall Thickness | Mainly Schedule-based | Mainly specified in mm |
| Key Features | High-temperature & oxidation resistance | Excellent corrosion resistance |
| Typical Applications | Furnaces, heat treatment, petrochemical | Chemical, marine, pharmaceutical |
In short:
310S Pipe → High-temperature industrial piping
904L Tube → High-corrosion-resistant precision tubing
| Element | 310S Stainless Steel (UNS S31008) | 904L Stainless Steel (UNS N08904) |
|---|---|---|
| C | ≤ 0.08% | ≤ 0.020% |
| Si | ≤ 1.00% | ≤ 1.00% |
| Mn | ≤ 2.00% | ≤ 2.00% |
| P | ≤ 0.045% | ≤ 0.045% |
| S | ≤ 0.030% | ≤ 0.035% |
| Cr | 24.0–26.0% | 19.0–23.0% |
| Ni | 19.0–22.0% | 23.0–28.0% |
| Mo | — | 4.0–5.0% |
| Cu | — | 1.0–2.0% |
| Fe | Balance | Balance |
- 310S: Higher Cr content and high Ni → primarily designed for high-temperature oxidation resistance and thermal stability.
- 904L: Higher Ni + Mo + Cu content and very low carbon → designed for excellent corrosion resistance, especially in aggressive chemical environments.
| Property | 310S Stainless Steel | 904L Stainless Steel |
|---|---|---|
| Density | ~7.9 g/cm³ | ~8.0 g/cm³ |
| Melting Range | ~1,400–1,450°C | ~1,300–1,400°C |
| Thermal Conductivity | ~14.2 W/(m·K) | ~12.0–13.0 W/(m·K) |
| Specific Heat | ~500 J/(kg·K) | ~450–500 J/(kg·K) |
| Electrical Resistivity | ~0.78 μΩ·m | ~0.95 μΩ·m |
| Elastic Modulus | ~200 GPa | ~195 GPa |
| Poisson's Ratio | ~0.30 | ~0.30 |
| Thermal Expansion | ~15.0 × 10⁻⁶/K | ~15.5 × 10⁻⁶/K |
| Magnetic Property | Generally non-magnetic | Generally non-magnetic |
- 310S: Better suited for high-temperature and furnace applications, with good thermal stability and oxidation resistance.
- 904L: Better suited for highly corrosive environments, with excellent corrosion resistance due to its Mo, Cu, and high Ni content.
| Property | 310S Stainless Steel | 904L Stainless Steel |
|---|---|---|
| Tensile Strength, min. | 515 MPa | 490 MPa |
| Yield Strength, min. (0.2%) | 205 MPa | 220 MPa |
| Elongation, min. | 35% | 35% |
| Hardness, Brinell, max. | ≤217 HB | ≤220 HB |
| Hardness, Rockwell B, max. | ≤95 HRB | ≤96 HRB |
| Condition | Annealed | Solution Annealed |
- 310S: Slightly higher minimum tensile strength and excellent stability at elevated temperatures, making it suitable for furnaces and high-temperature equipment.
- 904L: Slightly higher yield strength and excellent ductility, with its main advantage being superior corrosion resistance rather than high-temperature strength.
Mainly used where high-temperature and oxidation resistance are required:
- Industrial furnaces
- Heat-treatment equipment
- Furnace piping and components
- High-temperature process lines
- Petrochemical equipment
- Thermal processing systems
- High-temperature gas piping
Mainly used where excellent corrosion resistance is required:
- Chemical processing equipment
- Sulfuric acid equipment
- Petrochemical systems
- Marine and seawater equipment
- Pharmaceutical equipment
- Pulp and paper processing
- Heat exchangers
- Corrosive process piping
- seamless stainless steel pipe manufacturer
310S is mainly designed for high-temperature and oxidation-resistant applications, while 904L is designed for highly corrosive environments.
2. Which is better for high-temperature applications?310S is generally the better choice for furnace and high-temperature applications because of its excellent oxidation resistance and thermal stability.
3. Which has better corrosion resistance?904L generally offers superior corrosion resistance, particularly in aggressive chemical environments such as sulfuric acid and other acidic media.
4. Can 310S stainless steel pipe be used in furnaces?Yes. 310S seamless pipe is widely used in industrial furnaces, heat-treatment equipment, furnace piping, and high-temperature process systems.
5. Where is 904L stainless steel tube commonly used?904L tube is commonly used in chemical processing, petrochemical, marine, pharmaceutical, pulp and paper, and heat exchanger applications.
6. What are the UNS numbers for 310S and 904L?- 310S: UNS S31008
- 904L: UNS N08904
For highly corrosive chemical environments, 904L is generally the preferred option because of its high nickel, molybdenum, and copper content.
8. Which material is better for furnace applications?310S is generally more suitable for furnace applications where high-temperature oxidation resistance and thermal stability are the primary requirements.
9. Are both materials available in custom sizes?Yes. 310S stainless steel pipe and 904L stainless steel tube can be supplied in customized outside diameters, wall thicknesses, and lengths according to project requirements.
10. Can you provide material test certificates?Yes. EN 10204 3.1 MTC can be provided upon request, including chemical composition, mechanical properties, heat number, and inspection results.
11. Which one should I choose: 310S or 904L?Choose 310S when the primary requirement is high-temperature performance. Choose 904L when the primary requirement is maximum corrosion resistance.
| 310S Stainless Steel Pipe | 904L Stainless Steel Tube |
|---|---|
| ???? Excellent High-Temperature Resistance | ???? Superior Corrosion Resistance |
| ????️ Excellent Oxidation Resistance | Excellent Resistance to Acidic Media |
| ???? Good High-Temperature Strength | High Nickel & Molybdenum Content |
| ???? Good Weldability & Fabrication | ???? Good Weldability & Formability |
| ⚙️ Suitable for Furnace Systems | ⚙️ Suitable for Chemical Processing |
| ????️ Stable Performance at Elevated Temperatures | ???? Suitable for Marine & Seawater Environments |
| ???? Wide Range of Pipe Sizes | ???? Precision OD & Wall Thickness Available |
| ???? Ideal for Industrial Applications | ???? Ideal for Highly Corrosive Applications |
| ???? ASTM A312 Compliance | ???? ASTM/ASME Standards Available |
| ???? Custom Sizes Available | ???? Custom Sizes & Lengths Available |
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