ASTM A358 EFW Stainless Steel Pipe
- Grade: UNS N08800, N08810, N08811, N08904, N08926, 304, 304L, 304H, 309S, 310S, S31254, 316, 316L, 316H, 317, 317L, 321, 321H, S32654, 347, 347H, 348
- Pipe OD: NPS 14″-48″ (355.6-1219.2mm)
- Pipe WT: SCH 5S, 10S, 40S, 80S, XS, XXS
- Length: 3000-12000mm
- Type: Welded
Features
ASTM A358/A358M EFW Stainless Steel Pipe for High-Temperature Service
Chemical Composition (wt.%)
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | N | Cu | Others |
| N08800 | ≤0.10 | ≤1.50 | ≤1.00 | ≤0.045 | ≤0.015 | 19.0-23.0 | 30.0-35.0 | ≤0.75 | – | – | Al 0.15-0.60, Ti 0.15-0.60 |
| N08810 | ≤0.10 | ≤1.50 | ≤1.00 | ≤0.045 | ≤0.015 | 19.0-23.0 | 30.0-35.0 | ≤0.75 | – | – | Al 0.25-0.60, Ti 0.25-0.60 |
| N08811 | ≤0.10 | ≤1.50 | ≤1.00 | ≤0.045 | ≤0.015 | 19.0-23.0 | 30.0-35.0 | ≤0.75 | – | – | Al 0.30-0.60, Ti 0.30-0.60 |
| N08904 | ≤0.02 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.035 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | ≤0.10 | 1.0-2.0 | – |
| N08926 | ≤0.02 | ≤2.00 | ≤1.00 | ≤0.035 | ≤0.010 | 19.0-21.0 | 24.0-26.0 | 6.0-7.0 | 0.15-0.25 | 0.5-1.5 | – |
| 304 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-11.0 | – | – | – | – |
| 304L | ≤0.03 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-12.0 | – | – | – | – |
| 304H | 0.04-0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-11.0 | – | – | – | – |
| 309S | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 22.0-24.0 | 12.0-15.0 | – | – | – | – |
| 310S | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 24.0-26.0 | 19.0-22.0 | – | – | – | – |
| S31254 | ≤0.02 | ≤1.00 | ≤0.80 | ≤0.030 | ≤0.010 | 19.5-20.5 | 17.5-18.5 | 6.0-6.5 | 0.18-0.22 | 0.5-1.0 | – |
| 316 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – | – | – |
| 316L | ≤0.03 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – | – | – |
| 316H | 0.04-0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – | – | – |
| 317 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | – | – | – |
| 317L | ≤0.03 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | – | – | – |
| 321 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | – | – | – | Ti 5x%C min. |
| 321H | 0.04-0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-12.0 | – | – | – | Ti 4x%C min. |
| S32654 | ≤0.02 | ≤1.00 | ≤0.80 | ≤0.030 | ≤0.010 | 24.0-26.0 | 21.0-23.0 | 7.0-8.0 | 0.35-0.55 | 0.5-1.0 | – |
| 347 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-13.0 | – | – | – | Nb 10x%C min. |
| 347H | 0.04-0.10 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-13.0 | – | – | – | Nb 8x%C min. |
| 348 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.045 | ≤0.030 | 17.0-19.0 | 9.0-13.0 | – | – | – | Nb+Ta 10x%C min. |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| N08800 | ≥520 | ≥205 | ≥30 | ≤187 |
| N08810 | ≥550 | ≥200 | ≥30 | ≤187 |
| N08811 | ≥550 | ≥200 | ≥30 | ≤187 |
| N08904 | ≥520 | ≥220 | ≥35 | ≤210 |
| N08926 | ≥650 | ≥300 | ≥35 | ≤270 |
| 304 | ≥515 | ≥205 | ≥40 | ≤201 |
| 304L | ≥485 | ≥170 | ≥40 | ≤201 |
| 304H | ≥515 | ≥205 | ≥40 | ≤201 |
| 309S | ≥515 | ≥205 | ≥40 | ≤220 |
| 310S | ≥515 | ≥205 | ≥40 | ≤220 |
| S31254 | ≥650 | ≥300 | ≥35 | ≤310 |
| 316 | ≥515 | ≥205 | ≥40 | ≤217 |
| 316L | ≥485 | ≥170 | ≥40 | ≤217 |
| 316H | ≥515 | ≥205 | ≥40 | ≤217 |
| 317 | ≥515 | ≥205 | ≥40 | ≤217 |
| 317L | ≥485 | ≥170 | ≥40 | ≤217 |
| 321 | ≥515 | ≥205 | ≥40 | ≤217 |
| 321H | ≥515 | ≥205 | ≥40 | ≤217 |
| S32654 | ≥750 | ≥430 | ≥40 | ≤250 |
| 347 | ≥515 | ≥205 | ≥40 | ≤201 |
| 347H | ≥515 | ≥205 | ≥40 | ≤201 |
| 348 | ≥515 | ≥205 | ≥40 | ≤201 |
Technical Specifications
| Specification | Value |
| Standard | ASTM A358/A358M EFW Stainless Steel Pipe for High-Temperature Service |
| Grade | UNS N08800, N08810, N08811, N08904, N08926, 304, 304L, 304H, 309S, 310S, S31254, 316, 316L, 316H, 317, 317L, 321, 321H, S32654, 347, 347H, 348 |
| Manufacturing Process | Electric-Fusion-Welded |
| Seam Type | Welded |
| Dimension | Pipe OD: NPS 14″ – 48″ (355.6-1219.2mm), Pipe WT: SCH5S, 10S, 40S, 80S, XS, XXS |
| Length | 3000-12000mm |
| Delivery Condition | Class 1—Pipe shall be double welded by filler metal processes in all passes and completely radiographed. Class 2—Pipe shall be double welded by filler metal processes in all passes. No radiography is required. Class 3—Pipe shall be single welded by processes employing filler metal in all passes and completely radiographed. Class 4—Same as Class 3, except the weld pass exposed to the inside pipe surface may be made without adding filler metal (see 6.2.2.1 and 6.2.2.2). Class 5—Pipe shall be double welded by filler metal processes in all passes and be spot radiographed. |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical analysis, Tensile test, Intergranular corrosion test, Metallographic examination |
Packing
Both ends are plain or bevelled to an angle of 30°+5°/0° as per ANSI B16.25 and equipped with plastic pipe caps or bevel protectors. Small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.
Application
High-Temperature Service: These pipes are designed to withstand high temperatures, making them suitable for use in environments with common temperatures. This includes applications such as boiler systems, superheaters, and heat exchangers in power plants and refineries.
Corrosive Environments: The austenitic stainless steel grades used in ASTM A358 pipes offer excellent corrosion resistance. This makes them ideal for industries such as chemical processing, petrochemicals, and oil and gas, where pipes are exposed to aggressive chemicals and corrosive substances.
General Applications: In addition to specialized high-temperature and corrosive environments, these pipes can also be used for general applications requiring durability, strength, and resistance to various environmental factors. This includes applications in the construction, marine, and food processing industries.
Pressure Piping: These pipes’ structural integrity and strength make them suitable for high-pressure applications, such as piping systems in industrial plants, where reliable performance under pressure is critical.
ASME Boiler and Pressure Vessel Code Applications: The pipes conform to the requirements specified in the ASME Boiler and Pressure Vessel Code, making them suitable for use in constructing boilers and pressure vessels.
Heat Exchangers: These pipes’ superior thermal conductivity and corrosion resistance make them ideal for heat exchanger applications, where efficient heat transfer and durability are required.
Power Generation: Due to their ability to withstand high temperatures and pressures, ASTM A358 pipes are used in various applications in power generation facilities, including steam generation and distribution systems.
