At Mitchell Stainless in Hamilton, New Zealand, we supply premium stainless steel tubing engineered for high-temperature and demanding industrial applications. Our Stainless Steel 304H Tubing is a high-carbon variant of 304, designed to provide enhanced tensile strength and creep resistance while maintaining excellent corrosion resistance. Ideal for boilers, pressure vessels, heat exchangers, and thermal processing systems, these tubes offer reliable performance under elevated temperatures. Supported by Mitchell Stainless’ commitment to quality and local expertise, 304H tubing delivers durable, heat-resistant, and structurally reliable solutions for industrial and engineering projects where mechanical integrity is critical.
Stainless Steel 304H Tubing is manufactured from an austenitic stainless steel alloy containing chromium, nickel, and higher carbon content. The increased carbon improves tensile strength and creep resistance at elevated temperatures while preserving corrosion resistance. The tubing provides excellent toughness, dimensional stability, and mechanical performance under prolonged heat exposure. Stainless Steel 304H maintains structural integrity and reliability in continuous high-temperature applications, making it suitable for industrial, chemical, and thermal processing environments where high-strength, heat-resistant stainless steel tubing is required.
| Alloy 304H Standards | Stainless Steel 304H |
|---|---|
| ASTM A213 Stainless Steel Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| ASTM A249 TP 304H Stainless Steel Welded Tube Size | 6.35 mm OD To 152 mm OD |
| ASTM A269 TP 304H Stainless Steel Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| ASME SA213 TP 304H Stainless Steel Tube wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
| SS 304H Length | Single Random, Double Random, Standard & Cut length Tube |
| UNS S30409 Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| ASTM A213 Gr. TP304H Form | ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc |
| ASTM A269 TP 304H Stainless Steel Type | Seamless, ERW, EFW, Welded, Fabricated Tube |
| ASTM A213 Stainless Steel End | Plain End, Beveled End, Treaded Tube |
| ASME SA213 SS 304H Marking | All 304h Stainless Steel Tube are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| ASME SA213TP 304H Stainless Steel Application | Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube, |
| 304H SS Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Stainless Steel 304H Specialize in | Stainless Steel 304H Capillary Tube & Other Odd Size Alloy 304H Heat Exchanger & Condenser Tube |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | – | ||
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
Contact us to get a quick quote for your requirement.
We assures that all its Stainless Steel 304H Tubing is thoroughly tested for quality and performance. Mechanical properties, corrosion resistance, and dimensional accuracy of the tubing are tested. The following certificates are also provided: Material Test Reports (MTR), 3.1 certificates, and ISO compliance, ensuring industry standards and reliability.
These tubes offer superior corrosion resistance, ideal for high-pressure applications. Sizes typically range from 1/8″ to 24″ in diameter. They provide excellent durability and are used in industries requiring precise tolerances.
Known for its excellent corrosion resistance, this tubing is available in sizes from 1/8″ to 24″. It’s cost-effective for less critical applications and offers good strength and flexibility for various uses.
These tubes excel in corrosion resistance and thermal conductivity. Common sizes range from 1/2″ to 1-1/2″ in diameter, designed for efficient heat transfer in industrial applications.
Providing high corrosion resistance, these tubes are typically available in sizes from 1/16″ to 2″. They are crucial for precise instrumentation and control systems in various industries.
These corrosion-resistant tubes come in sizes typically from 1/2″ to 5″ in diameter. They are designed to withstand high temperatures and pressures in boiler systems.
Featuring high corrosion resistance, these U-shaped tubes are available in sizes from 1/2″ to 1-1/2″. They are commonly used in heat exchangers and condensers for efficient thermal management.
Known for its superior corrosion resistance, this tubing ranges from 3/8″ to 1-1/4″ in diameter. It’s used in condensers to efficiently transfer heat and condense steam into water.
These tubes offer excellent corrosion resistance and are available in sizes typically from 1/2″ to 1-1/2″. They are used in applications requiring enhanced heat transfer efficiency due to their extended surface area.
Stainless Steel 304H Tubing is commonly used in high-temperature and industrial applications. Typical uses include boilers, pressure vessels, heat exchangers, thermal processing systems, and chemical processing equipment. They are also suitable for power generation facilities, petrochemical plants, and machinery exposed to sustained elevated temperatures. At Mitchell Stainless, we supply 304H tubing for projects requiring mechanical strength, corrosion resistance, and long-term reliability under extreme heat. Its combination of high-temperature durability, structural stability, and corrosion resistance makes it a trusted choice for industrial, chemical, and thermal engineering applications.
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