Chung Metal offers Stainless Steel 304H Bars and Rods specifically used for high-temperature service. These high-carbon types of 304 are manufactured in Da Nang, Vietnam, and offer enhanced strength and creep resistance. Suitable for boilers, heat exchangers, and components of power plants, 304H bars exhibit high oxidation resistance and formability. Backed by quality assurance systems and technical assistance, Chung Metal guarantees 304H products conform to ASME and ASTM standards for high-temperature stainless steel.
304H has 18–20% chromium, 8–11% nickel, and carbon of 0.04–0.10%, which is greater than standard 304. It possesses tensile strength of about 500–700 MPa and yield strength ~205–275 MPa. Increased carbon enhances strength at high temperatures. It retains satisfactory corrosion resistance and oxidation resistance in use up to 870°C. It is non-magnetic in annealed condition.
| Grade | Stainless Steel 304H (UNS S30409) |
|---|---|
| Specification | ASTM A276, ASTM A479 |
| Round bar size | Diameter: 3-~800mm |
| Hex Bar size | 2-100mm A/F |
| Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Hollow Bar | 32 OD x 16 ID to 250 OD x 200 ID |
| Square bar size | 4 to 100mm |
| Section | 3.0 to 12.0mm thickness |
| Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Billet Size | 1/2″ to 495mm Diameter |
| Channel Bar | 80 x 40 to 150 x 75 mm section; 5 to 6 mm thickness |
| Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Angle bar size | 3*20*2~12*100*100 mm |
| Form | Rings, Profiles, Hollow, Flat Bar, Square, Round, Rectangle, Triangle, Rod, Half Round Bar, T-Bar, Hex (A/F), Precision Ground Bar, Channel Bar, Blocks, Round Rod, Threaded, Billet, Ingot, I/H Bar, Forging etc. |
| Technique | Cold Drawn, Rod, Hot Rolled, Cold Rolled, Forged Round Bar |
| Condition | annealed, Hardened & tempered |
| Surface | Cold Drawn, Polished, Bright, Hot Rolled Pickled, Sand Blasting Finished,Hairline |
| Element | SS 304H |
| C | 0.10 max |
| Ni | 8.0 – 10.5 |
| P | 0.045 max. |
| Mn | 2.00 max |
| Si | 0.75 max |
| S | 0.03 max. |
| Cr | 18.0 – 20.0 |
| Element | SS 304H |
| Melting Point | 1400 ℃ |
| Density | 8 |
| Hardness (Brinell) | 201 |
| Yield Strength (0.2%Offset) | 205 |
| Tensile Strength | 515 |
| Elongation | 40 |
|
Type |
SIZES (Inches) |
ISO Tolerance |
SIZES (mm) |
|---|---|---|---|
|
Peeled and Polished |
1.50″ to 6.00″ |
h11-DIN 1013 |
40.00 to 150.00 |
|
Cold Drawn and Ground |
5/6″ to 2.50″ |
h9-h8-h11-h10 |
10.00 to 75.00 |
|
Cold Drawn and Polish |
1/8″ to 3.00″ |
h9-h8-h11-h10 |
3.00 to 75.00 |
|
Peeled and Ground |
3/4″ to 2.00″ |
h10-h9-h11 |
20.00 to 50.00 |
| STANDARD | UNS | WERKSTOFF NR. |
| SS 304H | S30409 | 1.4301 |
Stainless Steel 304H has a higher carbon content (0.04–0.10%), which enhances its strength and heat resistance, making it suitable for high-temperature applications compared to 304 and 304L.
Industries such as petrochemical, power generation, chemical processing, and construction use Stainless Steel 304H for applications like heat exchangers, boilers, pressure vessels, and structural components.
Yes, Stainless Steel 304H is designed for excellent performance in high-temperature environments, maintaining strength and corrosion resistance in conditions up to 870°C (1600°F).
304H bars and rods are applied to power generation, chemical processing, and structural high-temperature applications. Typical applications are in superheaters, heat exchangers, boiler parts, and furnace components. It’s well suited for pressure vessels and piping that undergo thermal cycling. It’s used by industries that demand a balance between corrosion resistance and high-temperature strength.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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