Aiman Metals is a reputable manufacturer and supplier of top-notch stainless steel products, proudly based in Kuala Lumpur, Malaysia. They specialize in Stainless Steel 321H Square Bars and Rods, providing high-performance materials that excel in high-temperature and pressure settings. Renowned for their dedication to quality, prompt delivery, and customer satisfaction, Aiman Metals serves a diverse array of industries, including petrochemical, power generation, and aerospace. With a robust distribution network and deep technical know-how, they ensure that their 321H products meet international standards and perform reliably in even the toughest industrial applications throughout Malaysia and Southeast Asia.
Stainless Steel 321H is a high-carbon variant of grade 321, stabilized with titanium to guard against intergranular corrosion. Its makeup features chromium (17–19%), nickel (9–12%), carbon (0.04–0.10%), and titanium (at least five times the carbon content), along with iron, manganese, and silicon. This alloy boasts impressive resistance to oxidation and creep at high temperatures. It has a tensile strength of about 515 MPa, a yield strength of roughly 205 MPa, and good ductility. SS 321H performs exceptionally well under continuous heat exposure, making it a great choice for high-temperature structural applications.
Stainless Steel 321H Square Bars Specification :
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Size : Tolerance: H8, H9, H10, H11, H12, H13K9, K10, K11, K12
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 321H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321H | 515 | 205 | 40 | 95 | 217 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 321H | 1.4438 | S32109 |
| SQUARES | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 321H Square Bars and Rods are mainly utilized in high-temperature settings due to their superior strength and oxidation resistance. Industries like aerospace, petrochemical, oil and gas, and power generation rely on 321H for crafting heat exchangers, furnace components, boiler parts, jet engine components, and exhaust systems. The alloy’s resistance to intergranular corrosion makes it perfect for applications that experience frequent thermal cycling. It’s also widely used in expansion joints, refineries, and chemical processing equipment. With outstanding mechanical properties at elevated temperatures, 321H is a go-to choice for demanding applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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