Aung Metals, a well-respected manufacturer and supplier located in Naypyidaw, Myanmar, is all about providing top-notch Stainless Steel 431 Hollow Bars. With a strong focus on excellence and precision engineering, Aung Metals delivers products that meet international standards for strength, durability, and resistance to corrosion. Their stainless steel hollow bars are highly regarded for their outstanding performance in tough industrial settings. Thanks to their state-of-the-art manufacturing facilities and a talented technical team, Aung Metals guarantees consistent product quality and timely delivery, serving a wide range of clients in the mechanical, construction, marine, and engineering sectors.
Stainless Steel 431 Hollow Bar is a martensitic, high-chromium steel that contains about 15–17% chromium, 1.25–2.5% nickel, and a maximum of 0.20% carbon, along with small amounts of manganese, silicon, phosphorus, and sulfur. It boasts remarkable strength, hardness, and moderate resistance to corrosion. This alloy shows a tensile strength of around 850–1000 MPa, a yield strength of about 600 MPa, and good impact toughness. With a Rockwell hardness rating of 30–40 HRC, SS 431 maintains excellent mechanical stability even under high stress and temperature conditions.
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
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 347 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-13.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| SS 347H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347 | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347 | 1.4961 | S34700 |
| SS 347H | 1.4550 | S34709 |
The primary alloying element in Stainless Steel 347 is niobium (Nb), which stabilizes the material against carbide precipitation during welding and high-temperature exposure. This enhances its resistance to intergranular corrosion and improves its overall high-temperature strength.
Stainless Steel 347 is most suitable for applications in the temperature range of 800°C to 1500°F (427°C to 815°C). This range allows it to maintain its strength, corrosion resistance, and stability, particularly in high-temperature environments like furnaces.
Typical dimensions of a Stainless Steel 347 flat bar range from 0.25 inches (6 mm) to 6 inches (150 mm) in thickness and 1 inch (25 mm) to 12 inches (300 mm) in width. Custom sizes are also available.
Stainless Steel 431 Hollow Bars find their place in various industries that demand high strength, toughness, and corrosion resistance. You’ll often see them used in the manufacturing of pump shafts, valve components, marine hardware, aircraft parts, and turbine blades. Their excellent machinability and resistance to seawater and mild chemicals make them popular in the oil and gas, chemical processing, and power generation sectors. These bars are perfect for applications that face both mechanical stress and corrosive environments, making them a dependable choice for precision engineering, automotive components, and structural equipment in challenging working conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Naypyidaw, Myanmar
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