Al Summan Metals, a highly regarded manufacturer and supplier based in Dubai, UAE, is dedicated to delivering premium-quality Stainless Steel 431 Hollow Bars. With a firm commitment to excellence and precision engineering, Al Summan Metals produces goods that comply with international standards for strength, durability, and corrosion resistance. Their stainless steel hollow bars are widely praised for their exceptional performance in demanding industrial environments. Owing to their advanced manufacturing facilities and a skilled technical team, Al Summan Metals ensures reliable product quality and on-time delivery, catering to a broad spectrum of clients across the mechanical, construction, marine, and engineering sectors.
Stainless Steel 431 Hollow Bar is a martensitic, high-chromium steel featuring roughly 15–17% chromium, 1.25–2.5% nickel, and up to 0.20% carbon, together with minor quantities of manganese, silicon, phosphorus, and sulfur. It offers outstanding strength, hardness, and moderate corrosion resistance. This alloy delivers a tensile strength of approximately 850–1000 MPa, a yield strength near 600 MPa, and solid impact toughness. Featuring a Rockwell hardness of 30–40 HRC, SS 431 retains excellent mechanical stability even under demanding 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 |
Niobium (Nb) serves as the main alloying element in Stainless Steel 347, stabilizing the material against carbide precipitation during welding and exposure to high temperatures. This boosts its resistance to intergranular corrosion and strengthens its overall performance at high temperatures.
Stainless Steel 347 works best for applications within the temperature span of 800°C to 1500°F (427°C to 815°C). Within this span, it retains its strength, resistance to corrosion, and stability, especially in high-heat settings such as furnaces.
Stainless Steel 347 flat bar generally comes in thicknesses spanning 0.25 inches (6 mm) to 6 inches (150 mm) and widths spanning 1 inch (25 mm) to 12 inches (300 mm). Custom sizes can also be supplied.
Stainless Steel 431 Hollow Bars are used across a range of industries requiring high strength, toughness, and resistance to corrosion. They are commonly employed in producing pump shafts, valve components, marine hardware, aircraft parts, and turbine blades. Thanks to their outstanding machinability and ability to withstand seawater and mild chemicals, they are widely favored in the oil and gas, chemical processing, and power generation sectors. These bars are ideally suited for uses that encounter both mechanical stress and corrosive conditions, making them a reliable option for precision engineering, automotive components, and structural equipment operating in demanding environments.
We supply products accompanied by both mill test certificates and third-party test certificates, guaranteeing the highest standards of quality and compliance.
Al Summan Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Dubai, UAE
Copyright 2024 Al Summan Metals. All rights reserved
