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SS 321 Black Round Bar

Name: SS 321 Black Round Bar
Brand: HITRATNA METALS
Price: 280.0 INR
Availability: InStock

Price 280.0 INR/ Kilograms

Get a Price/Quote

MOQ : 100 Kilograms

SS 321 Black Round Bar Specification

Recyclable
Yes

Size
Wide size range as per requirement

Material Composition %
(Typical) Cr 17-19%, Ni 9-12%, Ti stabilized

Hardness
Max 217 HB (Brinell)

Heat Resistance
Yes

Diameter
Available in a wide size range (typically 6mm to 350mm or more)

Coating Type
Black (No additional coating, mill surface)

Chemical Composition
Stainless Steel 321 (Stabilized with Titanium)

Product Form
Solid Round Bar

Tensile Strength
515 MPa Min (varies with standard and condition)

Temper
Annealed/As Rolled

Width
Custom/Varied

Corrosion Resistant
Excellent resistance to intergranular corrosion

Product Name
SS 321 Black Round Bar

Steel Type
Stainless Steel

Steel Product Type
Round Bar

Grade
321

Thickness
As per specified diameter

Shape
Round

Steel Standard
ASTM A276/A479, ASME SA276/SA479

Surface
Black (Mill finish, not polished)

Composition
Stainless Steel, with Titanium Stabilizer

Application
Construction, Engineering, Industrial Fabrication, Automotive, Petrochemical, Oil & Gas

Dimension (L*W*H)
Custom Length x Diameter (as per order)

Weight
Depends on size and length

Color
Black (due to mill scale)

Material Grade
SS 321

Finish Type
Black / Mill Finish

Usage
Premium Quality, Industrial Grade, Durable & Reliable, for various mechanical and structural uses

Custom Cutting
Available as per order specification

Trusted Supplier
Mitrantna Metals (as per image branding)

Compliance
Compliant to international standards ASTM/ASME

Density
7.9 g/cm3

Machinability
Good (improved over other stainless steels due to titanium stabilizer)

Availability
Ex-stock and on order (as per supplier)

Non-Magnetic
Slightly magnetic in cold worked condition

Quality Assurance
Premium Quality, Durable and Reliable

Weldability
Excellent (without risk of carbide precipitation)

SS 321 Black Round Bar About

SS 321 is a titanium-stabilized austenitic stainless steel offering excellent corrosion resistance and reliable performance at elevated temperatures. It is particularly suitable for applications involving heat and welded components.

Heat exchangers, aircraft components, exhaust systems, power-generation equipment, furnace components, process equipment, and high-temperature piping.

Premium Quality Stainless Steel 321 Black Round Bar

Engineered for robustness and longevity, SS 321 Black Round Bars feature a titanium-stabilized composition, ensuring excellent resistance to intergranular corrosion and high heat environments. Their black mill finish, coupled with wide size availability and custom-cutting services, suit a spectrum of industrial and structural applications. All products are assured to comply with international standards, reinforcing trust in their superior performance and reliability.

Excellence in Machinability and Weldability

SS 321's improved machinability and easy weldability are attributed to its precise titanium stabilization, which also prevents carbide precipitation. This allows for seamless fabrication in mechanical and construction projects. With slightly magnetic properties only in cold-worked conditions and annealed/rolled tempers available, these bars provide great flexibility for a range of engineering and manufacturing needs.

Applications Across Industries

Ideal for use in petrochemical plants, automotive components, and general industrial fabrication, the SS 321 Black Round Bar excels wherever strength and corrosion resistance are key. Its high heat resistance up to 900C makes it a preferred choice for demanding sectors, while its recyclable nature aligns with sustainability goals. Custom sizing ensures a precise fit for each application.

FAQ's of SS 321 Black Round Bar:

Q: How does the titanium stabilizer enhance the machinability and weldability of SS 321 Black Round Bar?

A: The titanium stabilizer in SS 321 prevents carbide precipitation during welding, maintaining grain boundary integrity and allowing for excellent weldability without the risk of intergranular corrosion. It also improves machinability compared to other stainless steels, ensuring a smoother fabrication process.

Q: What is the typical process for ordering a custom size SS 321 Black Round Bar from Mitrantna Metals?

A: You can specify your required diameter, length, and temper (annealed or as rolled) when placing an order with Mitrantna Metals. The company offers custom cutting to match your project specifications, with availability ex-stock or upon request.

Q: Where can SS 321 Black Round Bars be used?

A: These round bars are widely used in industries such as construction, oil & gas, petrochemical, industrial fabrication, and automotive components, thanks to their robust mechanical properties, high heat resistance, and corrosion resistance.

Q: What are the benefits of choosing SS 321 Black Round Bar over other stainless steels?

A: SS 321 Black Round Bar provides excellent resistance to intergranular corrosion, superior weldability, and sustained performance at high temperatures (up to 900C). The black mill finish offers durability, and the bars are available in a wide range of sizes for versatile applications.

Q: Is the SS 321 Black Round Bar compliant with international quality standards?

A: Yes, SS 321 Black Round Bars from Mitrantna Metals are compliant with ASTM A276/A479 and ASME SA276/SA479 standards, ensuring premium quality and reliability in critical industrial environments.

Q: How does the black finish of SS 321 Round Bar differ from a coated surface?

A: The black finish of SS 321 Round Bar is a natural mill scale resulting from the manufacturing process and does not involve any additional coating. This finish provides a degree of surface protection while retaining the bar's full mechanical and corrosion-resisting properties.

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