Stainless Steel 321 Round Bars

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Stainless Steel 321 Round Bars Specification

Diameter
3mm to 400mm

Product Form
Bars, Rods

Material Composition %
C: 0.08%, Cr: 17-19%, Ni: 9-12%, Ti: 5xC%, Mn: 2%, Si: 1%, P: 0.045%, S: 0.03%

Hardness
201 HB max

Coating Type
Uncoated

Heat Resistance
Suitable for temperatures up to 870C (1600F)

Tensile Strength
515 MPa min

Size
Custom sizes available

Corrosion Resistant
Yes, good resistance to intergranular corrosion

Recyclable
Yes

Product Name
Stainless Steel 321 Round Bars

Steel Type
Stainless Steel

Steel Product Type
Round Bar

Grade
321

Thickness
Available from 3mm to 400mm

Shape
Round

Steel Standard
ASTM A276 / ASTM A479

Surface
Bright, Black, Peeled, Polished, Turned

Composition
Chromium-Nickel Austenitic Stainless Steel with Titanium

Application
Construction, Oil & Gas, Petrochemical, Power Plant, Automobile, Shipbuilding, Fabrication

Dimension (L*W*H)
Customized, Length up to 6 meters

Weight
As per size and length

Color
Metallic Silver

Material Grade
321

Finish Type
Bright, Polished, Black, Peeled

Usage
Structural and engineering applications, manufacturing components

About Stainless Steel 321 Round Bars

What Are Specification Stainless Steel 321 Round Bars?

Standard	ASTM A276 / A479, ASME SA276 / A479
Round Bar Size	3mm~ 800mm
Square Bar Size	4mm* 4mm ~100mm* 100mm
Flat Bar Size	2mm ~ 100mm
Hex Bar Size	2mm ~ 100mm
Angle Size	3mm* 20mm* 20mm~ 12mm* 100mm* 100mm
Thickness	50 mm to 6000 mm Long
Length	1 To 6 Meters, Custom Cut Length
Form	Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc

Equivalent material Of Stainless Steel 321 Round Bars?

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10

Chemical Composition Of Stainless Steel 321 Round Bars?

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(C+N) 0.70 max

Mechanical Properties Of Stainless Steel 321 Round Bars?

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1454 C (2650 F)	Psi 75000 , MPa 515	Psi 30000 , MPa 205	35 %

Premium Material for Demanding Applications

Stainless Steel 321 Round Bars are crafted from a stabilized chromium-nickel austenitic alloy with titanium, designed specifically for demanding environments. This material delivers excellent resistance to intergranular corrosion and withstands high temperatures, making it ideal for industries such as petrochemical, power generation, and shipbuilding. Its versatility in form and finish enables custom solutions for structural and mechanical projects.

Customizable and Reliable Performance

Available in diameters ranging from 3mm to 400mm and lengths up to 6 meters, Stainless Steel 321 Round Bars can be tailored to meet precise requirements. Each bar exhibits robust mechanical properties, including a minimum tensile strength of 515 MPa and elongation of around 40%. Delivered in export-grade packaging, their bright, polished, black, or peeled surface finish ensures both durability and aesthetic value in various industrial applications.

FAQs of Stainless Steel 321 Round Bars:

Q: How are Stainless Steel 321 Round Bars typically used in industry?

A: These round bars are widely used for structural and engineering applications, manufacturing components across construction, oil & gas, petrochemical, power plant, automobile, shipbuilding, and fabrication sectors due to their excellent heat resistance and corrosion protection.

Q: What is the process for manufacturing Stainless Steel 321 Round Bars?

A: Manufacturing involves melting the chromium-nickel stainless alloy, followed by titanium stabilization, hot or cold rolling into round bars, and finishing (bright, polished, black, peeled, or turned) as per ASTM A276/A479 standards. Custom lengths and diameters are produced as required.

Q: When should Stainless Steel 321 Round Bars be chosen over other stainless grades?

A: These bars are preferred when resistance to intergranular corrosion and the ability to withstand high temperatures (up to 870C) are critical, especially in environments with continuous or intermittent heating, or where weld decay may be a concern.

Q: Where can customized Stainless Steel 321 Round Bars be sourced?

A: They are available directly from manufacturers, suppliers, exporters, and traders across India, with customization possible in dimensions, lengthup to 6 metersand surface finish, ensuring suitability for specific project requirements.

Q: What are the benefits of the titanium addition in Stainless Steel 321 Round Bars?

A: Titanium improves resistance to carbide precipitation during welding, enhances machinability, and helps maintain the alloys strength and corrosion-resistant properties at elevated temperatures.

Q: How do the magnetic properties of Stainless Steel 321 Round Bars affect their usage?

A: Being non-magnetic in the annealed condition, these bars are suitable for applications requiring low magnetic permeabilityimportant in electronic industries and for certain engineering applications.

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