Stainless Steel 347H Round Bars

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Stainless Steel 347H Round Bars Specification

Material Composition %
Fe Bal., C: 0.10%, Cr: 1719%, Ni: 913%, Si: 0.75%, Mn: 2.00%, S: 0.030%, P: 0.040%, Nb: 10 x C

Recyclable
Yes

Coating Type
Uncoated or as specified

Tensile Strength
515 MPa min

Diameter
6mm to 350mm (or as required)

Size
Custom sizes available

Corrosion Resistant
Yes, excellent resistance to intergranular corrosion

Product Form
Round Bars

Hardness
Rockwell B95 max

Heat Resistance
Good, up to 870C (1600F)

Product Name
Stainless Steel 347H Round Bars

Steel Type
Austenitic Stainless Steel

Steel Product Type
Round Bar

Grade
347H

Thickness
Available in multiple thicknesses (as per order)

Shape
Round

Steel Standard
ASTM A276, ASTM A479, ASME SA276, ASME SA479

Surface
Bright, Polished, Black

Composition
Stainless Steel 347H (Fe, C, Cr, Ni, Si, Mn, S, P, Nb)

Application
Construction, Chemical Processing, High Temperature Engineering, Power Generation, Petrochemical Industry

Dimension (L*W*H)
Customizable as per requirement

Weight
Dependent on size and length

Color
Silver

Material Grade
347H

Finish Type
Bright, Polish, Black

Usage
Industrial, Fabrication, Piping, Shafts, General Engineering

About Stainless Steel 347H Round Bars

What Are Specification Stainless Steel 347H 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 347H Round Bars?

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 347H	1.4961	S34709	SUS 347H	-	-	-	X7CrNiNb18-10

Chemical Composition Of Stainless Steel 347H Round Bars?

Grade	C	Mn	Si	P	S	Cr	Co + Ta	Ni	Fe
SS 347H	0.04 0.10	2 max	0.75 max	0.045 max	0.03 max	17 - 20	8xC min 1.00 max	9 - 13	62.74

Mechanical Properties Of Stainless Steel 347H 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	40 %

Superior Mechanical and Chemical Properties

347H Stainless Steel Round Bars feature elevated strength and impressive elongation, ensuring reliability under mechanical stress. Their carefully balanced composition prevents intergranular corrosion even at elevated temperatures, making them ideal for critical industrial applications. The non-magnetic, austenitic structure ensures stability and exceptional performance in demanding environments.

Customizable Dimensions for Diverse Applications

Clients can choose from diameters ranging from 6mm to 350mm and lengths between 1 to 6 meters (or per requirements). This flexibility, combined with various surface finishes such as polished, bright, or black, ensures that each round bar precisely fits project specifications in a wide array of industries from general engineering to petrochemical processing.

Optimized for High-Temperature Environments

Withstanding continuous temperatures up to 870C (1600F), 347H round bars are engineered for heat-intensive processes. Their robust design and niobium stabilization offer substantial resistance to thermal degradation, making them a preferred choice for heat exchangers, boilers, and similar high-temperature operations.

FAQs of Stainless Steel 347H Round Bars:

Q: How are Stainless Steel 347H Round Bars used in industrial applications?

A: Stainless Steel 347H Round Bars are widely used in industries such as chemical processing, power generation, and petrochemicals due to their excellent heat and corrosion resistance. They are perfect for fabrication, piping systems, shafts, and structural components operating in high-temperature or corrosive environments.

Q: What benefits do Stainless Steel 347H Round Bars offer compared to other stainless steel grades?

A: 347H round bars provide superior resistance to intergranular corrosion and improved mechanical strength at elevated temperatures, thanks to niobium stabilization. Their excellent weldability, machinability, and non-magnetic properties further make them suitable for demanding engineering and construction tasks.

Q: When should I choose Stainless Steel 347H Round Bars for my project?

A: Select 347H round bars when your application demands high strength, durability, and resistance to both corrosion and heatespecially in environments exceeding 500C or in chemical processing units subject to oxidizing conditions.

Q: Where can Stainless Steel 347H Round Bars be sourced and in what sizes?

A: These round bars are available from a variety of reputable exporters, manufacturers, suppliers, and traders across India, in custom lengths (16 meters or as required) and diameters (6mm350mm), ensuring compatibility with specific project needs.

Q: What is the manufacturing process involved for Stainless Steel 347H Round Bars?

A: 347H round bars are produced following ASTM and ASME standards, using precision rolling and heat treatment processes to ensure optimal strength, surface finish, and consistent composition. Customizations for dimensions and finish types are accommodated as per client specifications.

Q: How does the non-magnetic property of 347H round bars benefit their usage?

A: The non-magnetic austenitic structure of 347H round bars prevents magnetic interference, making them ideal for use in sensitive equipment and instrumentation often found in the chemical, power, and petrochemical industries.

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