Stainless Steel 347H Round Bar Supplier
Multinox Inc — Niobium Stabilised for Heat — ASTM A276 Stainless Steel 347H Round Bars Certified to UNS S34709, Stocked & Shipped Worldwide.
Multinox INC is a prominent 321H Stainless Steel Round Bars manufacturer and supplier specialized in offering high-quality SS 321H Bars and 321H SS Rods to a wide base of clients across a number of industries. We are one of the leading SS 321H Bars Suppliers to food, chemical and electrical industries.
We stock a wide range of Stainless Steel 321H Round Bars as one of the major grade of Stainless Steel Round Bars in different diameters and, thickness to match our clients’ specifications. Our SS 321H Round Bars are made especially with the use of sophisticated machinery to meet the needs of our clients. Our Stainless Steel 321H Forged Bars are available to our clients in different forms and sizes at our center at best price.
Our Stainless Steel 321H Round Bars are lightweight and simple to handle having high resistance to chemicals. We at Multinox INC is committed to delivering Stainless Steel 321H Square Bars and Stainless Steel 321H Polished Bars to our valuable clients from wide range of industries that deal in sulfur, acids, dyes and nitrating mixtures.
We also offer 321H Stainless Steel Threaded Bars, 321H Stainless Steel Flat Bars, and SS 321H Square Bars to our customers for their different applications in Chemical and petrochemical processing and many other industrial applications. We are frequent suppliers of SS 321H Cold Drawn Bars to the automobile sector. We excel in providing SS 321H Hex Bars which has great hardness and durability.
Please contact us today for Stainless Steel 321H Round Bars & Rods along with SS 321 Round Bars, SS 304 Round Bars, SS 304L Forged Bars that have better stress-to-rupture, tensile strength and better creep at increased temperatures.
Available Forms & Types
Most Common
Round Bars
Cold drawn, centreless ground & polished. Used in shafts, fasteners, machined components.
- OD: 4mm to 500mm
- Bright / Polish / Black finish
- Length: 1–6 metres
Precision
Hex Bars
Across-flat 18mm–57mm. Ideal for bolt, nut & valve body machining applications.
- 18mm – 57mm A/F
- Cold drawn condition
- Non-magnetic grade
Structural
Square Bars
Used in structural fabrication, tooling and engineering. Custom sizes available.
- 18mm – 47mm
- Bright / Rough Turned
- Custom sizes on request
Wide Range
Flat Bars
Width ½" to 10", thickness 2mm to 150mm. Sheared & edged or hot-rolled condition.
- Width: ½" to 10"
- Thickness: 2–150mm
- Custom width available
Hollow
Hollow Bars
Seamless hollow bar for bushings, sleeves & valve bodies. Saves machining time.
- OD: 4mm to 100mm
- Various wall thickness
- Centreless ground
High Strength
Forged Bars
Hot forged for superior grain structure. Heavy-duty industrial and aerospace use.
- 15mm to 300mm
- Ultrasonic tested
- Rough turned finish
JIS SUS 347H Round Bar — Specifications
Stainless Steel 347H Round Bars are supplied solution-annealed per ASTM A276 — every heat certified with high-temperature test data.
| Grade | SS 347/347H |
| Specification | EN, DIN, JIS, ASTM, BS, ASME, AISI, IS |
| Standard | ASTM A276/ASME SA276, ASTM A479/ASME SA479 & ASTM A164/ASME SA164 |
| Round Bars | Outside Diameter in the range of 4mm to 500mm above as per the customer requirement. |
| Round Bars | Outside Diameter in the range of 4mm to 500 mm above as per the customer requirement. |
| Hex Bars | 18mm – 57mm (11/16″ to 2-3/4″) above as per the requirement. |
| Square Bars | 18mm – 47mm (11/16″ to 1-3/4″) above as per the requirement. |
| Flat Bars | 1/2” to 10” in thickness range of 2mm to 150mm |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Finish | Black, Bright. Peeled and Polished, Solution annealed. |
| Technique | Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
UNS S34709 Round Bar Chemical Composition
Niobium carbides form inside Stainless Steel 347H Round Bars to grab carbon before chromium can — intergranular corrosion never gets a chance.
Mn
2.0 max
Manganese
C
0.04 – 0.10%
Carbon
Cr
17.0 – 20.0%
Chromium
P
0.03 max
Phosphorus
Ni
9.0 – 13.0%
Nickel
Si
0.75 max
Silicon
S
0.30 max
Sulphur
Cb/Ta
Min: 10 × C
Max: 1.0%
Max: 1.0%
Columbium / Tantalum
view Equivalent Grades of WNR 1.4961 Round Bar
S34709, 1.4961, X6CrNiNb18-12 or SUS 347H — Stainless Steel 347H Round Bars match every international code your heat-duty project lists.
Grade
SS 347H
Material
WNR
1.4961
Werkstoff No.
UNS
S34709
UNS
JIS
SUS 347H
Japanese Standard
EN
X6CrNiNb18-12
European Standard
UNS S34709 Round Bar Mechanical Properties
Stainless Steel 347H Round Bars resist creep deformation through thousands of hours in superheater and boiler service.
| Grade | Yield Strength (MPa) min | Tensile Strength (MPa) min | Elongation min | Hardness MAX | Hardness MAX |
|---|---|---|---|---|---|
| 347H | 30 (205) | 75 (515)ksi | 40(% in 50mm) | 95 Rockwell B | 201Brinell |
check Weight Chart of ASTM A276 Stainless Steel 347H Round Bar
| Size (mm) | Round (Kg/mtr) | Hex (Kg/mtr) | Square (Kg/mtr) |
|---|---|---|---|
| 2 | 0.025 | 0.027 | 0.031 |
| 11 | 0.754 | 0.822 | 0.952 |
| 4 | 0.100 | 0.108 | 0.125 |
| 17 | 1.801 | 1.991 | 2.275 |
| 6 | 0.224 | 0.248 | 0.283 |
| 20 | 2.493 | 2.755 | 3.149 |
| 8 | 0.399 | 0.441 | 0.504 |
| 22 | 3.016 | 3.331 | 3.810 |
| 13 | 1.053 | 1.148 | 1.330 |
| 26 | 4.213 | 4.594 | 5.321 |
| 24 | 3.590 | 3.967 | 4.534 |
| 32 | 6.382 | 7.053 | 8.061 |
| 28 | 4.886 | 5.400 | 6.172 |
EN X6CrNiNb18-12 Round Bar Tolerance Chart
| Diameter (mm) | Tolerance (mm) |
|---|---|
| 101 – 120 | ±1.50 |
| 161 – 200 | ±2.50 |
| 121 – 160 | ±2.00 |
| 36 – 50 | ±0.80 |
| 51 – 80 | ±1.00 |
| 16 – 25 | ±0.50 |
| 26 – 35 | ±0.60 |
| 8 – 15 | ±0.40 |
Recent ASTM A276 Stainless Steel 347H Round Bar Export Deliveries
🇸🇦
Saudi Aramco Total
Al Jubail, Saudi Arabia
25mm Diameter Bright Bars, Stainless Steel 347H
Delivered in 7 days
🇺🇸
Hess Corporation
New York City, USA
UNS S34709 Peeled Bars, 50mm Diameter
Delivered in 14 days
🇬🇧
Shell PLC
London, United Kingdom
EN X6CrNiNb18-12 Turned Bars, 22mm Diameter
Delivered in 14 days
🇦🇪
ADNOC
Abu Dhabi, UAE
Cold Drawn Bars, 16mm Diameter, Stainless Steel 347H
Delivered in 5 days
🇿🇦
Sasol Limited
Johannesburg, South Africa
100–200mm Diameter Hot Rolled Bars, Stainless Steel 347H
Delivered in 21 days
🇩🇪
BASF SE
Ludwigshafen, Germany
WNR 1.4961 Polished Bars, 40–80mm Diameter
Delivered in 18 days
stock Availability of UNS S34709 Round Bar
| Stainless Steel 347H Bright Round Bar | ASTM A276 Stainless Steel 347H Ground Round Bar |
| UNS S34709 Black Round Bar | WNR 1.4961 Polished Round Bar |
| EN X6CrNiNb18-12 Peeled Round Bar | JIS SUS 347H Turned Round Bar |
| Stainless Steel 347H Hot Rolled Round Bar | ASTM A276 Stainless Steel 347H Cold Drawn Round Bar |
| UNS S34709 Polished Round Bar | WNR 1.4961 Peeled Round Bar |
| EN X6CrNiNb18-12 Ground Round Bar | JIS SUS 347H Bright Round Bar |
| Stainless Steel 347H Black Round Bar | ASTM A276 Stainless Steel 347H Turned Round Bar |
| UNS S34709 Hot Rolled Round Bar | WNR 1.4961 Cold Drawn Round Bar |
WNR 1.4961 Round Bar Latest Prices
Multinox INC offers WNR 1.4961 Round Bars at one of the most competitive prices in India. Request the latest Pricelist using the contact form here.