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S355JO Round Bar Overview
S355JO round bars are high-strength structural steel bars designed for heavy-duty applications requiring superior toughness and weldability . These bars comply with EN 10025 standards, ensuring reliable performance in extreme conditions .
Known for their excellent yield strength, outstanding toughness at sub-zero temperatures, and superior weldability , these steel bars are perfect for use in general engineering, structural frameworks, construction equipment, and offshore applications. Engineered for both strength and versatility, S355JO steel round bars feature a minimum yield strength of 355 MPa and excellent cold-forming capabilities, making them ideal for projects where durability, impact resistance, and cost-effectiveness are essential.
Why Choose Our S355JO Round Bars?
- ✔ Certified Quality Materials: We stock only EN 10025-2 compliant S355JO round bars with assured mechanical properties and dimensional accuracy.
- ✔ Widest Range in Stock: Available in diameters from 16mm to 350mm with custom cut-to-length services.
- ✔ Global Export Network: Supplying to over 70+ countries including UAE, Saudi Arabia, Europe, USA, and Southeast Asia.
- ✔ Competitive Pricing with Fast Dispatch: We offer market-driven, transparent pricing structures and efficient dispatch schedules — making sure your bulk and urgent orders reach on time, every time.
- ✔ Trusted Quality Assurance: Every S355JO round bar undergoes strict in-house testing for mechanical strength, dimensional conformity, and surface quality. Third-party inspection can also be arranged upon customer request to meet project-specific documentation and compliance needs.
Specifications of S355JO Round Bars – EN 10025 Steel
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size | 5 mm To 500 mm |
| Diameter | 0.1 mm to 100 mm |
| Length | 100 mm To 6000 mm Long & Above |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Form | Round, Square, Hex (A/F),Flate, Rectangle, Billet, Ingot, Forging Etc. |
| Stainless Steel | ASTM A-479, A-182, 304, 304L,304H,304S, 316, 316L,316 Ti, 316H, 309, 310, 310S, 317L, 321, 347, 409, 410, 420, 430, 440, 446, 904L. etc. |
| Duplex Steel | 2205, 31803, 32750, 32760, 2101, 2304. |
| Alloy Steel | A-182 - F5, F9, F11, F12, F21, F22 & F91 |
| Special Grade | Stainless Steel 17-4 PH, Alloy 800, Alloy 600. Hastelloy C276. |
| Carbon Steel | A 105, LF 2, Duplex Steel. |
Mechanical Properties of S355JO Round Bars — Yield, Tensile & Elongation Values
| Nominal thickness (mm): |
to 3 | 3 – 100 | 100 – 150 | 150 – 250 | ||||
| Rm – Tensile strength (MPa) Flat and long products |
510-680 | 470-630 | 450-600 | 450-600 | ||||
| Nominal thickness (mm): |
to 16 | 16 – 40 | 40 – 63 | 63 – 80 | 80 – 100 | 100 – 150 | 150 – 200 | 200 – 250 |
| ReH – Minimum yield strength (MPa) Flat and long products |
355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
| KV – Impact energy (J) longitud., |
-20° | 0° | +20° | |||||
| 27 | 27 | 27 | ||||||
| Nominal thickness (mm): |
Mar-40 | 40 – 63 | 63 – 100 | 100 – 150 | 150 – 250 | |||
| A – Min. elongation Lo = 5,65 √ So (%) parallel, |
22 | 21 | 20 | 18 | 17 | |||
| Rm – Tensile strength (MPa) Flat and long products |
to 1 | 1 – 1.5 | 1.5 – 2 | 2 – 2.5 | 2.5 – 3 | |||
| Rm – Tensile strength (MPa) Flat and long products |
14 | 15 | 16 | 17 | 18 |
S355JO Round Bar Equivalent Grades
| DIN,WNr | JIS | AFNOR | BS | EN | UNI | NBN | UNE | GB | ISO | IS |
| St52-3U | SS490B | E36-3 | 50C | Fe510C | Fe510C | AE355C | AE355C | 16Mn | E355C | Fe570HT |
S355JO Round Bar Chemical Composition
| C | Si | Mn | P | S | N | Cu | CEV |
|---|---|---|---|---|---|---|---|
| 0.22 max | 0.55 max | 1.6 max | 0.035 max | 0.035 max | 0.012 max | 0.55 max | 0.47 max |
Applications of S355J0 Round Bars
S355J0 round bars are widely utilized in industries demanding robust and reliable performance. Typical applications include:
- ● Structural frameworks for bridges, buildings, and platforms
- ● Industrial fabrication, frames, and supports
- ● Offshore and marine structures needing high impact resistance
- ● Heavy-duty machinery, pressure vessels, and cranes
- ● General engineering applications demanding high yield strength
- ● Power & Energy Sector
India, Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Venezuela, Ecuador, Netherlands, Brazil, Colombia, Ghana, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Qatar, Russia, Vietnam, South Africa, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago, Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia.
Mumbai, Thane, Navi Mumbai, Pune, Pimpri-Chinchwad, Vadodara, Kolkata, Gurgaon, Ahmedabad, New Delhi, Bengaluru, Chennai, Surat, Bhopal, Ulsan, Faridabad, Houston, Dubai, Seoul, Hyderabad, Singapore, Abu Dhabi, Tehran, Calgary, Noida, Riyadh, London, Coimbatore, Jakarta, Istanbul, Bangkok, Kuwait City, Sharjah, Muscat, Edmonton, Busan, Mexico City, Doha, Jeddah, Aberdeen, Cairo, Geoje-si, Perth, Santiago, Chandigarh, Indore, Kuala Lumpur, Rio de Janeiro, Dammam, Melbourne, Madrid, La Victoria, Bogota, Lahore, Los Angeles, Algiers, Chiyoda, Ankara, Ho Chi Minh City, Toronto, Hong Kong, Rajkot, Brisbane, Petaling Jaya, Ernakulam, Secunderabad, Gimhae-si, Al Jubail, Port-of-Spain, Thiruvananthapuram, Milan, Atyrau, Lagos, Hanoi, Howrah, Sydney, Ahvaz, Karachi, New York, Caracas, Vung Tau, Al Khobar, Manama, Montreal, Granada, Courbevoie, Visakhapatnam, Ludhiana, Moscow, Dallas, Haryana, Colombo.
Frequently Asked Questions (FAQ) About S355JO round bar
Both are from the EN 10025-2 family. The key difference lies in their impact test temperatures — S355JO is tested at 0°C while S355J2 is tested at -20°C.
Yes, S355JO round bars offer excellent weldability and can be machined smoothly for various structural and engineering applications.
For ready stock sizes, dispatch happens within 2-3 working days. For custom requirements, it usually takes 7-10 days.
They have moderate corrosion resistance but may need protective coatings in harsh environments.
Yes, we offer cut-to-length, machining, and threading services.
