As a leading manufacturer and exporter of European standard H-beams, GNEE Steel is committed to supplying high-quality EN 10025-2 S355JR H beam steel for global construction, bridge, and heavy machinery projects. As a high-strength, non-alloy structural steel with excellent weldability, S355JR is widely used in international engineering applications.
To assist engineers and manufacturers worldwide in accurate grade selection and flexible substitution, this article provides an in-depth exploration of S355JR H beam steel equivalents under different international standards (such as ASTM, GB, JIS), and a detailed analysis of its chemical composition, mechanical properties, and key application scenarios.
What is the S355JR Structural Steel Beam
S355JR is a European hot-rolled structural steel grade with a minimum yield strength of 355 MPa. Equivalent grades in other standards provide similar properties for international procurement.
Common equivalents include ASTM A572 Grade 50 (USA), DIN ST52-3 (Germany), JIS SM490A (Japan), and GB Q345B (China). Gnee Steel provides corresponding certificates for S355JR, EN 10025-2 S355J0, and EN 10025-2 S235J0, ensuring compliance with CE marking.
Before each batch of H beams leaves the factory, GNEE's professional quality inspection team conducts strict secondary measurements according to international standards.
The inspection covers height and flange width tolerances, web and flange thickness accuracy, web centering, straightness, and surface condition including scale and coating quality.
This ensures that every H-beam delivered to your project site meets perfect geometric dimensions and high engineering compatibility standards.
Equivalent to S355JR H beam
S355JR has direct equivalents based on strength and toughness. The table below maps it to key standards:
|
Standard |
Equivalent Grade |
Notes |
|---|---|---|
|
ASTM (USA) |
A572 Grade 50 |
Similar strength for construction. |
|
DIN (Germany) |
ST52-3 |
Equivalent mechanical properties. |
|
JIS (Japan) |
SM490A |
For welded structures. |
|
GB (China) |
Q345B |
Matches yield and impact. |
|
NFA (France) |
E36-2 |
For construction applications. |
|
UNI (Italy) |
Fe 510 B |
Comparable tensile strength. |
|
BS (UK) |
50 B |
For welded structures. |
|
UNE (Spain) |
AE 355 B |
Similar characteristics. |
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Global Equivalents and 2026 Price Trends for Low-Alloy High-Strength Steel
| Standard / Region | Grade / Equivalent Name | 2026 Main Price Range (Hot-Rolled H-Beams / Plates) | 2026 Price Trend & Market Analysis |
|---|---|---|---|
| European Standard (widely used globally) | EN 10025-2 S355JR | Europe: €650 – €750 / ton China Export FOB: $490 – $540 / ton |
Stable with upward trend. EU CBAM (Carbon Border Adjustment Mechanism) has increased import costs, prompting European mills to raise prices, while Asian exports focus on high cost-performance. |
| American Standard (preferred for US projects) | ASTM A572 Grade 50 | USA: $900 – $1,050 / ton | High-level fluctuation. Prices remain elevated due to North American tariff protection and high domestic energy costs. Recent US mill spring maintenance has tightened supply, keeping prices firm in the short term. |
| Chinese Standard (core of Asia-Pacific supply chain) | GB/T 1591 Q345B (upgraded to Q355B) | Domestic China: ¥3,600 – ¥4,100 / ton | Bottoming and rebounding. Controlled crude steel output and steady growth in new energy and infrastructure have reversed price decline, creating an excellent low-price procurement window. |
| Japanese Standard (for Asian shipbuilding / engineering) | JIS G3106 SM490A | FOB Asia Ports: $510 – $560 / ton | Narrow fluctuation. Mainly used for Asian or Japanese overseas projects. Prices closely follow Chinese exports; minor USD adjustments occur due to exchange rate fluctuations. |
| Historical / Obsolete Grades | DIN 17100 ST52-3 NF A35-501 E36-2 ISO / old Italian UNE / old Spanish BS 4360 B50 B |
Reference S355JR pricing | Material conversion required. These grades are rarely produced; internationally, suppliers like GNEE provide S355JR directly with official "equivalent material certification" for project acceptance. |
What is a steel grade S355JR equivalent to?
S355JR equivalent grades have very close chemical composition and mechanical properties to that of S355JR steel. Both the S355JR equivalent grades Q345B, A572 Gr 50, ST52-3, SM490B and S355JR steel are main products of Gnee steel.
Is S355 equivalent to A36?
S355JR and A36 are not directly equivalent, as S355JR has higher strength (yield 355 MPa vs. A36's 250 MPa) and guaranteed impact toughness, making it closer to ASTM A572 Grade 50 than A36. A36 is often equivalent to S235JR (yield 235 MPa), a lower EN grade.
What is steel grade S355JR?
Steel grade S355JR is used to manufacture hot-rolled flat and long products, which are subsequently used when producing steel building structures. Classification: Non-alloy structural steel. Products: Flat and long products, semi-finished products.
What does JR mean in S355JR?
The "JR" designation means that the material has been subjected to a Charpy V-notch impact test at 208℃ and has a minimum impact strength of 27 Joules.
What material is S335JR?
S335JR - an useful structural grade steel with a minimum yield strength of 355 N/mm².
