Description of EN10025-2 / S355JR (50B) Steel
EN 10025-2 S355JR grade steel is a hot-rolled, non-alloy structural steel used for flat and long products.
We supply S355JR Steel in thicknesses from 6mm to 550mm.
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Mechanical Properties of Steel S355JR
- Tensile Strength is between 470 N/mm and 630 N/mm, depending on thickness
- Minimum Yield Strength is 355 N/mm, depending on thickness.
- Excellent impact resistance – Charpy impact tests at 20°C
S355JR Chemical Composition
This steel grade is non-alloy structural steel with high strength and good stability.
| Mn % max. | P % max. | S % max. | N % max. | C % max. | Cu % max. |
| 1.60 | 0.035 | 0.035 | 0.012 | 0.24 | 0.55 |
Other elements and differences in particular S355JR products will be detailed in the documentation. Carbon content is dependent on thickness.
Welding
S355JR steel has good welding properties, with and without pre-heating. Welding should be followed by high-temperature processing.
S355JR Typical Applications
Long and flat products of steel grade S355JR are used to manufacture profiles and parts for ground and underground equipment. This steel is also prevalent in producing steel building structures.
We supply and process steel grade S355JR for several markets and industries, including:
- Engineering
- Construction
- Heavy & Transport Engineering
- Bridge Building
- Power engineering
We carry a broad steel range, carrying 3000 tonnes of stock at any time. We supply S355JR in thicknesses from 6mm-550mm.
S355JR Steel Other Classifications:
| Country/Region | Steel Grade |
| DE | St52-3 |
| FR | E36-2 |
| UK | 50B |
| EU | S355JR (formerly Fe510B) |
| SWE | 2132-01 |
