Description of EN10025 / S275JR (43A) Steel
EN 10025 S275JR grade steel is a readily weldable low-carbon manganese steel. This is a basic structural steel with good impact resistance.
We supply S275JR Steel in thicknesses from 6mm to 550mm.
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Mechanical Properties of Steel S275JR
Mechanical Properties of Steel S275JR- Tensile Strength is between 430 N/mm and 580 N/mm, depending on thickness
- Minimum Yield Strength is 275 N/mm, depending on thickness.
- Good impact resistance
- The machinability of this material is similar to that of mild steel.
S275JR Chemical Composition
This steel grade is low-carbon manganese steel with similar machinability to mild steel.
Carbon content is dependent on thickness.
| Mn % max. | P % max. | S % max. | N % max. | C % max. | Cu % max. |
| 1.60 | 0.045 | 0.045 | 0.014 | 0.22 | 0.60 |
Welding
S275JR has good welding and cutting properties, making it easily used for general fabrication.
Welding steel grade S275JR has no restrictions and does not require preheating or subsequent heat treatment.
S275JR Typical Applications
Long and flat products of steel grade S275JR are used in manufacturing welded and riveted steel structures. This steel is also prevalent in machine-building for low-load parts, including bushings, shafts and axles.
We supply and process steel grade S275jr for several markets and industries, including:
- General Fabrication
- Engineering
- Construction
- Machine Building
- Earth Moving
- Bridge Building
- Utilities, providing steel for valves
- Oil and Gas Industry, including Offshore platforms.
- Rail Industry
We carry a broad steel range, carrying 3000 tonnes of stock at any time. We supply S275JR in thicknesses from 6mm-550mm.
S275JR Steel Other Classifications:
| Country/Region | Steel Grade |
| DE | St44-2 |
| FR | E28-2 |
| UK | 43A |
| EU | S275JR (formerly Fe430B) |
| SWE | 1412-00 |
| NOR | NS12142 |
