Available Shapes
S275JR Steel
S275 steel is a general-purpose structural steel that is used widely in the construction industry due to its strength and workability properties. S275 is low carbon steel most commonly supplied as plate, round, or flat bar.
Steel classification is regulated within Europe by the European Committee for Iron and Steel Standardisation, S275 steel complies with EN 10025 standard in Europe but may be referred to as A570Gr40 in the United States. Within Europe, all metals must meet specific criteria for their classification which includes rigorous regulation regarding strength and chemical composition.
For classification purposes within Europe, ‘S’ refers to the fact that this is structural steel. ‘275’ is a reference to the yield strength. Yield strength must meet the minimum requirement of 275 N/mm2. Testing for strength is carried out on sample material that is up to 16 mm thick.
Related Specifications
BS EN 10025, BS4360 43A
Applications
Analysis
Steel Profiles
Grinding
Typical Mechanical Properties*
Heat treatment
Applications
Steel is used the world over in substructures and superstructures within construction, S275 is used in construction to produce rolled steel joists because of its strength and mechanical properties. As low carbon steel, S275 is easily machinable and has good welding properties which makes it a popular choice across oil, gas, automotive, and aeronautical industries to construct frames, joist supports, brackets, vehicle and chassis parts, and general maintenance applications.
Analysis
| Carbon | 0.25% max | Phosphorous | 0.04% max |
| Manganese | 1.60% max | Sulphur | 0.05% max |
| Silicon | 0.50% max |
Steel Profiles
S275 steel profiles are available as multiple or one off pieces. Flame cut steel blanks can be supplied surface ground and edge machined to your requirements.
Grinding
Surface grinding and edge grinding is available on all flame cut steel components.
Typical Mechanical Properties*
As a hot rolled non alloy steel the main characterisitics of S275 are its mechanical properties, such as the tensile strength and yield strength.
| Tensile Strength N/mm² (MPa) | Yield Strength N/mm² (MPa) |
|---|---|
| 380-540 | 275 |
(*as rolled – 16mm plate)
Heat treatment
S275 is not ideally suited to hardening, though it can be subjected to limited heat treatment process such as case hardening.
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