Mahesh Bright SteelQuality Changes World
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Mahesh Bright SteelQuality Changes World
EN1A is a free cutting (free machining) steel developed specifically for high speed machining. Its raised sulphur content forms manganese sulphide inclusions that break chips cleanly, allowing faster cutting speeds, longer tool life and excellent surface finish.
It is the standard choice for components produced in volume on automatic lathes and CNC machines, where machining time dominates cost. EN1A is not intended for welding or for highly stressed parts. We manufacture EN1A bright bar at our Pune plants in round, square and hexagonal profiles.
| Element | Typical Range (%) |
|---|---|
| Carbon (C) | 0.07 – 0.15 |
| Manganese (Mn) | 0.80 – 1.20 |
| Sulphur (S) | 0.20 – 0.30 |
| Phosphorus (P) | 0.070 max |
| Silicon (Si) | 0.10 max |
Indicative ranges based on published standard specifications. Actual values vary by heat — mill test certificates are supplied with every consignment.
| Property | Typical Value |
|---|---|
| Condition | Cold drawn / bright |
| Machinability | Excellent — free cutting |
| Weldability | Not recommended (high sulphur) |
| Surface finish | Very good after machining |
| Typical use | Auto lathe turned parts, fasteners, fittings |
Properties depend on size, condition and processing route. Contact us to confirm against your specification.
Manufactured at our Chakan and Moshi plants — direct factory supply.
Uniform sulphur and manganese levels batch to batch keep your cycle times predictable.
Chemical composition certificates supplied with every consignment.
EN1A is a British Standard (BS 970) designation for a free cutting low carbon steel. The raised sulphur content makes it machine very easily, which is why it is widely used on automatic lathes.
EN1A is generally not recommended for welding. The high sulphur content that makes it machine well also makes welds prone to cracking. If you need a weldable grade, SAE 1018 or a similar low sulphur steel is more appropriate.
EN1A Pb (leaded) has lead added to further improve machinability, allowing even higher cutting speeds. Standard EN1A contains no added lead. We supply both.
Yes, EN1A can be carburised where a hard surface is needed, though the high sulphur content means it is less commonly specified for this than plain low carbon grades.
Round, square and hexagonal EN1A bright bar across a range of sizes. Send your dimension and quantity and we will confirm availability.
Send your size, quantity and condition — we will confirm availability and lead time.