Introduction
EN1A (230M07) and EN1A Leaded (230M07 Pb) are popular free-cutting steels, but their small composition differences significantly impact machining behavior.
Steelmet Industries supplies both grades as:
🔹 Cold-drawn bright bars (Ø 5mm–150mm)
🔹 Precision ground stock
🔹 Cut-to-length blanks (±0.2mm tolerance)
Key Differences
| Parameter | EN1A (230M07) | EN1A Leaded (230M07 Pb) |
|---|---|---|
| Composition | 0.07–0.13% C, 0.2–0.25% S | Added 0.15–0.35% Lead (Pb) |
| Machinability | Good (80% of 1214) | Excellent (130% of 1214) |
| Tool Wear | Moderate | Reduced by 30–40% |
| Surface Finish | Ra 3.2–6.3 μm | Ra 1.6–3.2 μm |
| Cost | Lower | Slightly higher |
| Weldability | Poor (due to S) | Not recommended |
Applications
EN1A (Non-Leaded)
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General-purpose turned parts
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Bushings & fittings
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Low-stress fasteners
EN1A Leaded
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High-volume CNC components
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Watch/clock parts
-
Complex geometries requiring fine finishes
Why Choose Leaded?
✅ Benefits:
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2–3x longer tool life
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Higher machining speeds (+25%)
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Better chip breaking
⚠ Limitations:
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Not for welded/heat-treated parts
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Requires proper ventilation
Steelmet Industries offers both grades with:
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Drawn / Bright condition
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Custom cutting & bundling
Conclusion
While standard EN1A suits general machining, EN1A Leaded delivers superior productivity for high-volume precision work.
Request more information of both grades from Steelmet Industries to check their performance in your application.