Overview
Our precision‑grade pure iron round bars are produced with strict control over diameter tolerance, straightness, and surface finish – delivering the consistency that close‑tolerance machining demands. Available in the 6.5–40mm diameter range, each bar is cut to your exact length to eliminate scrap and reduce setup time. Whether you are turning valve stems, grinding shafts, or manufacturing precision fasteners, these bars provide the reliable material response and dimensional accuracy your process requires.
Key Features
Tight diameter tolerances – held to ±0.05mm (or tighter on request) for reliable chucking and consistent machining allowances
Cut‑to‑length precision – length tolerance ±0.5mm, no need for secondary sawing
High purity – ≥99.5% Fe, low carbon (≤0.02%) for predictable tool life and surface quality
Surface options – as‑rolled (with scale) or peeled (bright, scale‑free) for immediate machining
Straightness – guaranteed within 0.5mm per metre, minimising vibration during turning
Quick Specs
| Parameter | Value / Range |
|---|---|
| Diameter | 6.5 – 40 mm (any size in between) |
| Diameter Tolerance | Standard ±0.05 mm (tighter on request) |
| Length | Custom (specify your requirement) |
| Length Tolerance | ±0.5 mm |
| Purity (Fe) | ≥99.8% |
| Carbon (C) | ≤0.002% |
| Surface | As‑rolled or peeled (bright) |
| Straightness | ≤0.5 mm/m |
Ideal For
Precision CNC turning and milling
Hydraulic piston rods and valve components
Instrumentation and sensor housings
High‑tolerance fasteners and threaded parts
Prototype and low‑volume production runs
Frequently Asked Questions
Q: What diameter tolerance can you guarantee?
A: Standard is ±0.05mm. For applications requiring tighter control, we can hold ±0.02mm – please specify your need.
Q: What is the difference between as‑rolled and peeled surfaces?
A: As‑rolled has a dark mill scale and is suitable for heavy roughing. Peeled removes the scale completely, giving a bright, clean surface that is ready for finishing operations.
Q: Can you supply bars longer than standard stock lengths?
A: Yes – we cut to any length you specify. There is no fixed maximum; we accommodate your requirement.
Q: Is a material certificate provided?
A: Yes – every order includes a Mill Test Certificate with chemical analysis and mechanical properties.
Q: What is the minimum order quantity for custom lengths?
A: We accept small orders – from a single bar to full production quantities. Contact us with your needs.
Ready to order? Provide your diameter, length, tolerance requirements, and surface preference – we will supply precision pure iron round bars that fit your machining process perfectly.
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