CEAX Precision Ground Bar
When your project demands tighter tolerances, superior surface finish, and exceptional straightness, CEAX Precision Ground Bar delivers on every level. Developed and supplied by Midland Special Steels, CEAX represents the highest standards in precision-engineered, centreless ground steel.
Manufactured from our carefully selected and well-established steel grades, CEAX is produced to meet the rigorous requirements of industries where dimensional accuracy and consistency are critical. Whether you are producing high-speed rotating components, load-bearing parts, or assemblies that demand near-perfect alignment, CEAX is the bar stock that ensures a reliable foundation.
Precision ground bars are used where traditional drawn or turned materials cannot meet performance or tolerance expectations. CEAX is designed for exactly these situations — when your need for accuracy exceeds average industry standards. With improved roundness, minimal surface defects, and consistently tight diameter tolerances, CEAX ensures your components meet high-performance demands from the outset.
What makes CEAX Precision Ground Bar stand apart isn’t just the material — it’s also the infrastructure and expertise behind it. At Midland Special Steels, we’ve invested years into refining our centreless grinding capabilities and supply chain to offer precision bars at scale, with consistent results. We combine advanced processing methods with experienced technical staff to ensure every bar meets exacting specifications, both mechanically and dimensionally.
Chemical Analysis (average values)
| C% | Si% | Mn% | S% | V% | C.E%(*) |
|---|---|---|---|---|---|
| 0.18 | 0.35 | 1.55 | 0.025 | 0.11 | 0.55 max |
Mechanical Properties
| Size mm | Yield Stress Reh N/mm² min | Ultimate Tensile stress Rm N/mm² | Elongation A5 % min | Hardness HB | Toughness, KV, Joule, min, Base steel |
|---|---|---|---|---|---|
| < 20 | 520 | 650 - 800 | 12 | 200 - 240 | No guarantee |
| 20 - 90 | 520 | 650 - 800 | 19 | 200 - 240 | 27 at -20˚ C |
| > 90 – 125 | 440 | 550 – 700 | 19 | 180 – 230 | 27 at -20˚ C |
| > 125 | 400 | 550 – 700 | 19 | 180 – 230 | 27 at -20˚ C |
SIZE RANGE
Centreless ground bar, CEAX is manufactured in sizes between 20 mm and 150 mm diameter.
STRAIGHTNESS
For diameters ˂30 mm, the maximum deviation is 0.1 mm/0.5m.
The maximum deviation for larger diameters is 0.1 mm/1.0m.
ROUNDNESS
The out of roundness is maximised at 50% of the diameter tolerance interval.
IT PAYS TO BUY GROUND BAR
When you order CEAX, you’re not just buying material — you’re investing in a product that has been developed, tested, and supplied with attention to detail at every stage. You benefit from reduced machining time, improved product life, better surface interaction in moving assemblies, and ultimately, components that function more efficiently and reliably.
CEAX bars also offer excellent machinability and weldability, and when supplied in high tensile grades, they offer both strength and ductility. That makes them an ideal choice for applications in demanding sectors such as automotive, aerospace, precision engineering, toolmaking, and manufacturing. Whether you’re producing shafts, dowels, spindles, pins, or custom-machined components, CEAX ensures the dimensional control and surface quality you need.
Another key benefit of CEAX is the reliable supply. We understand that accuracy and timing go hand in hand. There’s no value in precision stock if it arrives late or inconsistently. That’s why we back our CEAX product line with a robust delivery infrastructure, flexible stockholding, and responsive service. Whether you need a single bar or regular shipments to a production schedule, we ensure the right product arrives at the right time.
In short, CEAX is the result of deep material knowledge, a precision-led approach, and a genuine commitment to quality. It’s everything you’d expect from a supplier that understands the pressure of working to fine tolerances and tight deadlines.
If your current supplier is struggling to meet your demands for precision, Midland Special Steels is ready to step in. Contact us today to learn more about CEAX Precision Ground Bar and how it can help raise the performance and reliability of your next project.
