Steel 45 rounds from Ø30 to Ø330 mm – not just metal, but the reliable foundation for someone’s future project, machine, or bold idea.
Who We Are
Ukrpostachservis is a family-run metal supply company that has been proudly serving Ukrainian manufacturers, repair shops, and private craftsmen for over 15 years. We started small – a father, two sons, and a warehouse in Dnipro – and we deliberately kept that spirit even as the company grew.
We do not chase endless volume or become another faceless trading giant. Instead, we personally select every batch that enters our warehouse. We open the mill certificates, send samples to the laboratory when something raises an eyebrow, measure Rockwell hardness ourselves, and only then put the material on the shelf with our own stamp of approval.
For us, Steel 45 is not just GOST 1050-2013 on paper – it is a promise that the shaft you turn tomorrow will not crack in six months, that the gear you cut will survive the season, and that the bolt you make will hold when everything depends on it. Regular customers keep coming back for exactly this: honesty in every millimetre of diameter, every percent of carbon, and every agreed delivery day.
What We Offer
We specialise exclusively in carbon structural steel grade 45 (analogue C45, C45E, 1045) circles – and we offer the widest size range you will find ready in stock in Ukraine:
- Diameters from 30 mm to 330 mm (practically every 5–10 mm in between)
- Both hot-rolled (black surface) and forged execution
- Standard lengths 4–6 metres; fixed lengths or multiples on request
- Surface condition: black, or precision peeled to h11/h9 tolerance when your drawing demands it
- Every single bar is supplied with original mill certificates + our own exit quality protocol (chemical composition, mechanical properties, ultrasonic test report when required)
More than 400 tonnes of grade 45 circles are always stored under roof on heated floors, systematically oiled and protected from rust. This means your material is clean, straight, and ready for immediate loading – no excuses about “it got wet last winter”.
When Steel 45 Circles Become the Perfect Choice
Steel 45 is the legendary “golden mean” of engineering steels. Its 0.42–0.50 % carbon content gives exactly the combination most designers look for:
- After normalisation: excellent machinability and decent toughness
- After quenching and tempering (HB 229–269, or higher on request): wear resistance and core strength sufficient for medium-loaded shafts
- Perfect weldability with preheating – invaluable for repair jobs
Typical applications our customers successfully implement every day:
- Transmission shafts and motor axles in agricultural and road-building machinery
- Gear blanks, pinions, and spline shafts before case-hardening or induction hardening
- Heavy-duty bushings, bearing seats, and flanges
- High-strength fasteners (class 8.8–10.9 bolts and studs)
- Rollers and cams in small-series equipment
- Emergency repair parts when the original broke in the field and the harvester cannot wait
And, of course, countless one-off jobs: “I need exactly one piece 87 × 3120 mm, and the customer is waiting at the gate”. We hear that sentence several times a week – and we love being able to say “yes” immediately.
Why Customers Choose Us Again and Again
- Real, deep stock – over 400 tonnes and 120+ different diameters constantly available. You will not hear “call back in a month”.
- Same-day cutting on modern band saws up to 330 mm – accurate, clean, with almost no burr.
- Honest weight and honest price – you pay exactly for the metres you receive, measured on certified scales in your presence if you wish. No “average weight” games.
- Delivery by our own trucks to every corner of Ukraine – from Chernivtsi to Kharkiv, from Odessa to Sumy – or convenient self-pickup from the warehouse in Dnipro (24/7 with prior notice).
- Flexible payment terms for legal entities (deferred payment for trusted partners) and genuinely fair prices for private workshops and individual turners.
- Personal approach – the same manager who accepted your order will personally check that the driver loaded exactly what you ordered.
Customers openly say: “When Ukrpostachservis confirms the diameter is 112 mm and the hardness is within limits, I can give the part to the machinist without even checking – it will fit on the first try.”
Technical Characteristics You Can Rely On
- Chemical composition strictly according to GOST 1050-2013 (C 0.42–0.50 %, Mn 0.50–0.80 %, Si 0.17–0.37 %, P and S ≤ 0.035 %)
- Mechanical properties after normalisation: σт ≥ 355 MPa, σв ≥ 610 MPa, δ5 ≥ 16 %, ψ ≥ 40 %
- Excellent hardenability – critical diameter up to 50–60 mm when quenched in oil
- Good ultrasonic soundness – we additionally check large forged bars ≥ 180 mm
If you need material with guaranteed impact toughness at −20 °C or restricted sulphur for better machinability – just say the word, we will select or order exactly that heat.
Start With the Right Material Today
Visit our constantly updated size and price table right now: https://ukrpostachservis.com.ua/g1029797-krugi-330
You will see real availability, current prices per metre/kg, and exact stock quantities for every diameter from 30 mm to 330 mm. Choose what you need, add to cart or simply call/write – our managers respond within minutes.
The circle you need for your project is already waiting in the warehouse, protected, measured, and documented. All that remains is one phone call or message, and tomorrow it will be on your machine.
Ukrpostachservis – when precision begins with the material itself.
