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Assorted round steel bar stock

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Commercial Production · Alloy Steel · Nickel-Chromium-Molybdenum Alloy Steel Bar

4330 Round Steel Bar

A tough, high-strength nickel-chromium-molybdenum alloy used for heavily loaded and fatigue-critical parts. Request Pricing

4330 Round Bar: Material Profile

4330 combines deep hardenability with strong impact and fatigue performance, including variants used in demanding aerospace and oilfield service.

The exact suffix, quality level, melt practice, heat treatment, testing, and mechanical requirements must be stated.

Purchase to the controlling ASTM, SAE, AMS, or customer specification. Section size, supply condition, mechanical properties, surface limits, testing, and heat/lot traceability can change the acceptable material and processing route.

Product form Round bar; other long-product forms by inquiry
Condition Hot rolled, cold finished, annealed, or heat treated as required
Quote details Specification, size, condition, quantity, testing, and delivery

Key Characteristics

  • High toughness
  • Deep hardenability
  • Good fatigue strength
  • Strong impact resistance

Common Applications

  • Landing-gear and aerospace parts
  • Oilfield components
  • Heavy-duty shafts
  • Power-transmission parts

Specification Requirements

Identify the governing specification and revision, product form, section size, condition, mechanical properties, testing, and certification requirements. The purchase specification and material certification govern the order.

Request Pricing for 4330 Round Bar

We quote 4330 for manufacturers and commercial buyers. Requirements of 3,000–10,000 lb are welcome, along with multi-ton and truckload programs.

We are not a retail metal store. Small personal-use, typical single-bar, and cut-piece orders are generally not a fit. The material field is prefilled and remains editable; add the specification, size, condition, total weight, processing, testing, required date, and ship-to location.

Up to 4 files, 10 MB each and 20 MB total. PDF, images, DOC/DOCX, XLS/XLSX, CSV, TXT, DWG, DXF, STEP, or IGES. Archives, executables, SVG, and HTML are not accepted.

Fast response: We review website RFQs promptly and reply fast during business hours.

Private RFQ: Details and attachments are available only through authorized staff access. Privacy notice.

Premium Steel Sales
Ohio Bar & Metal Co. is the round bar division of Premium Steel Sales LLC.

Premium Steel Sales handles customer setup and invoicing. Flat-rolled carbon and coated steel can be quoted through the same sales contact.

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