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Alloy Steel · Chromium-Molybdenum Alloy Steel Bar

4135 Round Steel Bar

A medium-carbon chromium-molybdenum alloy offering strength, toughness, and through-hardening capability. Request Pricing

4135 Round Bar: Material Profile

4135 falls between 4130 and 4140 in carbon level and may be selected where a particular balance of weldability, strength, and heat-treatment response is required.

The governing specification, condition, mechanical properties, and any ultrasonic or cleanliness requirements should accompany the RFQ.

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

  • Good strength and toughness
  • Responsive to heat treatment
  • Good fatigue resistance
  • Alloy hardenability

Common Applications

  • Shafts and axles
  • Forged components
  • Pressure and oilfield parts
  • High-load machinery components

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 a Quote for 4135 Round Bar

The material field is prefilled with 4135 and remains editable. Add the specification, size, condition, quantity, processing, testing, required date, and ship-to location.

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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