Commercial Production · Alloy Steel · Chromium Case-Hardening Alloy Steel Bar

5115 Round Steel Bar

A low-carbon chromium alloy used for carburized parts requiring improved hardenability and wear resistance.

Purchase to your specification

5115 for production and repeat supply.

Buying 5115 for machining, forging, or component production? Send your dimensions, condition, and quantity per order. For repeat supply, include annual usage and release timing, or attach your existing RFQ.

Size & supply condition: State the diameter, length, and required condition. We confirm the available supply route against your order.
Finished to your requirement: Include production cutting, surface finish, tolerances, and any required heat treatment. Processing is reviewed with the material requirement.
Documentation & delivery: Specify mill certifications, testing, traceability, delivery date, and ship-to location so they can be included in the quote.

Keep the specified grade and condition together on the RFQ, including any downstream heat-treatment and testing requirements.

Read the 5115 material profile ↓

Quote Desk

Your 5115 requirement

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Quantity / WeightCommercial requirements from 3,000 lb through truckload quantities.

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5115 Round Bar: Material Profile

5115 is suited to small and moderate-section components that are machined before developing a hard case through carburizing.

Case depth, hardness, core properties, grain-size requirements, and heat-treatment responsibility should be supplied with 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.

Key Characteristics

Good case-hardening response
Improved wear resistance
Tough low-carbon core
Good machinability before hardening

Common Applications

Small gears and pinions
Bushings and rollers
Cam components
Case-hardened machine 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.