Commercial Production · Carbon Steel · ASTM Carbon Steel Forging Grade

A105 Round Steel Bar

An ASTM carbon steel forging specification used for pressure-system flanges, fittings, valves, and related components.

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A105 for production and repeat supply.

Buying A105 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.

A grade name is the starting point. The governing specification, condition, dimensions, and testing define the material to be quoted.

Read the A105 material profile ↓

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A105 Round Bar: Material Profile

ASTM A105 controls forgings rather than a single generic round-bar chemistry, so the intended product form and conversion route must be reviewed.

Include size, heat treatment, mechanical testing, supplementary requirements, certification, and whether the material is intended as forging stock.

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

Pressure-service specification
Good forging response
Defined mechanical requirements
Traceable carbon-steel supply

Common Applications

Flanges and fittings
Valve bodies and bonnets
Pressure-system components
Forged industrial hardware

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.