Commercial Production · Specification · ASTM A193 Alloy Steel Bolting Grade

B7 Round Steel Bar

A chromium-molybdenum alloy bolting grade used for high-temperature and high-pressure service.

Purchase to your specification

B7 for production and repeat supply.

Buying B7 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 B7 material profile ↓

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Your B7 requirement

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

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B7 Round Bar: Material Profile

Grade B7 is commonly supplied under ASTM A193 with heat treatment and mechanical requirements established by the standard.

Diameter, thread condition, length, testing, marking, and certification requirements should be included with the inquiry.

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

High tensile strength
Heat-treated alloy steel
Good elevated-temperature capability
Established bolting specification

Common Applications

Stud bolts
Pressure-vessel bolting
Flange connections
Petrochemical and power-generation equipment

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.