AISI/SAE 4130 Round Bars

Source AISI/SAE 4130 Round Bars from verified mills, manufacturers and stockists on MetalMitra. Options span round, square and hex, and every order can ship with an EN 10204 3.1 certificate.

This range covers round, square, hex and flat sections in bright, black, peeled or forged condition, ready for machine shops and component makers.

AISI 4130 is a chromium-molybdenum steel with a good strength-to-weight ratio, toughness and weldability. Controlled additions of chromium, molybdenum, nickel or vanadium give alloy steel higher strength, deeper hardenability, better toughness and stronger performance at elevated temperature.

What you can source

• Round Bars — Bright, black, peeled or centreless-ground rounds.
• Hex & Square Bars — Hex and square sections for turned and machined parts.
• Flat Bars — Flats for fabrication and general engineering.
• Forged & Hollow Bars — Forged bars, rings and hollow bars made to order.

Key properties

• High-Temperature Strength — Chrome-moly chemistry keeps its strength when temperatures climb.
• Creep Resistance — Proven in long-term, high-temperature pressure service.
• Hardenability — Heat-treats well to dial in strength and toughness.
• Durability — Performs reliably under heavy mechanical loads.

Applications & industries

• Power Plants
• Boilers
• Refineries
• Petrochemical
• Oil & Gas
• Heat Exchangers
• Automotive
• Engineering Components
• Pressure Vessels
• Heavy Machinery
• Fabrication
• General Engineering

Testing & documentation

Inspection and documentation for AISI/SAE 4130 Round Bars follow the applicable standard plus any extra requirements in your PO.

• Diameter & straightness inspection
• Visual and surface inspection
• Grade verification against the order
• Chemical composition verification
• Mechanical property testing
• Hardness testing as applicable
• Ultrasonic testing as applicable
• EN 10204 3.1 Mill Test Certificate

Material properties

Chemical composition and mechanical properties are supplied to the limits of the governing material standard. Actual heat values are reported on the mill test certificate shared with each consignment.

Why source on MetalMitra

• Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
• One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
• Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
• Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.

Request pricing

Post an RFQ for AISI/SAE 4130 Round Bars with your drawing or specification and receive quotes from verified suppliers.

Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.