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Diameter 80-1200 Mm SAE4320 Forged Steel Bar Turned / Black / Bright Surface

China SHANGHAI UNITE STEEL certification
China SHANGHAI UNITE STEEL certification
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Diameter 80-1200 Mm SAE4320 Forged Steel Bar Turned / Black / Bright Surface

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Large Image :  Diameter 80-1200 Mm SAE4320 Forged Steel Bar Turned / Black / Bright Surface

Product Details:
Place of Origin: China
Brand Name: UST
Certification: ISO9001
Model Number: DIA80-1200mm
Payment & Shipping Terms:
Minimum Order Quantity: MOQ: 2-3 ton
Price: FOB USD 1000- 1500/ton
Packaging Details: Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.
Delivery Time: Within 10-45 days
Payment Terms: L/C, T/T
Supply Ability: 1500 ton/month
Detailed Product Description
Process: EAF+LF+VOD+Forged+Heat Treatment(optional) Ultrasonic Test: According To SEP 1921-84
Surface: Turned, Black, Bright Inspection: The Third Party Is Acceptable
Shape: Round Section Certificate: ISO9001:2008
High Light:

Forged Round Bar


Forged Steel Round Bars

hot forged steel price per kg SAE4320, forged steel bar, Small MOQ



AISI 4320 is used in the manufacturing of forged gears and pinions and other heavy-duty machinery components.

Chemical Composition(%)



Size Range


1. Round bar:


Surface condition Diameter Length


Black 80-1200mm Random

Turned 120-800mm Random


2. Flat Bar:


Surface condition Height Width Length


Black 50-600mm 1600mm max Random


Turned 80-600mm 1200mm max Random


Annealing: AISI 4320 might be processed through case hardening and subsequent heat treatment operations without the need for annealing. Its microstructure as forged will be suitable for such treatments, but in the case of small sections where a very fine structure may result from forging, a normalizing treatment would be recommended prior to further heat treatment.

Normalizing: AISI 4320 is normalized at a temperature of around 1700ºF (925ºC.) Air cooling follows heat treatment. It should be noted that experience alone will determine the normalizing temperature for a specific part following given forging conditions.

Hardening: AISI 4320 should be austenitized following carburizing at a temperature in the region of 1525 -1550ºF (830 – 845ºC) followed by oil quenching.

Tempering: The alloy will be tempered at a temperature that will most probably be based on past experience, according to required mechanical properties.

Machinability: The alloy is readily machinable in the forged – depending upon section size – condition or following normalizing. Finish machining following harden and temper is applicable.

Weldability: AISI 4320 is readily weldable by all normal methods. The alloy should however be welded in the as-forged or normalized conditions only, and not following harden and temper.


Dimension Tolerance Standard: DIN 7527.

Ultrasonic Test: SEP 1921 3C/c or specific FBH eq.

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

Product Description

applicationforged machine-2forged machineprocess of bar and tube

Contact Details

Contact Person: Anndy

Tel: +8615502127172

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