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HomeAlloy & Carbon Steels AISI 4140 Alloy Steel
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AISI 4140 Alloy Steel

AISI 4140 steel stockholders and suppliers, delivering to the whole of the middle east. AISI 4140 is a chromium molybdenum alloy steel specification widely used in the oil and gas industry. Similar to grade AISI 4130 but with a slightly higher carbon content. The higher carbon content of AISI 4140 gives greater strength and heat treatment capabilities in comparison to AISI 4130, however it does have inferior weldability characteristics. AISI 4140 machines well in the supply condition of 18-22HRc.

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Description

Specifications

Chemical Composition

Carbon : 0.38-0.43%
Manganese : 0.75-1.00%
Silicon : 0.15-0.35%
Nickel : 0.25% max
Chromium : 0.80-1.10%
Molybdenum : 0.15-0.25%
Phosphorous : 0.035% max
Sulphur : 0.040% max

Mechanical Properties

Tensile
KSI
0.2% Proof
Stress KSI
Elongation
%
Reduction
of Area %
Hardness
HRc
Hardness
Brinell
Min 100 80 20 40 18 217
Max 130 110 – – 22 235

(*at room temperature heat treated to 18-22HRc)

Certifications & QA

AISI 4140 alloy steel is available with a cast and analysis certificate or a BS EN 10204 3.1 mill certificate, please request when placing any orders.

Form of Supply

Supreme Steel are AISI 4140 steel stockholders and suppliers of round bar. Diameters can be supplied as full bar lengths or cut blanks. AISI 4140 ground steel bar can be supplied, providing a quality alloy steel precision ground bar to tight tolerances.

Diameters availability are up to 12⌀ – 650⌀.

Sheets availability are up to 12mm – 405mm.

Contact our experienced sales team who will assist you with your AISI 4140 alloy steel enquiry.

Applications

AISI 4140 is commonly used for a variety of applications in the oil and gas sector. Typical applications include components such as connection rods, collets, conveyor pins, gears, stem assemblies, pump shafts and tool holders.

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