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AISI 4145 Alloy Steel

AISI 4145 Alloy Steel – engineered for strength and impact resistance, perfect for heavy-duty oilfield and industrial applications.

AISI 4145 Alloy Steel

AISI 4145 steel stockholders and suppliers, delivering to the whole of the middle east. AISI 4145 is a chromium molybdenum alloy steel grade widely used in the oil and gas sectors. Similar to AISI 4140 but with a higher carbon content. 4145 is more popular in larger diameters due to its increased strength and hardenability. AISI 4145 is commonly supplied quenched and tempered with a hardness of between 30 to 36HRc.

Chemical Composition	Percentage %
Carbon	0.43-0.48%
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

Title	Tensile KSI	0.2% Proof Stress KSI	Elongation%	Reduction of Area %	Hardness HRc	Hardness Brinell
Min	140	120	14	40	30	286
Max	-	-	-	-	36	336

Certifications & QA

AISI 4145 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. AISI 4145 round bar is supplied in accordance with our ISO 9001 : 2008 registration.

Form of Supply

Supreme Steel are AISI 4145 steel stockholders of round bar. Diameters can be supplied as full bar lengths or cut blanks. AISI 4145 ground steel bar can be supplied, providing a high quality steel precision ground bar to tight tolerances. Diameters availability are up to 80⌀ – 130⌀. Contact our experienced sales team who will assist you with your AISI 4145 alloy steel enquiry.

Applications

AISI 4145 is commonly used for a variety of applications in the oil and gas sector. Used often for the manufacture of down hole drilling tools such as drill collars. Other applications include gears, shafts for hydraulic presses, rolls for paper mills, pump shafts and tool holders.