Specifications
Chemical Composition
| 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 |
Mechanical Properties
| 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 |
(*at room temperature heat treated to 18-22HRc)
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.
