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.
