AISI 4140 MODIFIED Quenched & Tempered Bar
AISI 4140 MODIFIED Quenched & Tempered Bar introduction
AISI 4140 is a 1% chromium – molybdenum medium hardened general purpose high tensile steel – generally supplied hardened and tempered in the tensile range of 850 – 1000 MPa.
Equivalent material: EN 1.7225, UNS G41400, ASTM 4140
AISI 4140 MODIFIED Quenched & Tempered Bar general
| Property |
Value |
| Diameter |
Diameter of 25.4 - 508 mm |
AISI 4140 MODIFIED Quenched & Tempered Bar chemical
| Property |
Value |
| Carbon |
Carbon of 0.38 - 0.43 % |
| Chromium |
Chromium of 0.9 - 1.2 % |
| Iron |
Balance |
| Manganese |
Manganese of 0.75 - 1 % |
| Molybdenum |
Molybdenum of 0.15 - 0.35 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.15 - 0.35 % |
| Sulfur |
Sulfur of 0.025 % |
AISI 4140 MODIFIED Quenched & Tempered Bar mechanical
| Property |
Temperature |
Value |
| Charpy impact energy, V-notch |
-46.0 °C |
Charpy impact energy, V-notch of 27 J |
| Elongation |
23.0 °C |
Elongation of 20 % |
| Hardness, Brinell |
23.0 °C |
Hardness, Brinell of 217 - 235 [-] |
| Tensile strength |
23.0 °C |
Tensile strength of 690 MPa |
| Yield strength Rp0.2 |
23.0 °C |
Yield strength Rp0.2 of 551 - 665 MPa |
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