Turning 4140 T Alloy Bar Quenching Tempering Heat Treatment

4140 T alloy steel is a steel in the SAE steel family, designated by the Society of Automotive Engineers (SAE).
The alloying elements include chromium and molybdenum, so these materials are often informally referred to as chrome-molybdenum steels (common variants include chrome-molybdenum, CrMo, CRMO, CR-MOLY, etc.).
They have an excellent strength-to-weight ratio and are much stronger and harder than standard 1045 steel, but are not easy to weld (pre- and post-weld heat treatment is required to avoid cold cracking)
The "T" in 4140T refers to the fact that 4140 alloy steel has better tensile strength and yield after a quenching and tempering heat treatment process. The quenching process hardens the steel, while the tempering process restores some ductility and eliminates some of the brittleness acquired during the heat treatment process.

EDEST provides custom processing services such as turning, grinding and polishing, and produces to ASME standards with very tight diameter tolerances

Typical uses for 4140 include:

Jigs
Fixtures
Drill Collars
bolts
Stubs
Couplings
Axles
Shafting
Piston rods
Rams
Gears

AISI4140 alloy structural steel is widely used in machinery manufacturing, automobile manufacturing, shipbuilding, metallurgy, petrochemical and other fields. For example, it can be used to manufacture high-strength mechanical parts such as transmission shafts, gears, bearings, etc. In addition, it can also be used to manufacture petrochemical equipment such as oil drills and drilling platforms. In addition, AISI4140 alloy structural steel can also be used to manufacture high-strength automotive parts such as axles, transmission systems, etc.

4140T Alloy Steel Chemical Composition

Carbon: 0.38%-0.43%
Manganese: 0.75%-1.00%
Chromium: 0.80%-1.10%
Silicon: 0.15%-0.30%
Molybdenum: 0.15%-0.25%

The mechanical properties of AISI4140 alloy structural steel are excellent, with a yield strength of 930-1200MPa, a tensile strength of 1080-1350MPa, an elongation of 10-25%, and a hardness of 217-388HBW.

Product Display

Machining Center

We have our own workshop, we can supply one stop service:

1. Blasting Machine Cleaning The Steel Surface

2. Fiber Machine Cutting The Plate As The CAD Drawings

3. Bending Machine

4. Drill Machine Drill The Holes.

5. Laser & Punch

6. Laser Cutting

7. Folding

8. Insert Installation

9. Fabrication

10. Assembly