tg&p steel bar

4140 Bright Finished Steel Bar

 Our factory has complete equipment. Through technical means such as quenching and tempering, normalizing and annealing, the steel has good metallographic structure, uniform hardness, stable quality, high dimensional accuracy, smooth surface and no defects, which can greatly improve machining efficiency and reduce materials. loss. It can be applied to various vehicle drive shafts, intermediate shafts and other high-precision security rods.

4140 peeled or turned teel bar peeling or turning is a kind of machining used to remove the imperfections on the hot rolled bars surface. It can also get more precision diameter tolerance and bright surface after peeling or turning. If grinding or polishing is added, the steel bars will be have very good surface roughness which can be directly used to produce components. 4140 turned, ground and polished precision shafting is produce by 4140 cold drawn or hot roll steel bar to get precision dimension and better straightness in the production of shafts. The straightness is quite important to shafting CNC machining. 4140 turned ground and polished steel bar is used to produce crankshafts, high-speed motor shafts, axle shafts, pup shafts, etc.

4140 turned ground and polished steel bar we supply includes following advantages:

Consistent mechanical properties

Deep mechanical properties (from surface to the center according to your requirement)

Even hardness on the whole bars/Tougher and Increased strength

No brittle, UT testing/Precision size tolerance/Good straightness

Good Roughness/Professional technical service/Competitive price/Fast delivery

1. 4140 steel equivalent material:

2. 4140 steel chemical composition:

 3. 4140 steel mechanical properties:

4. 4140 steel applications:

high strength stud bolt, threaded rods, wind power bolt, prestressed anchor bolts, post stressed anchor bolt, steel tie rod, tie bar, tension rod, tension bar etc. Shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive shaft, mandrel shaft, transmission shaft, screw rod etc. CNC machines, precision CNC machines etc. Ejector pins and Ejector rods

We also have other materials：A36,1020,1045,S355JR,GR55,5120,5140,4120,4130,4135,4140,4145,4150,8620,52100,S20C,S45C,SCM440,C45,42CrMo4,42CrMoS4 etc. Welcome to consult us.

5. Our packages:

In order to ensure that the surface of the product is smooth and defect-free, it is first packaged with plastic film to prevent corrosion during shipping, and then packaged with non-woven fabric or thick woven bag, or if the surface quality of the product is more stringent, we can use wooden boxes for transportation.

6. Our Factory And Inspection:

Shandong Leren Special Steel Co., Ltd. was established in 2009, specializing in domestic and international steel trade and technical services. Construction of cold drawing, annealing, normalizing, quenching and tempering production lines and finishing lines such as peeling, fine grinding and chamfering, with an annual output of about 40,000 tons. Our main products: cold drawn bars, cold drawn profiles, GR8.8 GR10.9 grade metric tooth bars, American tooth bars, peeled silver bright steel, high-strength steel tie rods, wind power prestressed anchors and high-strength anchors.