SHANDONG LE REN SPECIAL STEEL CO., LTD.
$800-1100 /Metric Ton
| Min. Order: | 5 Metric Ton |
| Selling Units | : | Metric Ton |
4140 scm440 42CrMo4 cold drawn Hexagonal Steel Bar
4140 scm440 42CrMo4 cold drawn hexagonal steel bar or Hex Steel Bar are produced by cold drawing from Hot Rolled Steel Round Bar through hexagonal mould. In general, before cold drawing, 4140 scm440 and scm 440 steel round bar will be annealed so that the steel bar is soft enough to protect both the mould and steel surface. Except cold drawn hexagonal steel bar, we can also supply 4140 scm440 42CrMo4 cold drawn and Q&T hexagonal steel bar to reach high strength for high strength usage.
4140 cold drawn 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
Specification of 4140 cold drawn steel bar we supply:
| Sizes | Wide range from 14mm to 100mm |
| Tolerances | Precision to h9, h10, h11 or even small to 0.02mm |
| Roundness | 75% of diameter tolerance |
| Straightness | Good straightness to 0.5mm/m |
| Surface roughness | Smooth to 0.8um |
| Mechanical properties | Yield strength and tensile strength can be improved |
| Machining | Suitable for machining and welding |
1. 4140 steel equivalent material:
| GB | ASTM/SAE/AISI | DIN | SCM | AS /NZS1444 |
| 42CrMo | Aisi 4140 / sae 4140 / astm 4140 | 42CrMo4 / 42CrMoS4 | SCM440 | AS 4140 |
2. 4140 steel chemical composition:
| Materail | Chemical Composition % | ||||||
| ASTM/SAE/AISI | C | Si | Mn | S | P | Cr | Mo |
| Aisi 4140 / sae 4140 / astm 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | 0.035 max | 0.035 max | 0.80-1.10 | 0.15-0.25 |
3. 4140 steel mechanical properties:
| Mechanical Properties | ||||
| Yield Strength (MPa) | Tensile Strength (MPa) | Elongation | Reduction of area | AKV (J) |
| 930 min | 1080 min | 12% min | 45% min | 63 min |
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
Shandong Le Ren Special Steel CO., Ltd. owns three factories to produce all kinds of steel rod, steel bar and finished steel products. Among three factories, one is to produce steel bars such as annealed, normalized and quenched and tempered steel bar and pipe, cold drawn, peeled, ground and polished steel bar etc; one is to produce threaded or knurled steel rod and steel bar; another one is to do steel bar, steel rods or steel pipe machining.
In the tactories, we have complete and advanced production, inspection and testing facilities such as shot blasting machines, cold drawing machines,straightening machines, annealing furnace, quenching and tempering furnaces, threading machines, cnc machines, welding machines etc, and inspections and testing facilities to inspect dimension tolernaces, corner radius, length, straightness, surface roughness, mechanical properties, AKV, UT testing, Eddy testing and MPI testing etc. All of these, including more than twenty years production and exporting experiences, we can supply you good quality products and services.
Our factory is equipped with complete inspection and testing facilities to inspect steel bar dimension tolernaces, corner radius, length, straightness, surface roughness, mechanical properties, AKV, UT testing, Eddy testing and MPI testing etc.
Most of our steel bar are cold drawn, peeled, ground and polished steel bar which require good surface and straightness. So steel bar packing is very important to keep good quality. We use several kinds of steel bar packing according to your technical requirements.
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