4120 4130 4140 High Precision Alloy Steel Rods
Quenching and Tempering, abbreviated as Q&T is a king of processing that strengthen or harden steel bars by heating the materials and then cooling in water, oil or other liquid medium, that rapidly the change from austenite to perlite to get the proper properties for various usage. The quenched & tempered steel bar materials are usually with carbon from 0.30% - 0.60%, it is widely used as merchant bars in components of various machines.
Aisi 4120 4130 4140 round steel bar material quenched and tempered q&t steel bar we supply includes following advangtages:
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
Product
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Steel round bar |
12mm to 100mm |
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Steel square bar |
16*16mm to 100*100mm |
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Hexagonal steel bar |
14mm to 100mm |
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Other shapes according to the drawing |
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Delivery condition |
Hot rolled + Q&T, cold drawn + Q&T, Q&T+ Peeled, Q&T+ Peeled+ Grinding |
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Surface treatment |
Quenching and Tempering,Shot blasting, Straightening,Cold drawing, Peeling & Turning, Grinding |
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Sizes tolerance |
ISO898 for hot rolled,h9, h10, h11 for cold drawn and peeling |
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MOQ |
3 ton each diameter according to stocks |
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Delivery time |
Within one month in general |
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Payment term |
T/T, L/C, D/P etc. |
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Contact ways |
Email:jysales05@lcjypipe.com/whatsapp wechat skype:(+86)15965232297 |
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We pay much attention to the packing by using film wrapped inside,Nylon plactick den packing outside,stamped,wooden blocks in the bottom.we can also use wooden box packing according to your requirment.



Bolts:
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.
Shafts: 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.
Hydraulic components:hydraulic shafts, piston rod, flanges, gear, pin etc.
Raw materials steel bars used for CNC machines, precision CNC machines etc.
Mould: Ejector pins and Ejector rods

2.Good roundness
3.Good straightenss(0.2mm/m, 0.5mm/m, 1mm/m, 2mm/m)
4.Suitable sued mechanical properties (We can do heat treated according to final usage)
5.Good roughness to bright surface ( 0.4um, 0.6um, 0.8um)
6.More processing (Straightening, polishing, grinding)
7.Machinability is improved leading to a better tool life
8.No brittle, UT testing
9.Professional technical service
10.Competitive price
11.Fast delivery

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