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4140 pre heat treated steel bar
4140 pre heat treated steel bar
4140 pre heat treated steel bar

4140 pre heat treated steel bar

$800-1100 /Metric Ton

Payment Type:D/A
Incoterm:FOB,CFR,CIF,EXW,FCA,CPT,DDP,DDU,Express Delivery
Min. Order:5 Metric Ton
Transportation:Ocean,Land,Air,Express,Express
Port:Qingdao,Shanghai,Tianjin
Sample:
$100.00 /Metric Ton, 1 Metric Ton (Max. Order) Buy Sample
Product Attributes

Model No.4140

BrandLE REN

StandardAisi, Astm, Bs, Din, Gb, Jis

Place Of OriginChina

Production ProcessCold Drawn

ApplicationStructural Steel Bar, Die Steel Bar, Tool Steel Bar

Whether AlloyIs Alloy

Special SteelCold Heading Steel

SpeciesAlloy Steel Bar, Carbon Steel Bar

Tolerance±1%

Processing ServiceCutting

Packaging & Delivery
Selling Units : Metric Ton
Single package size : 5cm*5cm*20cm
Single gross weight : 3kg
Package Type : Carton + Wooden Box
peeled, ground & polished steel bar.mp4
Product Description

4140 pre heat treated steel bar 


4140 pre heat treated steel bar is 4140 steel bar after quenching and tempering before using, it can also be called as 4140 hardened steel bar or 4140 quenched & tempered steel bars, 4140 qt steel bar and 4140 ht steel bar. 4140 pre hardened steel bar has high hardness and good mechanical properties. We can produce 4140 pre heat treated steel bar with difference hardness mechanical properties according to customers different technical requirements. We can supply various 4140 pre heat treated steel bar such as 4140 tg&p steel bar, 4140 peeled & polished steel bar, 4140 cold drawn and QT steel bar etc.

Img 20201113 152119

4140 steel specicification:

1. 4140 equivalent steel material: 42CrMo, 42CrMo4, 4140, scm440, 42cd, as 4140

2. 4140 steel chemical composition: C: 0.38-0.48, Si: 0.15-0.35, Mn: 0.75-1.00, S/P: 0.035 max, Cr: 0.90-1.20, Mo: 0.15-0.25

3. 4140 steel grade: astm a193 grade B7, ISO grade 8.8, 10.9, 12.9, astm f1554 grade 105

4. 4140 steel common mechanical properties:

Tensile Strength: 860MPa min

Yield Strength: 720MPa min

Elongation: 16% min

Reduction of Area: 52% min

Hardness: 35HRC max

5. 4140 steel bar shapes:

4140 round steel bar, 4140 Square Steel Bar, 4140 Flat Steel Bar, 4140 Hexagonal Steel Bar


6. 4140 technical parameters: 

A.4140 steel bar diameters: 10mm to 100mm

B. 4140 steel bar diameter tolerance: 0.025 mm min

C. 4140 steel bar length: 100mm min per piece

D. 4140 steel bar length tolerance: +/-1mm

E. 4140 steel bar surface roughness: 0.4um min

F. 4140 steel bar straightness: 0.5mm/m min

G. 4140 steel bar ovality: 75% of diameter tolerance

7. 4140 steel bar 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

Company Overview

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.

Company Photos
Production Certification
Inspection

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.


Packing & Delivery

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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