4140 precision ground shaft

Unit Price: USD 600.0000 / Metric Ton
Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Min. Order: 5 Metric Ton
Delivery Time: 15 Days

Basic Info


Model No.: 4140

Type: Alloy Steel Bar

Standard: ASTM, AISI

Technique: Hot Rolled

Application: Structural Steel Bar

Surface Treatment: Polished

Alloy: Alloy

Special Use: Mold Steel


Additional Info


Packaging: Anti-rusty packages

Productivity: 3000 per month

Brand: LE REN

Transportation: Ocean,Land,Air

Place of Origin: LAIWU, CHINA

Supply Ability: 3000 per month

Certificate: ISO9001

HS Code: 72283090

Port: Qingdao


Product Description

4140 ground and polished precision steel round bar for precision ground shafting


4140 precision bright steel round bar is turned or peeled, cneterless ground and polishedsteel bar. 4140 ground and polished steel bar is usually quenched and tempered to get higher mechanical properties and hardness. 4140 qt steel round bar is 4140 steel bar after quenching and tempering with oli quenching media 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 oqt steel bar has high hardness and good mechanical properties. We can produce 4140 ht steel rod with difference hardness mechanical properties according to customers different technical requirements. We can supply various 4140 oqt steel round bar such as 4140 tg&p steel bar, 4140 peeled & polished steel bar, 4140 cold drawn and QT steel bar etc.


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

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Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 4140 quenched & tempered qt steel round bar


Contact Info

CONTACT US

SHANDONG LE REN SPECIAL STEEL CO., LTD.

Address: NO. 89, QINGSHUI COMMERCIAL STREET, LAIWU DISTRICT,Jinan,Shandong

Contact Person: Angelina Chen

Phone:86-0634-5648998

Fax:86-0634-5648997

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