heat treating 4140 steel

Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Min. Order: 3 Metric Ton
Delivery Time: 21 Days

Basic Info


Model No.: 4140

Type: Alloy Steel Bar

Standard: ASTM, AISI

Steel Grade: 400 Series

Technique: Cold Drawn

Application: Structural Steel Bar, Tool Steel Bar, Die 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

heat treating 4140 steel


We produce heat treating 4140 steel bars such as 4140 annealed steel bar, 4140 normalized steel bar, 4140 quenched and tempered steel bar. The 4140 heat treating steel bars we sullpy in different surface condition too, such as 4140 cold drawn steel bar, 4140 peeled steel bar, 4140 turned steel bar, 4140 centerless ground and polished steel bar, that is also called 4140 tg&p steel bar. Our steel bars specification is as below:


1. Steel material: aisi 4140, sae 4140 or astm 4140. We do supply 4140 completely as american steel standard, not similar materials.


2. Steel bar diameters: We can produce 4140 steel bars diameters from 12mm to 100mm, the tolerance is within +0/-0.02mm


3. Steel bar length: We have dis saw cutting machines which can cut the bars as you required, the tolerance is within +/-1mm


4. Steel bar surface: We produce 4140 tg&p steel bright bars, the surface roughness can be controled below 0.4RA after polishing.


5. Steel bar straightness: We have fine straightening machines to guarantee the bars length can be within 0.5mm/m.


6. Steel bars quality guarantee: 


1) After the raw mateirals coming into our factory, we will do complete inspection on the hot rolled steel bars, for example:


A. Chemical composition : We have German imported spetrometer to test the chemical composition.

C

SI

MN

S

P

CR

MO

0.38-0.45

0.15-0.35

0.75-1.00

0.035 MAX

0.035 MAX

0.80-1.20

0.15-0.25


B. Microstructure testing: We will test the goods non-metallic inclusion,  grain size, segregation, porosity etc. 


C. Ultrasonic Testing:  Test the bars to guarantee the bars no cracks


2) During the goods in production, we do frequent inspection on the diameters and surfaces and check the production machine running datas in normal situation and take the samples for test.


3) After the goods finished, we will do surface quality test and the mechanical properties test, for example:

A. Eddy Current Inspection

B. Magnetic Particle Inspection

C. Strength Test: 

Yield Strength

Tensile Strength

Reduction of Area

Elongation

720MPa min

860MPa min

52% min

16% min


D. Hardnes Test: 35HRC max


E: Impact AKV test: We can do the impsct test in the centegaree such as 20, 0, -20, -70, -101.


The mechanical properties can be got by heat treatment according to your requirements.

Bright Steel Bar> Ground And Polished Steel Bar> scm440 ground and polished steel bar
Bright Steel Bar> Ground And Polished Steel Bar> 42CrMoS4 ground and polished steel bar
Bright Steel Bar> Ground And Polished Steel Bar> 42CrMo4 ground polished steel round bar
Bright Steel Bar> Ground And Polished Steel Bar> 4140 ground and polished steel bar
Bright Steel Bar> Ground And Polished Steel Bar> 1045 ground and polished steel bar
Cold Drawn Steel Bar> Cold Drawn Hexagonal Steel Bar> 1045 cold drawn hexagonal steel bar
Cold Drawn Steel Bar> Cold Drawn Hexagonal Steel Bar> 1020 cold drawn hexagonal steel bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> grade quenched and tempered qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> astm a193 grade b7 qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 40Cr quenched and tempered qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 41Cr4 quenched and tempered qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 5140 quenched and tempered qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 42CrMoS4 quenched & tempered qt steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> SCM440 Q&T alloy steel round bar
Heat Treated Steel Bar And Tube> Quenched And Tempered Steel Bar> 42CrMo4 1.7225 Q&T steel round bar
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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