AISI 4340 Forged Round Steel Bars

Loading Port:China main port

Payment Terms:TT OR LC

Min Order Qty:30 m.t.

Supply Capability:10000 m.t./month

Product Description:

AISI 4340 Forged Round Steel Bars                 

                       

Products Details 

aisi 4340 forged steel round bars
Comparative standardGradeCSiMnCrMoVWPSNi
GB40CrNiMoA0.36-0.440.10-0.3500.45-0.701.10-1.400.20-0.35

0.030.021.30-1.7
AISI4337/4340









JISSNCM8









DIN34CrNiMo6/1.65820.34max 0.400.651.500.23

0.030.031.50
Dimensions
Round bar
Dia:10mm~700mmLength:2m~6m
Flat bar
Thickness:10mm~500mmLength:2m~12m
*Dimensions can be customized
Heat Treatment
Normalizing850-880°C-
Stress Relieving650°Cair cooling
Quenching830-860°Coil quenching
Tempering540-660°C
1.Normalizing
Normalizing temperature : 850-880°C

2.Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx.650°C,
holding for 1-2 hours at heat,followed by air cooling .
This operation is performed to reduce distortion during heat treatment .

3.Hardening
Harden from a temperature of 830-860°C followed by oil quenching.
Quenching temperature in the end quench test is 850°C.

4.Tempering
tempering temperature: 540-660°C

Detail information
ProcessEAF+LF+VD+Forging+(Rolling)+Annealing Condition (optional)
Delivery ConditionHot forged+Rough machined/turned surface
MOQ1 ton
Technical DataAccording to customer’s requirements of chemical composition, physical properties and mechanical testing
Ultrasonic TestUltrasonic test according to SEP 1921-84   G3 D/d E/d
Applications
Hot extrusion dies, forging die forging hammer, forging press die, precision forging die well as aluminum, copper and alloys die-casting mold.
Relevant documents
Contract DocumentsContract, Debit Note, PI(Performa Invoice)
Shipping DocumentsB/L(Bill of Loading), Packing List, Shipping list, CI(Commercial Invoice)
CertificationsSGS, ISO9001-2008, UT(Ultrasonic Test), CO(Certificate of Original), MTC(Milling Test Certificate)

 

Products Show 

 


Product Overviews 

Product NameTypical GradesDiameter(mm)Standard adopted
Carbon Steel20 (1020/S20C/C22)Ø16-Ø300

 

 

GB/SAE/JIS/DIN

 

40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing SteelGCr9 (51100/SUJ1)Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)

 

Cr-Mo Steel

20Cr (5120/SCr420H/20Cr4)Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel20CrNiMoØ16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)


Application 

Carbon Steel

 Mold bottom,   Plastic mold,   Construction machinery parts

 Automobile parts,   Security grills,   Screens,  Construction

 Bearing Steel  Aerospace,   Navigation,   Nuclear energy,   Chemical industry

 Electronic information,   Petrochemical,   Instrument and meter

 Transportation 

 Cr-Mo Steel  Mechanism & Fasteners gear,    Stressed components for vehicles 

 Engines and machines,    Parts of larger cross-section

 

Gear Steel

All kinds of gears,   Statically and dynamically stressed component for vehicles

Engines and machine,   Larger cross-section parts,   Crankshafts 


Work Shop 

 AISI 4340 Forged Round Steel Bars


Company Information 

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

 


FAQ

1, Your advantages?

     professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

      SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3,  Factory or Trading Company?

      CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

    30% TT as deposit and 70% before delivery.

    Irrevocable L/C at sight.

5, Trading Terms?

    EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

     CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

     For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.


Packaging & Delivery

1, Packaging: seaworthy package or as required 

2, Delivery: 35-45 days or based on quantity