4340 ground and polished bright steel bar

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: 30 Days

Basic Info


Model No.: 4340

Type: Alloy Steel Bar

Standard: AISI, ASTM

Steel Grade: Other

Technique: Cold Drawn

Application: Structural Steel Bar

Surface Treatment: Polished

Alloy: Alloy

Special Use: Mold Steel

STEEL GRADE: 4340


Additional Info


Packaging: Anti-rusty standard seaworthy

Productivity: 3000 tons per month

Brand: LE REN

Transportation: Ocean,Land,Air

Place of Origin: Shandong Provnce, China

Supply Ability: 3000 tons per month

Certificate: ISO 9001

HS Code: 7228309000

Port: Qingdao Port


Product Description

4340 ground and polished bright steel bar

 

aisi 4340, sae 4340, astm 4340 steel is same steel grade material in different American Industry Standard. It is one kind of nickel chromium molybdenum alloy steel grade material knows for it's toughness and ability to attach high strength and hardness after heat treatment.  4340 turned, ground and polished precision shafting is produced by 4340 cold drawn or hot roll steel bar to get precision dimension and better straightness in the production of shafts. The straightness is quite important to shafting CNC machining. 1045 TG&P is used to produce crankshafts, high-speed motor shafts, axle shafts, pup shafts, etc.


Our company Shandong Le Ren Special Steel Co., Ltd. is a factory to produce cold drawn steel bars, peeled steel bars, centerless ground and polished bright steel bars, heat treated steel bars such as annealed steel bar, normalized steel bar, quenched and tempered steel bar, threaded rods, high strength tie rods and anchor bolts etc. Except above special steel bar, we can also supply other steel bar processing service such as cutting in pieces, drilling holes, thread rolling, chamfering, straightening, shot blasting etc. Our full set of production facilities and complete testing equipments help us to supply steel solutions to our customers to decrease their production whole cost and increase their commercial value.


For 4340 steel grade materials, we can supply you aisi4340, sae 4340, astm 4340 hot rolled steel round bar, aisi 4340, sae 4340, astm 4340 cold drawn steel round bar, aisi 4340, sae 4340, astm 4340 peeled steel round bar, aisi 4340, sae 4340, astm 4340 centerless ground and polished steel bar, sae 4340, aisi 4340, astm 4340 annealed, normalized, quenched and tempered steel round bar. 


4340 ground and polished steel bar we supply includes following advantages:

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

 

Specification of 4340 ground and polished steel bar we supply:

1. 4340 steel equivalent material:

GB

JIS

ASTM/AISI/SAE

40CrNiMo(A)

SNCM439

4340

5. 4340 steel Chemical composition:

 

C

SI

MN

S

P

Cr

Mo

Ni

40CrNiMo(A)

0.37-0.44

0.17-0.37

0.50-0.80

0.035 (max)

0.035 (max)

0.60-0.90

0.15-0.25

1.25-1.65

SNCM439

0.36-0.43

0.15-0.35

0.60-0.90

0.030 (max)

0.030 (max)

0.60-1.00

0.15-0.35

1.65-2.00

aisi 4340

0.38-0.43

0.15-0.35

0.60-0.80

0.035 (max)

0.035 (max)

0.70-0.90

0.20-0.30

1.65-2.00

6. 4340 steel Mechanical Properties:

Yield Strength(MPa)

Tensile Strength(MPa)

Elongation(%)

AKV

835(min)

985(min)

12(min)

55(min)

Note: The mechanical properties can be adjusted according to heat treatment based on your requirement.

4. 4340 steel applications:

aisi4340 steel can be used to produce commercial and aircraft, automobile systems, forged hydraulic and other machine tools like forged steel crankshafts


5. Our products inspection:

Inspection

6. Our products Packages:

Packages

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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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