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Mechanical Tool Steel Round Shafting Bar EN24 4340 1.6511 Heat - Resistance

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
Gold supplier! Arranged shipment very fast, quality is super good. They are one of our best suppliers, will do more business with them in the future!

—— Ms Nguyen Thi Hong

We bought 7 containers from them in 2017, no quality problems. The boss is very nice and professional, good business parner!

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Mechanical Tool Steel Round Shafting Bar EN24 4340 1.6511 Heat - Resistance

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Large Image :  Mechanical Tool Steel Round Shafting Bar EN24 4340 1.6511 Heat - Resistance

Product Details:
Place of Origin: China
Brand Name: Changfeng
Certification: ISO/ Mill Certificate
Model Number: 4340/EN24/40CrNiMo/1.6511/SNCM439
Payment & Shipping Terms:
Minimum Order Quantity: 5T
Price: to be negotiated
Packaging Details: bulk packing/wooden packing
Delivery Time: 15-20 days
Payment Terms: T/T, L/C
Supply Ability: 1000t/Mouth
Detailed Product Description
Diameter: 20-100mm Length: 3000-6000mm
Hardness: ≤235HB Technology: Annealed
Application: To Make Van, Shaft, Bolt Of Large Dia Steamer Surface: Black Surface
High Light:

carbon tool steel


hardened tool steel

EN24/4340/1.6511 alloy tool steel bar for shaft with diameter 20-100mm


Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than 250 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft,gear, etc.
It can also be used for operating temperature over 400 ºC of rotor shaft and blade, etc. and after nitriding processing can also be used to make special performance requirements of the important parts, after low temperature tempering or can be used for ultra-high strength steel after thermal quenching.


Chemical composition(%)

C Si Mn S P Cr Mo Ni
0.37~0.44 0.15~0.35 0.5~0.8 ≤0.035 ≤0.035 0.60~0.90 0.15~0.25 1.25~1.65

Excellent hardenability, high toughness and good heat-resistance and fatigue-resistance.

Heat treatment:
Quenching 850 degrees; coolant; oil; tempering temperature of 600 degrees; coolant: water, oil;
Steel annealing or high temperature tempering supply state Brinell hardness GBW is less than or
equal to 269.


Q: Are you a manufacturer or merely a trader?
A: We are trading company act as exporting Steel Products with our own factory,
we can manufacture the products as in cutomer's requirement,wholesale and retail all kinds of domestic mould steel,the price we offered is very competitive compared with other agents.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as SGS, CE,ISO if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival. Third,the products we export are mainly from ShaGang group, WenFeng group, XingCheng group, DongTe group,DaYe and so on, the quality are certained.



Mechanical Tool Steel Round Shafting Bar EN24 4340 1.6511 Heat - Resistance 0

Mechanical Tool Steel Round Shafting Bar EN24 4340 1.6511 Heat - Resistance 1

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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