AISI 4340 Steel Round Bar Product Spec
1.Product Details
· GB steel number: CN:40CrNiMoA DIN:36CrNiMo4 JIS:SNCM439 BS:816M40 US:AISI/ASTM4340
· keyword:4340 steel spec,4340 steel bar
· Usage: It is used as important quenched and tempered parts that require good toughness,high strength and large size,
such as heavy machinery and high-load shafts,turbine shafts with a diameter greater than 250mm, helicopter rotor shafts,
turbojet engine turbine shafts,blades, high Loaded transmission parts, crankshaft fasteners. gears, etc.;
· Other Steel Types:5140 /4140 / 4340 / 4142 / 15CrMo / 6150 / 38CrMoAI / 8620 .....
· Serve:OEM/ODM
· Delivery status:With heat treatment (normalized, annealed or high temperature tempered) or without heat treatment Goods, the delivery status should be specified in the contract
1.1 Chemical composition
1.2 Equivalent Steel Grade
1.3 Mechanical Properties
1.4 Surface Treatment
Plate: Origin Black, Orign cold rolled bright, Machined, Grinded
Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded
1.5 Charateristics
4340 steel offers toughness and high strength inthe heat treated condition,
with in round bar 4340 is available fully certified and suitable for applications
requiring a quality tensile alloy steel.AISI 4340 is commonly supplied quenched
and tempered with a hardness of between 24 to 29HRc
1.6 Applications
This grade of steel is suited for shock loading or stress concentration applications such
asshafts, gears,bolts,nuts,pins and couplings.
1.7 Product Photo
2.Company Introduction
Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of over 20000 tons. In those years, we offer a wide range of steels to our customers from all over the world. And we enjoy high praise among them.
3.Customer Photos
We warmly welcome new and old customers to establish good and long term relationship with us based on equality and mutual assistance.
4.Certifications
5.Product packaging
6.FAQ
Q:Are you a factory or a trading company?
A: The fact is that we are a company. We have own factory and several warehouses. Under the trend of globalization of the world, we established a professional foreign trade department to change the world.
Q: What is your delivery date?
A: The delivery date is about 10-30 days after receipt of payment.
Q: Can I get some samples?
A: We are honored to offer you samples.
Q: What port do you usually ship from?
A: We have 3 common ports,Tianjin, Shanghai and Shen.
Q: What is the payment terms?
A: T/T is our priority, L/C is also OK for us.
7.Contact us
Feel free to contact us,we are glad to serve for you.
Songshun Always Open the Door for You.
MiKi Zhuo
Skype/Whatsapp/Wechat:86-13723516041
ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China
