SNCM439 / SNCM8 Forged Steel Shaft Bright Surface AISI 4340 Steel 36CrNiMo4 Wellhead DSA Double Studded Adapter
4340 steel round bar is known for its exceptional strength, making it the go-to choice for high-stress applications. It is a type of alloy steel that contains various elements such as chromium, manganese, molybdenum, nickel, silicon, and vanadium, which contribute to its high strength and toughness.
Due to its outstanding mechanical properties and resistance to fatigue, This round bar is popular in the aerospace, oil and gas, and automotive industries, where high-stress applications are prevalent. It is also useful in the manufacturing of shafts, gears, and other high-strength components.
When it comes to choosing a material for high-stress applications, It is a reliable option due to its excellent strength and durability. O’Hare Precision Metals offers a wide range of 4340 steel bar stocks in various sizes and shapes to meet the needs of any application. Contact our experts for a quote today.
Steel Grade Comparison
| ASTM |
AS |
DIN |
BS |
JIS |
GB |
| 4340 |
4340 |
1.6565 / 40CrNiMo6 |
EN24 / 817M40 |
SNCM439 / / SNCM8 |
40CrNiMo |
Chemical Composition (%):
| C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
| 0.37-0.44 |
0.55-0.90 |
0.10-0.35 |
0.040 max |
0.040 max |
0.65-0.95 |
1.55-2.00 |
0.20-0.35 |
Delivery dondition:
HF: Hot Finished, CW; Cold Worked, SR: Stress Relieved or Finish Anneal, A: Annealed,:
N: Normalized, Q+T: Quenched and tempered
Tube ends:
The tubes come with square cut and deburred ends.
Certification:
The product is supplied with 3.1.B inspection certificate, according to the standards EN 10204 and ISO 10474.
Identification and Marking:
The tubes are marked in indelible ink, the details being repeated along the entire length of each tube and on a label, as follows:
Manufacturer's trademark - manufacturing standard - dimensions -steel grade - supply condition - cast no. - item number.
Packaging:
The tubes come in strapped bundles. The minimum weight of each bundle is 2000kg; the maximum bundle weight being 5000kg, with a minimum of 4 pieces
Machinability of 4340 Alloy Steel
4340 alloy steel has good machinability in the annealed condition. It can be easily machined using conventional methods. However, the machinability of this alloy decreases when it is heat-treated to high hardness. It is important to choose the appropriate cutting tools and machining parameters for best results.
The use of coolant is also recommended to prevent overheating and to extend the tool life. With the right machining techniques, 4340 alloy steel can be machined to precision, making it a popular choice in the aerospace and automotive industries.
4340 Steel Round Bar Applications
High-quality 4340 alloy steel bar is an iron-chromium-vanadium alloy that contains elements such as manganese, molybdenum, nickel, silicon, and vanadium. It has excellent corrosion resistance properties, making it suitable for use in various high-stress applications such as aircraft parts, crankshafts, gears, and shafts for the oil and gas industry.
The 4340 steel round bar is known for its high strength, toughness, and low weight, which makes it an excellent choice for structural components in the construction industry. It has low heat treatment requirements, making it cost-effective and easy to produce in large quantities.
1. Basic Information:
1.1.Forged SHAFT,forged RING;forged BLOCK;forged FLANGE.
Pipe sheet,gear ring,slewing bearing ring...most of forging parts.
Forged steel flanges/carbon steel flanges/stainless steel flanges.
1.2. Material: 4130, 4140, 4317, 4142, 4340, UNS440, 34CrNi3Mo,25Cr2Ni4MOV, 18CrNiMo5, 30CrMo, 9Cr2Mo, 9Cr2W, 9Cr3Mo, 60CrMoV etc.
1.3. Dual certified to ASME/ASTM SA/A182 and EN10222-5 or DIN17440
1.4. PED-AD 2000-Merkblatt W0
1.What's your advantage?
A: Honest business with competitive price and professional service on export process.
2. How I believe you?
A : We consider honest as the life of our company, we can tell you the contact information of our some other clients
for you to check our credit. Besides, there is trade assurance from Alibaba, your order and money will be well guaranteed.
3.Can you give warranty of your products?
A: Yes, we extend a 100% satisfaction guarantee on all items.
Please feel free to feedback immediately if you are not pleased with our quality or service.
4.Where are you? Can I visit you?
A: Sure,welcome to you visit our factory at any time.
5.How about the delivery time?
A: Within 7-15 days after we confirm you requirement.
6.what kind of payment does your company support?
A: T/T, 100% L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me.
7.Can you provide samples?
A: We provide samples free of charge, but the freight should be paid you the buyer.
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