Product Introduction
Bolt Grade 10.9 is a high-strength bolt grade, typically made of carbon or alloy steel. Mechanically, it meets the 10.9 standard, indicating very high tensile and yield strength. Additionally, Bolt Grade 10.9 bolts undergo special surface treatments like zinc or nickel plating to enhance corrosion resistance and wear resistance. These features make Bolt Grade 10.9 widely used in applications requiring high strength and reliability, such as construction, bridges, automotive, and machinery.
Product Advantages
High-Strength Characteristics
Bolt Grade 10.9, representing high-strength bolts, boasts a tensile strength of up to 1090 MPa and a yield strength of 981 MPa (0.9 times the tensile strength). This exceptional strength implies that, compared to ordinary bolts, Bolt Grade 10.9 can withstand greater tensile and compressive forces, ensuring the stability and safety of connected structures.
High-Quality Material
Bolt Grade 10.9 bolts are crafted from high-quality alloy steel materials such as 40Cr and 35CrMoA. After undergoing heat treatment, these materials not only gain enhanced strength but also possess excellent wear resistance and fatigue resistance. Compared to Q235 steel commonly used in ordinary bolts, alloy steel exhibits significant advantages in hardness and toughness, making Bolt Grade 10.9 bolts more durable and long-lasting during use.
Excellent Corrosion Resistance
To further boost the durability of Bolt Grade 10.9 bolts, we employ various surface treatment methods, including galvanizing, hot-dip galvanizing, and painting. These treatments form a protective layer on the bolt's surface, effectively isolating it from oxygen and moisture in the air, thereby slowing down corrosion and extending service life. Hot-dip galvanizing, in particular, offers superior corrosion resistance, keeping the bolt in good condition even in harsh environments.
Versatile Specifications
Bolt Grade 10.9 bolts come in a variety of specifications, with diameters ranging from M6 to M30 and lengths adjustable based on actual needs. Bolts of different diameters and lengths cater to the requirements of various structures and connectors, ensuring tight and reliable connections. Additionally, we offer both coarse and fine threads. Coarse threads are suitable for applications requiring significant connecting force, while fine threads are ideal for situations needing precise adjustments.
Easy Installation
The installation process for Bolt Grade 10.9 bolts is simple and swift, utilizing pretension torque to ensure tight and reliable connections. Their half-threaded design and external hexagon head make the installation process easier to operate, saving time and labor costs.
Product Parameters
| M 5 x 6 – 80 | M20 x 30 – 200 |
| M 6 x 8 – 100 | M22 x 40 – 200 |
| M 8 x 10 – 200 | M24 x 40 – 200 |
| M 10 x 16 – 200 | M27 x 50 – 200 |
| M 12 x 16 – 200 | M30 x 60 – 200 |
| M 14 x 20 – 200 | M33 x 60 – 200 |
| M 16 x 25 – 200 | M36 x 70 – 200 |
| M 18 x 30 – 200 | M42 x 80 – 200 |
|
Class |
Size |
Material |
Tensile strength |
Hardness |
Elongation δ% |
Reduction of cross-sectional area |
|
8.8 |
d ≤ M16 |
35 #, 45 # |
800 |
22~32 |
12 |
52 |
|
|
M18≤d≤ 24 |
35 #, 45 # |
830 |
23~34 |
12 |
52 |
|
|
d ≥ M27 |
40 Cr |
|
22~34 |
12 |
52 |
|
10.9 |
All Size |
40 Cr, 35CrMoA, |
1040 |
32~39 |
9 |
48 |
|
12.9 |
All Size |
35 CrMoA, 42CrMoA |
1220 |
39~44 |
8 |
44 |
Why Choose Us
High Quality
Our products are manufactured to the highest standards, utilizing premium materials and advanced manufacturing processes to ensure exceptional quality.
Rich Experience
With a commitment to strict quality control and attentive customer service, our experienced team is always ready to address your needs and guarantee complete customer satisfaction.
Quality Control
Our professional staff meticulously monitors the production process, conducts thorough product inspections, and ensures that every final product meets the required quality standards, guidelines, and specifications.
24-Hour Online Service
We strive to respond to all inquiries within 24 hours, and our dedicated teams are always available to assist you in case of any emergencies.
FAQs
Q: What is the typical tensile strength of Bolt Grade 10.9?
A: The typical tensile strength of Bolt Grade 10.9 is 1090 MPa, which is significantly higher than that of ordinary bolts. This high tensile strength allows it to withstand greater forces and ensure the stability of connected structures.
Q: What material is Bolt Grade 10.9 made of?
A: Bolt Grade 10.9 is primarily made of high-quality alloy steel materials such as 40Cr and 35CrMoA. These materials are chosen for their excellent strength, wear resistance, and fatigue resistance properties.
Q: Are Bolt Grade 10.9 bolts reusable?
A: Generally, Bolt Grade 10.9 bolts are not recommended for reuse after installation, especially those installed using the torque method. The torque coefficient may become unstable after reuse, affecting the preload and overall connection stability.
Q: What surface treatment options are available for Bolt Grade 10.9 bolts?
A: Bolt Grade 10.9 bolts can undergo various surface treatments such as galvanizing, hot-dip galvanizing, and painting. These treatments enhance corrosion resistance and extend the service life of the bolts by protecting them from environmental factors.
Q: What is the diameter range of Bolt Grade 10.9 bolts?
A: Bolt Grade 10.9 bolts are available in a diameter range from M6 to M30. This variety allows for flexibility in choosing the right bolt size for different applications and structures.
Q: Are there different thread types available for Bolt Grade 10.9 bolts?
A: Yes, Bolt Grade 10.9 bolts come with both coarse and fine thread options. Coarse threads are suitable for applications requiring high connecting force, while fine threads are ideal for precise adjustments.
Q: How do I ensure the proper installation of Bolt Grade 10.9 bolts?
A: Proper installation of Bolt Grade 10.9 bolts involves using the correct pretension torque and ensuring the bolt is aligned properly with the hole. Following manufacturer instructions and using appropriate tools are crucial for achieving a tight and reliable connection.
Q: What are the common applications of Bolt Grade 10.9 bolts?
A: Bolt Grade 10.9 bolts are commonly used in applications requiring high strength and durability, such as bridges, buildings, machinery, and automotive components. They ensure the structural integrity and safety of these systems.
Q: How does the corrosion resistance of Bolt Grade 10.9 bolts compare to other bolt grades?
A: Bolt Grade 10.9 bolts offer superior corrosion resistance compared to lower-grade bolts, thanks to their high-quality alloy steel material and optional surface treatments. This makes them suitable for use in harsh environments.
Q: Are there any specific safety considerations when using Bolt Grade 10.9 bolts?
A: When using Bolt Grade 10.9 bolts, it is important to adhere to manufacturer instructions and safety guidelines. Ensure proper storage, handling, and installation to avoid accidents. Additionally, regularly inspect bolts for any signs of wear or damage to maintain structural integrity.
Hot Tags: bolt grade 10.9, China bolt grade 10.9 manufacturers, suppliers, factory, Hex Bolt Din 933 Cl 8 8, , , ,