The answer to this question depends on the material that is being compared. Grade 8 is a higher grade than 12.9 and is usually a stronger material. Grade 8 is made from medium carbon steel and is significantly harder than 12.9 grade.
It is heat-treated in a different manner so it will resist mechanical strain better than 12.9 grade. 12.9 grade is commonly used for fastening applications such as nuts and bolts or machine screws. Its properties are suitable for applications where it must resist vibration, stress and shear forces.
On the other hand, Grade 8 is much stronger and is used for applications such as suspension parts, shock absorbers, and tie rods. It is also typically used in overhead lifting and mining applications.
Therefore, Grade 8 is generally stronger than 12.9.
How strong are 12.9 bolts?
The strength of 12.9 bolts depends heavily on the material used to make them. 12.9 bolts come in a variety of materials such as steel, brass, and stainless steel, and each material has its own specific strength characteristics.
In general, 12.9 steel bolts have a minimum tensile strength of 180-200 ksi, making them one of the strongest commercially available bolts. The strength of brass and stainless steel 12.9 bolts is slightly lower than that of steel, with brass bolts having a tensile strength of about 130-170 ksi and stainless steel bolts having a tensile strength ranging from 90 to 200 ksi.
Is a 12.9 bolt stronger than Grade 8?
No, a 12.9 bolt is not necessarily stronger than a Grade 8 fastener. The Grade 8 designation indicates a greater tensile strength than 12.9, however the difference is so small that it is often negligible.
So much of the strength of a fastener depends on the material, design, and finishing processes employed. There are Grade 12.9 fasteners that are as strong as Grade 8 or even stronger in certain situations.
In general, the Grade 8 fastener is made of a higher grade of steel and is heat-treated for increased strength, making it slightly stronger than a 12.9 grade fastener. Ultimately, the strength of the fastener depends on its design and the application in which it is used.
What are 12.9 bolts used for?
12.9 bolts, also known as metric 12.9 bolts, are high-strength steel bolts that are often used for fastening two components together in engineering and manufacturing applications. These bolts are commonly used in the automotive, aerospace and general engineering industries to hold together components that require more clamping force than a standard bolt can provide.
The 12.9 grade of bolt was designated to denote the level of strength and alloy the bolt is made from and is the highest grade of hexagonal bolts. These bolts are intended for use in very high strength applications and are made from a medium-carbon, alloy steel with a tensile strength of up to 800 MPA.
Due to the strength of these bolts, they are better suited for applications requiring greater vibration resistance and a smoother finish. 12.9 bolts are commonly used in the suspension, brakes, fuel systems and powertrain components of automobiles, as well as in the aerospace and other high-performance engineering industries.
Are grade 12.9 bolts brittle?
Grade 12.9 bolts, classified as high-tensile bolts, are made from an alloy of materials that is not brittle. This alloy is typically 1-17% chromium, depending on the manufacturer and type of bolts, and is often paired with other materials like steel and nickel to create a strong yet not brittle fastener.
The alloy provides the bolts with greater tensile strength, meaning they are appropriate for use in extremely high stress or load-bearing areas and applications. Generally, Grade 12.9 bolts are some of the strongest bolts available, making them very resistant to breakage when used in the proper application.
What is the strongest grade bolt you can buy?
The strongest grade bolt you can buy is Grade 8 bolts. These bolts are made of an alloy steel with a tensile strength of 150,000 psi and a yield strength of 120,000 psi. The material from which Grade 8 bolts are made allows them to be hardened to a Rockwell hardness rating of between 32 and 40 HRC.
Grade 8 bolts meet the requirements of the Society of Automotive Engineers (SAE) and the American Society for Testing and Materials (ASTM) and so are perfect for heavy duty applications. Grade 8 bolts can be found in construction, automotive, and industrial applications and can be used in a variety of applications where high strength and longevity are required.
What bolt is the strongest?
The answer to this question depends on the context and specific purpose of the bolt. Generally speaking, Grade 8 bolts are considered to be the strongest commercially available bolts for most applications.
These bolts are made of medium carbon alloy steel and have a minimum tensile strength of 150,000 pounds per square inch. Grade 8 bolts have 6 evenly spaced radial lines on the head and are medium carbon alloy steel with a minimum tensile strength of 150,000 psi, making them suitable for heavy-duty applications such as heavy construction equipment, off-road vehicles, agricultural machinery, and industrial applications.
In terms of non-grade bolts, other materials such as titanium, aluminum alloy, and stainless steel can also be used depending on the application. Ultimately, the strength of a bolt will depend on the material grade and type used, therefore it is important to consider each application and material grade used to determine the strongest bolt for a given purpose.
Is 12.9 the strongest bolt?
No, 12.9 is not the strongest bolt. Bolt strength is determined by a grade or classification, and 12.9 is not the highest grade or classification available. The highest grade of bolt is typically graded at 10.9 or higher, and these bolts are made from a higher carbon steel alloy which provides them with greater strength and durability.
Grade 12.9 bolts are typically made from a medium-carbon alloy steel, making them less strong and durable than grade 10.9 bolts. Grade 12.9 bolts are suitable for many applications, but if you are looking for the strongest bolt for a specific application, it is best to look for bolts with higher grade ratings.
What is the equivalent of Grade 12.9 material?
Grade 12.9 is a grade of material most commonly used to make high strength bolts, screws and other fasteners. The equivalent grade of 12.9 is the metric grade 1140H, which has a minimum tensile strength of 1140 Newton Meters per square millimeter.
This grade of material, along with any other material that has a similar tensile strength, is the equivalent of Grade 12.9 and should be used for the same applications. Generally speaking, the higher the grade of material, the stronger it is and the higher the tensile strength.
With Grade 12.9 material being the highest grade available, it is the strongest material available and is typically used to create products that require extremely high strength, such as automotive components and large machinery parts.
How much weight can a 12.9 bolt hold?
The answer to this question depends on several factors including the grade, size/diameter, thread pitch and type of material from which the bolt is made. In general, 12.9 grade bolts are the strongest commercially available bolts and are most often made from hardened alloy steels.
These alloy steels have excellent tensile strength, meaning they can hold a significant amount of weight without failure. To determine the exact amount of weight a 12.9 bolt can hold, one must compare the bolt’s capacity to the potential load.
For example, a 6mm diameter 12.9 grade bolt made from alloy steel may hold up to 6,000 kilograms of tension if properly installed. In comparison, a 10mm diameter 12.9 grade bolt made from the same alloy steel may hold up to 10,000 kilograms of tension if securely fitted.
Ultimately, the amount of weight a 12.9 bolt can hold is dependent on its diameter and grade, as well as the quality of installation.
What is the tightening torque of a 12.9 grade bolt?
The tightening torque of a 12.9 grade bolt will depend on the size of the bolt and the kind of joint being used, as well as any additional joint requirements such as lubrication or type of thread. In general, 12.9 grade bolts require a tightening torque between 7.8-8.8 Newton meters (Nm).
For example, if you were using an M10 x 40mm 12.9 grade bolt in a steel joint, you would need a minimum torque of 7.8 Nm to ensure it is properly secured. If you are using a 12.9 grade bolt in a highly specialized joint, such as aerospace grade, you may need a higher torque than the general guidelines due to special requirements.
What is Grade 8 steel equivalent to?
Grade 8 steel is equivalent to medium-carbon alloy steel and is a type of medium-carbon steel, often referred to as SAE Grade 8. It is composed of carbon, manganese, phosphorus, sulfur, and silicon, and has a higher yield strength and tensile strength than other common steel grades.
Grade 8 steel is also resistant to shear, fatigue and compression, making it a popular choice for heavy-duty applications such as heavy machinery and construction projects. It can be used for both cold and hot forming, and is often used for the construction of bridges and other structures that require high load-bearing capabilities.
Additionally, Grade 8 steel is often used for parts that require high levels of corrosion resistance, such as those found in marine environments. In summary, Grade 8 steel is a popular structural steel option, renowned for its excellent yield strength, tensile strength, and resistance to fatigue and shear force.
What material is equivalent to Grade 8?
Grade 8 material is equivalent to an alloy steel containing nominally 17% chromium, 8% nickel, and balance iron. The tensile strength of this material is 150,000 psi (1034 Nmm2) or 131 ksi (907 Nmm2).
Grade 8 material is also equivalent to a medium carbon (0.45%) alloy steel containing nominally 0.30% carbon, 0.60%-0.90% manganese, 0.035% sulfur, and 0.04% phosphorous. The minimum tensile strength of this material is 130,000 psi (896 Nmm2).
Grade 8 material is also equivalent to an alloy steel containing nominally 0.30% carbon, 1.20% to 1.45% manganese, 0.20% molybdenum and 0.15% silicon. The minimum tensile strength of this material is 150,000 psi (1034 Nmm2).
Is Grade 8 stronger than stainless steel?
Grade 8 is a heat-treated chromium-vanadium alloy steel and is considered to be one of the strongest steels available. It is typically used for high-strength bolts, studs, and screws. While Grade 8 is strong and significantly harder than regular stainless steel, it is not necessarily stronger.
Grade 8 is usually chosen for applications involving high stress and significant loads. Stainless steel is a steel alloy made up of primarily iron and chromium and is resistant to corrosion. Depending on the alloy, stainless steel can be even stronger than Grade 8.
Types of stainless steel, such as martensitic and precipitation hardening can approach similar strength levels as Grade 8 if they are heat-treated properly. However, stainless steel is not inherently stronger than Grade 8 and the specific alloy used determines its strength.
Is Grade C same as Grade 8?
No, Grade C and Grade 8 are not the same. Grade C is typically used to refer to academic or educational performance, whereas Grade 8 is used to refer to performance in specific standardized tests or other such assessments, such as the IELTS.
In academic performance, Grade C typically indicates average or above average performance, and varies from school to school and country to country. On the other hand, Grade 8 is a score ranging from 0 to 9 that is typically assigned to performance in language tests like the IELTS.
