Can the performance level of the gasket made of 65Mn material reach 8 or 8?

Whether it is 65mn or other materials.

The performance level is not expressed by 8 or grade, but by HV, e.g. standard series, nominal size d=8mm, performance level 100HV, without surface treatment.

The flat washers are labeled as: Gasket GB95-85 8 100HV. Only bolts and nuts have performance grades of 8, grades, etc., such as:

Hexagonal head bolt with thread specification D=M12, nominal length L=80mm, performance grade, surface oxidation, and grade A.

Another example: type 1 hexagon nut with thread specification D=M12, performance grade 10, no surface treatment, grade A. Therefore, the performance level of the gasket made of 65mn material cannot be said whether it can reach the level.

Stainless steel bolts have a difference in strength, but the grade is generally written 50, 70, 80 and, different.

Nowadays, when villas are decorated, many owners will choose stainless steel as the material for stairs. Therefore, I pay great attention to how to maintain stainless steel handrails.

1. When scrubbing stainless steel stair handrails, you must not use rigid cotton to clean, because rigid cotton scrubbing will have metal particles attached to the surface, and if you have a long time, it is particularly easy to produce rust spots, which will shorten its service life.

2. When cleaning stainless steel guardrails, it is also necessary to avoid using steel brushes or poor brushes, which are extremely easy to scratch the surface of these stainless steel handrails.

3. It is best to use a sponge or rag to clean the stainless steel handrail, and then with some neutral detergents, you can become very clean by gently wiping, and after the wet cloth is scrubbed, it is best to wipe it with a dry cloth.

4. It is best not to contact the stainless steel stair handrail with some chemicals, strong bleaching powder, and soap, because the material and these substances will have a chemical reaction. In case of accidental contact, scrub the stair handrail with clean water immediately.

There are many types of stainless steel bolts, and even if there are dozens of them, and different specifications, their use purposes are also different. For example: hexagon bolts, hexagon tip set screws, semi-round head hexagon screws, cross groove large flat head self-tapping nails, hex nuts, wing nuts and so on.

Foshan Dahongwang Stainless Steel Co., Ltd., located in Foshan City, Guangdong Province, is a famous stainless steel production base in China, the company set stainless steel raw materials, color stainless steel research and development, Foshan stainless steel wholesale, processing, sales as one of the stainless steel comprehensive enterprises. Web Links.

Bolts made of the same material, the performance level is not necessarily the same, the same bolt made of B7, can be grade, can also be grade, can also be grade, bolt performance grade not only depends on the material, mainly in heat treatment.

bolt grade; bolt performance rating; The meaning of the bolt at the performance level is: 1. The bolt material is male; 3. The nominal yield strength of the bolt material is 400; Performance grade level high-strength bolts, the material of which has been heat-treated; 3. The nominal yield strength of the bolt material is up to 1000; The meaning of bolt performance grade is the international standard, the same performance level;

bolt grade; There are more than 10 grades of bolt performance grades, and the intermediate and above bolts are made of low-carbon alloy steel or medium-carbon steel and are heat-treated (quenched and tempered), which are commonly known as high-strength bolts, and the rest are commonly known as ordinary bolts. The bolt performance grade is composed of two numbers, which represent the nominal tensile strength value and yield ratio of the bolt material.

For example: a bolt at the performance class level, which means:

1. The nominal tensile strength of the bolt material is up to 400MPa; 2. The yield ratio of the bolt material is;

3. The nominal yield strength of the bolt material is up to 400 grades.

Performance grade level high-strength bolts, after heat treatment, the material can reach: 1. The nominal tensile strength of the bolt material is up to 1000MPa; 2. The yield ratio of the bolt material is;

3. The nominal yield strength of the bolt material is up to 1000 grades.

The meaning of bolt performance grade is the international standard, the same performance level of bolts, regardless of the difference in material and origin, its performance is the same, and only the performance grade can be selected in the design.

SUS304, SUS316 are not required to reach the grade, GB T901, HG20613 and other standards specified in the stainless steel bolt performance is A2-50, A2-70, A4-70, etc., the maximum value is 70, that is, equivalent to grade 7. The HG20634, SH3404 and other standards directly stipulate that the tensile strength of bolts made of 304,316 materials after heat treatment is 520MPa, which is equivalent to a little more than grade 5.

I won't say, if you look at the picture above, isn't it the best,,, you can check this standard.

Refers to tensile strength.

Not necessarily, the grade screws are about the same as those of the A2 70.

Refers to the intensity level It doesn't have to be difficult to say this.