What is the yield strength and tensile strength of 2 4mm diameter logging wire?

The diameter of the logging wire is generally required to have a tensile strength of more than 1500MPa.

Wire ropes twisted from galvanized steel wires can be used to enhance rust resistance.

Wire rope is a standard product in various industrial countries, and its diameter, number of rope strands, number of wires per share, tensile strength slag hopper degree and sufficient safety factor can be selected according to the needs of the application, and its specifications and models can be found in the relevant manuals. In addition to the wear of the outer layer of steel wire, the wire rope is mainly broken due to metal fatigue caused by repeated bending around the pulley and the drum, such as tung grinding, so the ratio of the pulley or drum to the diameter of the wire rope is an important factor in determining the life of the wire rope. The ratio is large, the steel wire bending stress wheel is small, and the life is long, but the mechanism is huge.

must be based on the use.

Yield Strength: MPa

Tensile strength: 108*1000n (16 4mm)=

Elongation :(96-80) 80=20%.

Yield strength: It is the yield limit of the metal material when the yield phenomenon occurs, that is, the stress that resists the slight plastic deformation. For metal materials without obvious yield, the stress value that produces the residual deformation is specified as its yield limit, which is called the conditional yield limit or yield strength.

External forces greater than this limit will cause the parts to fail permanently and cannot be recovered.

Tensile strength: It is the critical value of the transition from uniform plastic deformation to local concentrated plastic deformation of metal, and it is also the maximum bearing capacity of metal under static tensile conditions.

To characterize the resistance of the maximum uniform plastic deformation of the material, the deformation of the tensile specimen is uniform before the maximum tensile stress, but after exceeding, the metal begins to neck, that is, concentrated deformation.

Elongation: refers to the percentage (unit: %) of the original length of the hardened body of the sealing material under the action of tensile force

Yield Strength: MPa

Tensile strength 108*1000n (16 4mm)=

Elongation :(96-80) 80=20%.

Yield point of steel bar: When the steel or specimen is stretched, when the stress exceeds the elastic limit, even if the stress no longer increases, the steel or specimen still continues to undergo obvious plastic deformation, which is called yield, and the minimum stress value when the yield phenomenon is produced is the yield point.

Tensile strength: It is the critical value of the transition from uniform plastic deformation to local concentrated plastic deformation, and it is also the maximum bearing capacity of the metal under static tensile conditions.

Tensile strength is the resistance to the maximum uniform plastic deformation of the material, the deformation of the tensile specimen is uniform before the maximum tensile stress, but after exceeding, the metal begins to neck, that is, concentrated deformation; For brittle materials with no (or small) uniform plastic deformation, it reflects the breaking resistance of the material.

The symbol is RM (GB T 228-1987 old national standard stipulates that the tensile strength symbol is B), and the unit is MPa.

Elongation: refers to the percentage of the ratio of the elongation of the original gauge to the original gauge after the tensile fracture of the specimen. Elongation is an important parameter that indicates the uniform or stable deformation of a material.

The elongation is calculated as follows:

where lk - the length of the gauge after pulling off (mm); L0 - gauge length before pull-off (mm). When calculating, if the elongation is less than 5%, it is accurate; If it is greater than or equal to 5%, it is accurate to 1%. The arithmetic mean of the calculated data of no less than 3 specimens is taken as the test result.

Yield strength.

4mm²）= mpa

Tensile strength 108*1000N (16 4mm) = elongation (96-80) 80=20%.

Yield point of reinforcement s=fs a; (fs yield; a rebar cross-section) s=

Tensile strength of reinforcement b=fb a; (FB yield; a rebar cross-section) b = 108kn (16 2) 2*

Reinforcement elongation δ=[(l1-l0) l0]*100% (L1 reinforcement after breaking; L0 original gauge of steel bar; )

1. Yield point = tensile force area = ( a=

2. Tensile strength = tensile force area = (108 10 3) ( a = Note: tensile force is measured in Newton, and the area is measured in square meters.

3. Elongation = (l-l0) l0 = (96-80) 80=

Hang people, tell people that they are wrong, don't be blind

Tensile strength 108*1000n (8 4mm )=?

The classification of steel can be divided into four categories: section steel, steel plate, steel pipe, and steel wire, so what kind of steel are they?

1. Section steel.

There are many varieties of steel, and it is a solid long strip of steel with a certain cross-sectional shape and size. According to the different cross-sectional shapes, it is divided into two types: simple and complex cross-sections. The former includes round bars, square bars, flat bars, hexagonal bars and angle bars; The latter includes rails, I-beams, channel steels, window frame steels and special-shaped steels.

The diameter of the small round steel is called the wire.

2. Steel plates.

It is a flat steel with a large width-to-thickness ratio and surface area. According to the different thicknesses, there are three types: thin plate (thickness < 4mm), medium plate (thickness 4-25mm) and thick plate (thickness "25mm). Steel strips are included within the steel plate category.

3. Steel pipes.

It is a long strip of steel with a hollow section. According to its different cross-sectional shapes, it can be divided into round pipes, square pipes, hexagonal pipes and various special-shaped cross-section steel pipes. According to different processing technology, it can be divided into two categories: seamless steel pipe and welded steel pipe.

4. Steel wires.

Steel wire is another cold-worked product of wire. According to different shapes, it is divided into round steel wire, flat steel wire and triangular steel wire. In addition to direct use, steel wire is also used in the production of wire ropes, steel grain lines and other products.

How to identify the quality of steel: six look and listen.

Look at the appearance, look at the size of the specifications and the appearance of the color, the specifications are neat, the size is standardized, according to the properties of the steel, the general good steel, the surface has no impurities, and the color is uniform.

Look at the hardness, the hardness of the steel is not the same, according to the hardness properties of the steel, to judge, whether it is the steel you need, whether there is any difference in quality.

Look at the size, inferior steel, uneven, different sizes, size fluctuations, use a micrometer or tape measure to measure, see the size fluctuation.

Looking at the elasticity, the toughness and elastic limit of steel are different, and the surface of inferior steel will have cracks and poor elasticity.

Look at the nameplate of the steel, a good steel factory, the nameplate is standardized, the expression is clear, and the parameter data is based on evidence.

Look at the quality report of the steel, whether it is standardized, unified with the properties of the steel, and corresponding to your own requirements.

Listen, experienced, can be distinguished according to the business of steel, good steel, clear sound, no noise.

The nominal tensile strength of the strength of the screw is 800MPa, the nominal tensile strength of the strength of the screw is 400MPa, and the diameter of the screw with strength is d, then: 800x area 1 = 400x area 2, there are:

800x(d^2=32

D 6mm bolt strength grade introduction:

There are more than 10 grades of bolts for steel structure connection, 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:

Bolts of the performance class level, the meaning of which is:

1. The nominal tensile strength of the bolt material is 400MPa;

2. The yield ratio of the bolt material is;

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

Grade high-strength bolts, the material of which can be heat-treated, can reach:

1. The nominal tensile strength of the bolt material is 1000MPa;

2. The yield ratio of the bolt material is;

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

The first floor is wrong and illogical, the diameter is increased grade means that the yield strength of the bolt is 640MPa, and the grade indicates that the yield strength of the bolt is 320MPa

When you say quite, you mean being able to withstand equal tension or pressure, right?

f1=f2=p1s1=p2s2

Now p1 p2=2, then s1 s2=, s is the cross-sectional area of the screw, that is, the ratio of the cross-sectional area is, then the square ratio of the diameter is, so the ratio of the diameter is, so 4, the round is an integer, which is equivalent to the strength, and the diameter of the bolt m6.

:: Strength of the screw = 4*

The strength of the screw diameter is millimeters.