〣carbon structural steel description

Q235 ordinary carbon structural steel is also known as A3 steel.

Ordinary carbon structural steel - general plate is a kind of steel material.

Q is the yield limit of this material, and 235 is the yield value of this material, which is around 235 mpa. And with the increase of the thickness of the material and its yield value will be reduced, due to the moderate carbon content, better comprehensive performance, strength, plasticity and welding properties are better match, the most widely used.

〣performance

Density: 7.85g/cm^3

Elastic modulus (E/Gpa) : 200~210

Poisson's ratio (ν) : 0.25 to 0.33

Tensile strength (σb/MPa) : 370-500

Yield strength (thickness or diameter of 16mm or less) : 235

Material linear expansion coefficient α (1/°C) : 1.20E-05

Elongation (δ5/%) :

≥26 (a≤16mm)

≥25 (a> 16-40mm)

≥24 (a> 40-60mm)

≥23 (a> 60-100mm)

≥22 (a> 100-150mm)

≥21 (a> 150mm)

Where a is the thickness or diameter of steel.

In the plate, is the most common material, a general board series. One of the old ones was A3.

〣Categorize and use

Usually rolled into the main: wire or round steel, square steel, flat steel, Angle steel, I-beam, channel steel, window steel and other section steel, medium thickness steel plate.

1. It is widely used in buildings and engineering structures. Used for the production of steel bars or construction of plant frames, high-voltage transmission towers, Bridges, vehicles, boilers, vessels, ships, but also a large number of mechanical parts for performance requirements are not too high. C, D grade steel can also be used for some professional steel.

2, can be used for all kinds of mold handle and other unimportant mold parts.

3, the use of Q235 steel punch material, after quenching without tempering directly used, hardness of 36~40HRC, to solve the punch in use of cracking phenomenon.

〣parameter