Introduction
Q235 steel is equivalent to Japenese steel grade SS400 in application, the only difference is that ss400 steel requires only S,P composition < 0.050, Q235 has requirements for More element C, Si, Mn, S, P. Yield strength of q235 is >235Mpa, which is almost the same to SS400 245Mpa. Q represents the yield of this material, the latter 235, refers to the yield value of this material, at about 235MPA. With the increase of the thickness of steel plate, the yield value decreases. It is widely used in construction and engineering structures.
Q235 Overview
Q235 is a plain carbon structural steel that is used throughout China. It is also known as Q235A, Q235B, Q235C, and Q235D. Since it is mild steel, it is utilized in production without heat treatment. The Q designates the yield point, and the 235 indicates the yield strength. It has good plasticity and weldability.
Q235 Equivalent Materials
The Q235 steel can be substituted with equivalent materials that include A36 USA ASTM, Q235 China GB/T, and SS400 Vietnam/Japanese JIS.
Characteristics of Q235
As the thickness of the material increases, Q235’s yield value decreases. Due to its moderate carbon content, the performance is comprehensive and adequate. Q235 also matches well in strength, welding, and plasticity. Most often, it is rolled into a steel plate, rod, bar, or angle frame. It is most commonly used in the engineering and construction industries.
The Q235 steel material is in accordance with PRC standards. Carbon steel for special projects and purposes, like marine and bridge steel, typically uses carbon structural steel expression. However, the letter indicating intents and purposes is included at the end of steel grade.
While the Q235 grade steel plate has lower mechanical properties than the A36 materials, these materials can generally be substituted for one another, as long as there are no special requirements and needs involved. If only for the material’s mechanical properties, it is generally acknowledged that Q235 and A36 are similar to those of high-quality carbon structural steel.
Uses of Q235
Not only does Q235 possess toughness, weldability, and excellent plasticity, it retains strength while offering outstanding cold-bending performance. It is perfect for welded structures, including factory buildings, steel bars, towers, boilers, bridges, containers, vehicles, and more. Q235 can also be used as mechanical parts, such as stands, stressed rods, nuts, connecting rods, brackets, and other components. Q235 and varying grades of steel plates can be cut to specification.
Q235 Physical Properties
Physical Properties Metric US/Imperial Density 7.85 g/cc 0.284 lb/in³ Q235 Mechanical Properties
What is Q235 steel grade?
Mechanical Properties Metric US/Imperial Tensile Strength, Ultimate 400 – 550 MPa – Tensile Strength, Yield 250 MPa – Elongation at Break 20 % 20 % 23 % 23 % Modulus of Elasticity 200 GPa 29000 ksi Compressive Yield Strength 152 MPa 22000 psi Bulk Modulus 160 GPa 23200 ksi Poissons Ratio 0.26 0.26 Shear Modulus 79.3 GPa 11500 ksi
E250 BR is equvalent in indian standard ,IS standard IS 2062
- Different standard formulation parties:
A36 for American Standard ASME standard (ASTM specification equivalent) materials, SS400, Standard JIS G3101 (common structure with rolling steel) materials, Q235 GB700 standards GB material. GB700:Q235 G3101:SS400 JIS ASME:A36- Different chemical composition:
The content of Mn element in A36 due to the plate thickness (or diameter) of different instead, below 20mm, without Mn. Q235 of C, Si, Mn, S, P and other elements of the content have made a request, but SS400 as long as the S, P is less than 0.050, the other did not make a request.- Different mechanical property:
The tensile strength of A36 is Ksi 58~80 (about 400~550MPa), the yield strength is 36 Ksi (about 250MPa); the tensile strength of 370~500 is MPa Q235, and the yield strength is 235MPa; The tensile strength of 400~510 is MPa SS400, and the yield strength is 245MP (SS400 and Q235's mechanical properties are all in the case of steel plate thickness less than 16mm).
What is Q235 steel grade? Structural grade
SS400 is a way of marking the Japanese steel material, equivalent to the domestic Q235 steel. Foreign standards often classify the structural steel material according to the tensile strength, such as discount price sale SS400 plate, SS400 which means that the tensile strength is 400Mpa minimum.
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