Q235 SS400 Equal Angle Steel

Q235 steel is a carbon structural steel. It is equivalent to A3 and C3 steel in the old standard GB700-79 grade, which is the grade of Russian TOCT. The Q in the steel number stands for yield strength. Under normal circumstances, the steel is used directly without heat treatment. ss400 is a way of marking Japanese steel materials and is a judgment standard, equivalent to the domestic Q235 steel (also known as A3 steel). Foreign standard structural steel is often classified by tensile strength, such as SS400 (Japan is so marked), of which 400 means that the minimum value of σb is 400MPa Ultra-high strength steel refers to σb≥1373 Mpa steel.

Products Description

Physical properties of both SS400 and mild steel play a significant role in determining their suitability for different applications.

The SS400 has a density of 7.85g/cm3, which influences its weight and strength. Its hardness is measured in the Brinell scale, showing relatively low hardness but reasonable toughness, providing good resistance to cracking.

The thermal conductivity of SS400 is approximately 25.93 W/mK, allowing heat to distribute evenly across the material, making it suitable for applications requiring temperature stability. The electrical conductivity, while not its primary feature, is sufficient for most construction applications. Its magnetic properties are comparable to that of mild steel, making it suitable for applications where magnetism is essential.

On the other hand, mild steel has a similar density to SS400, contributing to its strength and weight characteristics. It exhibits a higher hardness but lower toughness than the SS400, making it less resistant to cracking but more durable.

The thermal conductivity of mild steel is higher, around 37.2 W/mK, while its electrical conductivity and magnetic properties are quite similar to SS400. Therefore, the choice between these two materials depends on the specific requirements of the application.

Q235 Physical Properties

Physical Properties	Metric	US/Imperial
Density	7.85 g/cc	0.284 lb/in³

Q235 Mechanical Properties

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

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Product Details

Product Name	Q235 SS400 equal angle steel
Length	As your required
Standard	ASTM/ GB/ JIS/ EN ect.
Delivery Time	According to your quantity
Payment Terms	FOB/ CIF/ EXW/ DDP
Origin	China
Sample	Yes
Tolerance	±0.3
Packing	Packed with steel belts tightly, in bundle
MOQ	1 Ton

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