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The Q355B Equivalent ASTM Material
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The Q355B Equivalent ASTM Material

The Q355B Equivalent ASTM Material

Q355 steel is a low alloy, high-strength steel that is used in welded structures supporting stress and heavy loads. The Q references the yield point, while the number 355 indicates its yield strength. It also replaced Q345.

The Q355B equivalent ASTM material

Q355 steel  Product Introduction

 

The equivalent ASTM material for Q355B steel is ASTM A572 Grade 50. ASTM A572 Grade 50 is a structural steel with high strength and low alloy content that is widely utilized in structural applications. Both Q355B and ASTM A572 Grade 50 have a minimum yield strength of 355 MPa (50 ksi) and possess similar mechanical properties.

ASTM A572 Grade 50 offers excellent weldability and formability, making it suitable for a wide range of structural applications, including bridges, buildings, and machinery. It has a higher strength-to-weight ratio compared to many other steel grades, providing superior load-bearing capacity.

However, it is crucial to note that, while Q355B and ASTM A572 Grade 50 have certain similarities, they are not direct counterparts.

When comparing equivalencies between steel standards, keep in mind that chemical composition and mechanical qualities may vary slightly. When selecting a comparable ASTM material for Q355B steel, it is recommended that you examine the applicable specifications and standards or seek expert assistance for accurate information.

 

Q355 steel  Product Details

Carbon Equivalent (CEV)

Based on smelting analysis, steel delivered in hot rolled state.

    CEV (Mass fraction ≤%); Nominal thickness or diameter (d)
Steel Grade Quality Grade ≤ 30 30 < d ≤ 63 63 < d ≤ 150 150 < d ≤ 250 250 < d ≤ 400
Q355 Q355B 0.45 (CEV) 0.47 0.47 0.49 –
Q355C –
Q355D 0.49

 

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