ASTM A572 Grade 50 vs S355JR

ASTM A572 Grade 50 and S355JR are both high-strength low-alloy structural steel grades used in a variety of applications.

Here's a comparison between these two grades:

Chemical Composition:Carbon (C): 0.23%Manganese (Mn): 1.35%Phosphorus (P): 0.04% maxSulfur (S): 0.05% maxSilicon (Si): 0.40% maxCopper (Cu): 0.20% min (when specified)Niobium (Nb): 0.005-0.05% (when specified)

Mechanical Properties:Tensile Strength: 450-620 MPa (65-90 ksi)Yield Strength: 345 MPa (50 ksi) minElongation: 18% min in 8", 22% min in 2"

Applications:ASTM A572 Grade 50 is used in bridges, buildings, construction equipment, freight cars, machinery, truck parts, and transmission towers where high strength and improved weldability are required.

Chemical Composition:Carbon (C): 0.24%Manganese (Mn): 1.60%Phosphorus (P): 0.035% maxSulfur (S): 0.035% maxSilicon (Si): 0.55% max

Mechanical Properties:Tensile Strength: 470-630 MPaYield Strength: 355 MPa minElongation: 20% min in 8", 22% min in 2"

Applications:S355JR is a widely used structural steel grade in Europe and is typically used in general construction and engineering structures, such as bridges, ships, power plants, and building structures.

Chemical Composition: ASTM A572 Grade 50 and S355JR have similar carbon content but differ slightly in manganese and other alloying elements. The slight differences can influence their mechanical properties and weldability.

Mechanical Properties: Both grades have a minimum yield strength of 355 MPa, but ASTM A572 Grade 50 offers a higher tensile strength range, making it suitable for slightly more demanding applications.

Applications: ASTM A572 Grade 50 is commonly used in heavier construction applications requiring higher strength, while S355JR is versatile and widely used in various structural applications across Europe.

In summary, both ASTM A572 Grade 50 and S355JR are excellent choices for structural steel applications, with ASTM A572 Grade 50 providing higher strength capabilities and S355JR offering versatility and widespread use in European construction projects. The choice between them would depend on specific project requirements, regional standards, and application needs.

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GNEE Steel also supplies a variety of high-strength steel plates, such as A514 Grade F, A572 Grade 50, A588 Grade A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to info@gneesteels.com. You are welcome to consult us, and we are very willing to answer your questions.

FAQ

What is S355JR equivalent to?

S355JR equivalent grades have very close chemical composition and mechanical properties to that of S355JR steel. Both the S355JR equivalent grades Q345B, A572 Gr 50, ST52-3, SM490B and S355JR steel are main products of BBN steel.

What is structural steel grade S355JR?

S355JR steel has a high strength-to-weight ratio, making it suitable for use in load-bearing structures such as bridges, buildings, and offshore structures. It has a minimum yield strength of 355 N/mm², making it one of the strongest steel grades available.

What is the difference between S355JR and J2?

In S355JR and S355J2 steel, JR and J2 indicates the steel needs to do +20℃ impact test and -20℃ impact test respectively. The different impact temperature is the main difference between S355JR and S355J2 steel. S355J2 steel can better adapt to low temperature work condition than S355JR steel.

What does JR mean in steel?

The J means that the test was conducted with 27 joules of energy. This is followed by either an R for room temperature, or a number referring to the temperature the tests were conducted at. So JR is room temperature (plus 20 degrees) J0 is 0 degrees and J2 is -20 degrees.

Is S355 better than S275?

This grade of steel is stronger than its S275 counterpart with a minimum yield strength of 355 N/mm2 resulting in its S355 name. This grade is also available in plate, round bar, flat bar, and is even available in blocks.

What is the hardness of S355 jr?

Grade S355JR has a minimum yield strength of 355 MPa. The impact energy at a room temperature of 20°C is at least 27 joules.

What is S355 steel used for?

This structural steel is used in shipbuilding and railway vehicle construction. S355 steel also finds optimal application for the construction of machinery such as cranes and excavators, as well as in building and piping construction, ventilation systems and pumps.

What is the price of S355JR per kg?

Mild Steel, Grade: S355JR – 0.61 USD/kg | 610 USD/ton

What is the difference between S275JR and S355JR?

S275JR is carbon steel, while S355JR is low alloy steel. Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard. The S355JR low alloy steel is higher steel grade than carbon steel S275JR.