ASTM A36 is a low-carbon structural steel widely used in construction, bridges, and machinery manufacturing. Its typical chemical composition includes carbon (≤0.25%), manganese (0.80-1.20%), etc., with a yield strength ≥250 MPa and a tensile strength of 400-550 MPa.

ASTM A36 is an American standard carbon structural steel with a yield strength ≥250 MPa, tensile strength 400-550 MPa, and elongation ≥20%. It contains ≤0.25% carbon and possesses good weldability, machinability, and low-temperature toughness. It is widely used in construction, bridge building, and machinery manufacturing.

A516 Gr70 Steel Plate Core Parameters

Standard: ASTM A516/A516M, specifically for medium and low temperature pressure vessels

Strength: Tensile strength 485-620 MPa (70-90 ksi), Yield strength ≥260 MPa

Chemical Composition: Carbon (C) ≤0.27%, Manganese (Mn) 0.85-1.20%, Phosphorus (P) ≤0.025%, Sulfur (S) ≤0.025%

Delivery Condition: Usually normalized

ASTM A283 Grade C is a low-carbon steel plate used in structural and pressure vessel applications where moderate strength and good weldability are required. It is part of the ASTM A283 standard, which covers four grades (A, B, C, D) with increasing strength levels.
Key Mechanical Properties
Property ASTM A283 Grade C
Yield Strength (min) 30,000 psi (205 MPa)
Tensile Strength (min) 55,000–75,000 psi (380–515 MPa)
Elongation (min, in 2") 23%
Carbon Content (max) 0.24%
Manganese (max) 0.90%
Note: Thicker plates may have slightly reduced yield strength.
Common Applications
Storage tanks (water, oil, gas).
Boiler shells & pressure vessels (low-pressure).
Structural components (brackets, frames).
Piping & general fabrication.

SS400 Carbon Steel Plate Core Parameters

Standard: Japanese Standard JIS G3101, corresponding to Chinese Standard Q235B

Strength: Tensile strength 400-510MPa, yield strength ≥245MPa (thickness ≤16mm)

Chemical Composition: Carbon ≤0.30%, sulfur/phosphorus ≤0.050

Thickness: 1-200mm (customizable)

Carbon steel plate is based on carbon steel, with a carbon content ranging from 0.02% to 2.11%. It can be categorized as low-carbon steel, medium-carbon steel, and high-carbon steel based on its carbon content. Its mechanical properties vary with its carbon content: higher carbon content increases hardness and strength, but reduces plasticity.
Processing and Applications
It can be processed using processes such as flame cutting and CNC stamping, making it suitable for applications in shipbuilding, mining machinery, and other fields.

S355JR Alloy Carbon Steel Plate Core Parameters

Standard: European Standard EN10025-2, corresponding to Chinese Standard Q355B

Strength: Yield strength ≥355MPa, tensile strength 470-630MPa

Chemical Composition: Carbon ≤0.22%, Manganese ≤1.60%, Phosphorus/Sulfur ≤0.025%

Impact Toughness: Impact energy at 20℃ ≥27J (JR grade)

Application Areas: Building structures, bridges, engineering machinery, and shipbuilding

S275 is a European standard non-alloy structural steel with a yield strength ≥275MPa, conforming to standard EN10025-.

Strength: Yield strength 275MPa, tensile strength 410-560MPa

Process: Hot-rolled/thermomechanically rolled, thickness 0.3-500mm

Applications: Building structures, shipbuilding, boilers, and other applications.

ASTM A572 Grade 50 is a high-strength low-alloy niobium-vanadium structural steel plate, conforming to the standard ASTM A572/A572M.

Strength Grade: Gr50 indicates a minimum yield strength of 50 ksi (approximately 345 MPa) and a tensile strength of 490-600 MPa.

Chemical Composition: Carbon ≤0.20%, Manganese ≤1.50%, Niobium (Nb) 0.005-0.05%.

Elongation: ≥22%-35% (for thickness ≤16 mm).

ASTM A36 is an American standard carbon structural steel with a yield strength ≥250 MPa, tensile strength 400-550 MPa, and elongation ≥20%. It contains ≤0.25% carbon and possesses good weldability, machinability, and low-temperature toughness. It is widely used in construction, bridge building, and machinery manufacturing.

Q345 is a Chinese low-alloy high-strength structural steel (GB/T 1591-2018 standard) widely used in construction, bridges, and heavy machinery due to its good strength, weldability, and toughness. It is equivalent to European S355 and ASTM A572 Grade 50.
Advantages
✅ Higher strength than Q235 (similar to ASTM A36).
✅ Good weldability & formability (low carbon content).
✅ Cost-effective for structural applications.
Applications
Construction: High-rise buildings, stadiums, bridges.
Heavy Machinery: Cranes, mining equipment, truck frames.
Pressure Vessels & Pipelines (Q345R variant).
Shipbuilding & Offshore Structures (higher grades like Q345D/E).

S355 is a European standard structural steel with a minimum yield strength of 355 MPa (51,500 psi). It is part of the EN 10025 series and is widely used in construction, heavy machinery, and engineering due to its high strength, weldability, and toughness.
Key Mechanical Properties
Property Value
Yield Strength (ReH) ≥355 MPa (varies by thickness)
Tensile Strength (Rm) 470–630 MPa
Elongation (A₅) 20–22% (depends on grade)
Impact Toughness Tested at +20°C to –40°C (based on subgrade)
Carbon Content (C) ≤0.24% (low carbon for weldability)
Note: Thinner plates have higher yield strength (e.g., 355 MPa at ≤16mm, decreases to 325 MPa at >40mm).
Applications of S355 Steel Plate
Construction: Bridges, high-rise buildings, stadiums.
Heavy Equipment: Cranes, mining machinery, bulldozers.
Offshore & Wind Energy: Platforms, turbine towers (S355NL).
Transportation: Shipbuilding, rail cars, truck chassis.