Product Name: High-strength low-alloy structural steel

Grade: Q345

Size (mm): Thickness T :10-50; width W :1800-2700; length L :6000-12700

Executive Standard: GB / T 1591-2008

Product Scope:

Overall performance, good weldability and low temperature impact toughness, suitable for machining, fabrication and welding structural parts transportation vehicles, chemical equipment, pipe, structural engineering, construction steel, machinery and other substrates.

 

Mechanical Properties

Tensile strength :490-675Mpa Yield strength: ≥ 345Mpa Elongation: ≥ 22%

 

Chemical composition

Q345A: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345B: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345C: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.030, Al ≥ 0.015;

Q345D: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.025, Al ≥ 0.015;

Q345E: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.025, S ≤ 0.020, Al ≥ 0.015;

Q345A, B, C, D, E inclusive Nb ≤0.07, V ≤0.15, Ti ≤0.20, Cr ≤0.30, Ni ≤0.012, Mo ≤0.10.

Product Name: High-strength low-alloy structural steel

Grade: Q345

Size (mm): Thickness T :10-50; width W :1800-2700; length L :6000-12700

Executive Standard: GB / T 1591-2008

Product Scope:

Overall performance, good weldability and low temperature impact toughness, suitable for machining, fabrication and welding structural parts transportation vehicles, chemical equipment, pipe, structural engineering, construction steel, machinery and other substrates.

 

Mechanical Properties

Tensile strength :490-675Mpa Yield strength: ≥ 345Mpa Elongation: ≥ 22%

 

Chemical composition

Q345A: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345B: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345C: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.030, Al ≥ 0.015;

Q345D: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.025, Al ≥ 0.015;

Q345E: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.025, S ≤ 0.020, Al ≥ 0.015;

Q345A, B, C, D, E inclusive Nb ≤0.07, V ≤0.15, Ti ≤0.20, Cr ≤0.30, Ni ≤0.012, Mo ≤0.10.

Product Name: High-strength low-alloy structural steel

Grade: Q345

Size (mm): Thickness T :10-50; width W :1800-2700; length L :6000-12700

Executive Standard: GB / T 1591-2008

Product Scope:

Overall performance, good weldability and low temperature impact toughness, suitable for machining, fabrication and welding structural parts transportation vehicles, chemical equipment, pipe, structural engineering, construction steel, machinery and other substrates.

 

Mechanical Properties

Tensile strength :490-675Mpa Yield strength: ≥ 345Mpa Elongation: ≥ 22%

 

Chemical composition

Q345A: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345B: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345C: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.030, Al ≥ 0.015;

Q345D: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.025, Al ≥ 0.015;

Q345E: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.025, S ≤ 0.020, Al ≥ 0.015;

Q345A, B, C, D, E inclusive Nb ≤0.07, V ≤0.15, Ti ≤0.20, Cr ≤0.30, Ni ≤0.012, Mo ≤0.10.

Product Name: High-strength low-alloy structural steel

Grade: Q345

Size (mm): Thickness T :10-50; width W :1800-2700; length L :6000-12700

Executive Standard: GB / T 1591-2008

Product Scope:

Overall performance, good weldability and low temperature impact toughness, suitable for machining, fabrication and welding structural parts transportation vehicles, chemical equipment, pipe, structural engineering, construction steel, machinery and other substrates.

 

Mechanical Properties

Tensile strength :490-675Mpa Yield strength: ≥ 345Mpa Elongation: ≥ 22%

 

Chemical composition

Q345A: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345B: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345C: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.030, Al ≥ 0.015;

Q345D: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.025, Al ≥ 0.015;

Q345E: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.025, S ≤ 0.020, Al ≥ 0.015;

Q345A, B, C, D, E inclusive Nb ≤0.07, V ≤0.15, Ti ≤0.20, Cr ≤0.30, Ni ≤0.012, Mo ≤0.10.

Product Name: High-strength low-alloy structural steel

Grade: Q345

Size (mm): Thickness T :10-50; width W :1800-2700; length L :6000-12700

Executive Standard: GB / T 1591-2008

Product Scope:

Overall performance, good weldability and low temperature impact toughness, suitable for machining, fabrication and welding structural parts transportation vehicles, chemical equipment, pipe, structural engineering, construction steel, machinery and other substrates.

 

Mechanical Properties

Tensile strength :490-675Mpa Yield strength: ≥ 345Mpa Elongation: ≥ 22%

 

Chemical composition

Q345A: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345B: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.035, S ≤ 0.035;

Q345C: C ≤ 0.20, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.030, Al ≥ 0.015;

Q345D: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.030, S ≤ 0.025, Al ≥ 0.015;

Q345E: C ≤ 0.18, Mn ≤ 1.70, Si ≤ 0.50, P ≤ 0.025, S ≤ 0.020, Al ≥ 0.015;

Q345A, B, C, D, E inclusive Nb ≤0.07, V ≤0.15, Ti ≤0.20, Cr ≤0.30, Ni ≤0.012, Mo ≤0.10.

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