Gnee Steel (Tianjin) Co., Ltd. is one of the most professional a36/a572gr50 w27*161 h shaped iron beam manufacturers and suppliers in China, also supports customized service. If you're going to buy a36/a572gr50 w27*161 h shaped iron beam made in China, welcome to get free sample from our factory. Quality products and low price are available.
A36/A572GR50 W27*161 h shaped iron beam
W27*161 h beam material properties comparison
| index | A36 (general purpose structural steel) | A572Gr50 (high strength low alloy steel) |
|---|---|---|
| Chemical composition | C≤0.25%,Mn 0.6%-1.2% | C≤0.23%, Mn 1.35%-1.65%, containing Nb/V |
| Yield Strength | ≥250MPa | ≥345MPa |
| tensile strength | 400-550MPa | 450-550MPa |
| Low temperature impact toughness | Normal temperature ≥27J (-30℃ needs to be customized) | -40℃≥27J |
| Applicable scenarios | Conventional buildings, light-load structures | Heavy-load bridges, energy facilities, low-temperature environments |
h section steel performance comparison
Mechanical properties
A36 h section steel: elongation ≥ 20%, excellent weldability, suitable for ordinary welding process.
A572Gr50 h beam: contains niobium/vanadium strengthening elements, and refines the grains through controlled rolling and controlled cooling (TMCP) process, with both high strength and toughness.
Production process
Hot rolling forming: controlled rolling process is used to optimize the uniformity of the structure.
Heat treatment: A572Gr50 steel h beam requires normalizing or isothermal quenching to improve low temperature performance.
h shaped steel application field comparison
A36 steel h column material: steel structure plant frame, ordinary bridge support; ship structure, highway guardrail.
A572Gr50 structural h beam material: large-span bridge main beam, wind power tower tube; port crane load-bearing components, low-temperature petrochemical equipment.
Welding requirements: A36 h beam structure needs to control heat input to avoid weld embrittlement; A572Gr50 needs to match E70/E80 welding materials, and thick plates need to be preheated to 120-150℃.
Processing restrictions: A572Gr50 h section beam needs edge grinding after cutting to prevent cracking of the NMened layer.
