Q355 Q460 Angle Steel For Building Structure
Q355 is a high-strength low-alloy steel widely used in China, replacing Q345. This material has a minimum yield strength of 355 MPa (51 ksi), and a tensile strength of 470-630 MPa (68 to 91 ksi). Q355 is divided into three grades according to the standard of GB/T1591-2018: Q355AR, Q355M, Q355N.
The low-alloy high-strength structural steel Q460 produced in China has a yield strength of 460 MPa and was tested with a 16 mm diameter steel bar or bar with a tensile strength of 550-720 MPa.
Q355 Q460 Angle Steel For Building Structure Basic Info
| Name | Q355 Q460 Angle Steel For Building Structure |
| Type | Q355 Q460 etc |
| Shape | equal or unequal |
| Size | 25mm*25mm*3mm - 200mm*200mm*25mm |
| Thickness | 3mm - 25mm |
| Length | 6m,9m,12m or other length based on your demand |
| Surface | surface painted, galvanized |
| Packing | in bundle, packed with steel belts tightly |
q355 structural angle chemical composition and mechanical property
| Chemical Composition (Heat Analysis), %, ≤ | ||||||||||
| Steel Grade | Quality Grade | C | Si | Mn | P | S | Cr | Ni | Cu | N |
| Q355 | Q355B | 0.24 | 0.55 | 1.6 | 0.035 | 0.035 | 0.30 | 0.30 | 0.40 | 0.012 |
| Q355C | 0.20 | 0.030 | 0.030 | 0.012 | ||||||
| Q355D | 0.20 | 0.025 | 0.025 | – | ||||||
| Mechanical Properties | Metric | US/Imperial |
|---|---|---|
| Hardness, Brinell | 135 | 135 |
| Hardness, Rockwell B | 74 | 74 |
| Tensile Strength, Ultimate | 450 MPa | – |
| Tensile Strength, Yield | 345 MPa | – |
| Elongation at Break | 18 % | 18 % |
| 21 % | 21 % | |
| Bulk Modulus | 160 GPa | 23200 ksi |
| Shear Modulus | 80.0 GPa | 11600 ksi |
q460 steel l shape angle chemical composition and mechanical property
| Chemical Composition (GB/T 1591 – 2008) | ||||||||||||||||
| Steel Grade | Quality Grade | C % (≤) | Si (≤) | Mn (≤) | P (≤) | S (≤) | Nb (≤) | V (≤) | Ti (≤) | Cr (≤) | Ni (≤) | Cu (≤) | N (≤) | Mo (≤) | B (≤) | Als (≥) |
| Q460 | Q460C | 0.20 | 0.06 | 1.80 | 0.030 | 0.030 | 0.11 | 0.20 | 0.20 | 0.30 | 0.80 | 0.55 | 0.015 | 0.20 | 0.004 | 0.015 |
| Q460D | 0.030 | 0.025 | ||||||||||||||
| Q460E | 0.025 | 0.020 | ||||||||||||||
| Thickness or Dia. (Ø) mm; Yield Strength (≥N/mm2) | ||||||||||
| Steel Grade | Quality | Ø≤16 | 16< Ø ≤40 | 40 < Ø ≤63 | 63 < Ø ≤ 80 | 80 < Ø ≤ 100 | 100 < Ø ≤ 150 | 150 < Ø ≤ 200 | 200 < Ø ≤ 250 | 250 < Ø ≤ 400 |
| Q460 | Q460C | 460 | 450 | 430 | 410 | 410 | 390 | – | – | – |
| Dia. (Ø) mm; Tensile Strength (N/mm2) | |||||
| Steel Grade | Quality Level | Ø≤100 | 100 < Ø ≤ 150 | 150 < Ø ≤ 250 | 250 < Ø ≤ 400 |
| Q460 | Q460C | 520 – 720 | 530 – 700 | – | – |
Q355 Angle iron advantage
Advantages of galvanised Q355 Angle Steel:
1. Low treatment cost: the cost of hot dip galvanising against rust is lower than the cost of other paint coatings.
2. Long-lasting and durable: galvanised angle steel has the characteristics of glossy surface, uniform zinc layer, no leakage of plating, no dripping, strong adhesion and strong corrosion resistance.
3. Good reliability: there is a metallurgical bond between the galvanised layer and the steel. It becomes a part of the steel surface, so the durability of the coating is more reliable.
4. Strong toughness of the coating: the galvanised layer forms a special metallurgical structure. This structure can withstand mechanical damage during transport and use.
5. Comprehensive protection: every part of the plated parts can be coated with zinc, even in the depression, sharp corners and hidden places can be fully protected.
6. Time and effort saving: the galvanising process is faster than other coating methods and avoids the time required for painting on site after installation.
Application
Flower Pot Rack Made of Angle Steel
Pylons for High Voltage Transmission
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