Product: Plat Q345B GB
Kategori: Chinese Low-alloy High-strength Steel Plates
Standard: GB/T1591
Grades: Q345B
Equivalent Standard
Characteristic
Baja Q345B adalah pelat baja paduan rendah standar China, baja tahan tarik medium yang dibuat dengan proses rolling panas, dan digunakan untuk sejumlah keperluan manufaktur. Simbol Q345 menggantikan sebutan lama: 12MnV, 14MnNb, 16Mn, 16MnRE, 18Nb. Baja Q345B secara kualitas masih dibawah Baja Q690D
Chinese high strength steel, dimana yield strength baja Q690D sekitar 789 MPa.
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Availability
Thickness: 8 - 30 mm
Size: 1524 x 6096 mm or 5 x 20ft
Chemical Composition Plat Q345B
| Grade |
C |
Si |
Mn |
P |
S |
Nb |
Cu/V |
Cr/Ti |
Ni |
Mo |
| Q345B |
0.18 |
0.55 |
1.40 |
0.003 |
0.003 |
0.015-0.060 |
/0.02-0.15 |
/0.02-0.20 |
- |
- |
| SM490 |
0.18 Max |
0.55 Max |
1.60 Max |
0.035 Max |
0.035 Max |
0.036 |
0.05 |
0.02 |
0.01 |
0.001 |
Mechanical Properties Plat Q345B
| Properties |
Q345B |
SM490 |
| Tensile Strength (MPa) |
470 - 660 |
490 - 610 |
| Yield Strength (MPa) |
275 - 345 |
295 - 325 |
| Elongation (%) |
18 - 21 |
17 - 23 |
| Hardness（HB |
163-187 |
- |
Aplikasi
Chassis, , excavator bucket, long boom arms, mobile equipment, crane, highway bridges, building structures, offshore structures, and most structural activities.
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