GB/T 1591 Q345B Steel: Supply & Demand
Buyer RFQ demand against seller listing supply for GB/T 1591 Q345B, broken down by form. Signals are indicative and derived from listings and RFQs.
Last updated: 16 Oct 2026, 4:00 AM
Live Signal: This grade’s supply and demand by form, from listings and RFQs open right now. Use this to act today. For example, “Is there a buyer gap in this grade’s round bar this week?”
| Form |
Supply |
Demand |
Status |
Price Band (Rs./MT) |
| Plate |
2 |
0 |
Low Activity |
Insufficient data
|
Disclaimer: All information on this page is indicative only and derived from posted listings and RFQs on M-EX. It does not constitute a market price quote or investment advice. M-EX and GTE make no representations as to accuracy or completeness. Actual activity depends on quantity, quality, payment terms and other commercial factors agreed between buyers and sellers.
GB/T 1591 Q345B is a Structural Steel grade: Low alloy high strength structural steel with good toughness, weldability and mechanical performance. Widely used in bridges, heavy structures and engineering machinery.
Typical applications: bridges, construction equipment, cranes, heavy structures, pressure vessels, machinery.
Equivalent / Similar Grades (3)
| Grade |
Standard |
Region |
|
S355JR
|
EN 10025 |
Europe |
|
SM490A
|
JIS G3106 |
Japan |
|
09G2S
|
GOST |
Russia |
Chemical Composition (%)
| C |
Si |
Mn |
S |
P |
V |
Nb |
Ti |
| <=0.20 |
<=0.50 |
1.00-1.60 |
<=0.035 |
<=0.035 |
<=0.20 |
<=0.07 |
<=0.20 |
Mechanical Properties
| Tensile Strength |
470-630 MPa |
| Yield Strength |
>=345 MPa |
| Elongation |
>=21% |
| Impact Energy |
>=34 J |