Product Parameters
| Products: | H beam |
| Grade: | Q235,SS400,ASTM A36,s235JR , S335JR |
| Standard: | JIS,GB,EN ,ASTM,DIN,AISI,BS |
| Length: | 6-12m |
| Flange Thickness: | 8mm-64mm |
| Flange width: | 50-400mm |
| Web thickness: | 8-45mm |
| Web Width: | 100mm~900mm |
| Delivery time: | 20 days after payment |
| Payment terms: | L/C,T/T |
| Supply ablitity: | 10000 Metric Ton/Metric Tons per Month |
| MOQ: | 5 Metric Ton/Metric Tons |
| Application: | Mechanical&manufacture,Steel structure,Shipbuilding,Bridging,Automobile chassis |
1. What grade of steel is Q345?
Q345 steel is from the 16 Mn steel grade, typically manufactured in a hot rolled steel coil or sheet or a hot rolled steel plate. It is an excellent choice when you need high-pressure durability.
2.What is the difference between Q235 and Q345 steel?
Q345 has a tensile strength range of 490-675 Mpa, while the Q235 has a 375-500 Mpa range. Q345 has a yield strength of ≥ 345 Mpa, while the Q235 has a ≥ 235 Mpa. Q345 has an elongation rate after fracture of ≥ 21%, while the Q235 has ≥ 26%.
3.Is Q345 steel good?
Known for its excellent mechanical properties, including a tensile strength of 470-660 MPa, good ductility, and toughness, Q345 steel is ideal for building bridges, buildings, and other structures. It offers good weldability and is readily available, making it a cost-effective choice.
4.What is Q345 equivalent to ASTM?
ASTM A572 Grade 50
ASTM A572 Grade 50 is the closest equivalent to Q345 steel in the United States, offering similar properties suitable for structural applications. Europe: EN 10025-2 S355JR or S355J2 are European equivalents to Q345 steel, known for their structural strength and good weldability.
5.What is the difference between Q345 and Q345R?
To put it simply, Q345 is an ordinary carbon structural steel material, with a yield strength of 345MPA, which can be used in a wide range of occasions. Q345R is a professional plate for containers, which requires non-destructive testing.