Grade 10#-Black Carbon Steel Square Pipe Welded Steel Pipe
Q345 grade: comprehensive mechanical performance is good, the low temperature performance may also, plasticity and good weldability, used in low pressure vessel, oil tank, vehicles, cranes, mining machinery, power stations, Bridges under moving load of the structure, mechanical parts, building structure, general metal parts, hot rolled or normalizing state, can be used in various structure below 40 ℃ cold areas.
(1). Widely used in Bridges, vehicles, ships, construction, pressure vessels and so on. (2). Suitable for hot rolling, controlled rolling, normalizing, normalizing, tempering and quenching state supply of engineering steel and general structure with thickness not less than 3mm steel plate, steel strip, section steel, steel bar.
| ASTM-572 Grade 50 |
| Chemical composition: C=0.45%, Mn=0.75%, P=0.04% max, S=0.05% max |
| Property | Value in metric unit | Value in US unit |
| Density | 7.872 *10³ | kg/m³ | 491.4 | lb/ft³ |
| Modulus of elasticity | 201 | GPa | 29100 | ksi |
| Thermal expansion (20 ºC) | 11.7*10-6 | ºCˉ¹ | 6.5*10-6 | in/(in* ºF) |
| Specific heat capacity | 486 | J/(kg*K) | 0.116 | BTU/(lb*ºF) |
| Thermal conductivity | 50.9 | W/(m*K) | 353 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 1.62*10-7 | Ohm*m | 1.62*10-5 | Ohm*cm |
| Tensile strength (hot rolled) | 565 | MPa | 81900 | psi |
| Yield strength (hot rolled) | 310 | MPa | 45000 | psi |
| Elongation (hot rolled) | 16 | % | 16 | % |
| Hardness (hot rolled) | 84 | RB | 84 | RB |
| Tensile strength (cold drawn) | 625 | MPa | 90600 | psi |
| Yield strength (cold drawn) | 530 | MPa | 76900 | psi |
| Elongation (cold drawn) | 12 | % | 12 | % |
| Hardness (cold drawn) | 88 | RB | 88 | RB |
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ERW Q345 25mm Mild Steel Square Tube 1 Inch X 1 Inch 2 In X 20 Ft 0.875" X 0.065" SS400 Images
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