Description
Technical Parameters
Q550 Carbon Steel Round Bar
Q550 Round Bar Products Description
Q550 round stock metal is a structural steel with high strength and excellent mechanical properties, which is widely used in many fields.
Q550 solid steel round bar is represented by the Chinese phonetic letter (Q) representing the yield strength and the yield strength value (550). Q550 steel round bar complies with GB/T 16270-2009 and GB/T 1591-2008 standards.
Q550 round metal rod can be used for important (low temperature) high-strength structural parts: such as bridges, high-rise buildings, offshore platforms, etc.
Q550 Carbon Steel Round Bar Products Details
Chemical composition%of Q550 round stock metal
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Mo(％) | B(%) |
|---|---|---|---|---|---|---|---|---|
| Max 0.18 | Max 0.55 | 1.00-1.60 | 0.03 | 0.03 | Max 0.60 | Max 1.00 | Max 0.40 | Max 0.003 |
| Proof strength Rp0.2(MPa) |
Tensile strength Rm(MPa) |
Impact energy KV(J) |
Elongation at fracture A(%) |
Reduction in cross section on fracture Z(%) |
As-Heat-Treated Condition | Brinell NMness(HBW) |
|---|---|---|---|---|---|---|
| 438(≥) | 776(≥) | 12 | 11 | 12 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 223 |
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