09CuPCrNiA weathering steel is an ordinary low-alloy steel and is also a steel for engineering structures. It is generally used in outdoor equipment. Weathering steel, that is, atmospheric corrosion resistant steel, 09CuPCrNiA is a low alloy steel series between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel. 09CuPCrNiA weathering steel has the characteristics of rust resistance, corrosion resistance and longevity of components, thinning and consumption reduction, labor saving and energy saving.
09CuPCrNiA weathering steel chemical composition, chemical elements (finished product melting analysis):
| C | Si | Mn | P | S | Ni | Cr | Cu |
| ≤0.12 | 0.25-0.75 | 0.2-0.5 | 0.07-0.12 | ≤0.02 | 0.12-0.65 | 0.3-1.25 | 0.25-0.5 |
09CuPCrNiA steel mechanical properties:
| Thickness | Mechanical properties | ||
| ≤6mm | ReL(MPa) | ≥355 | |
| Rm(MPa) | ≥490 | ||
| A(%) | ≥24 | ||
| Impact temperature (℃) | -40 | ||
| Akv(J) | ≥21 | Vertical | |
| Bending diameter | 1a | ||
| Bending angle | 180 | ||
| Remark | Transverse sampling for tensile test; ReL/Rm≤0.75; Delivery status: hot rolling, controlled rolling | ||
| >6-14mm | ReL(MPa) | ≥355 | |
| Rm(MPa) | ≥490 | ||
| A(%) | ≥24 | ||
| Impact temperature (℃) | -40 | ||
| Akv(J) | ≥21 | Vertical | |
| Bending diameter | 2a | ||
| Bending angle | 180 | ||
| Remark | Transverse sampling for tensile test; ReL/Rm≤0.75; Delivery status: hot rolling, controlled rolling | ||
The size, shape, weight and allowable deviation of 09CuPCrNiA steel plate shall comply with the provisions of GB/T 709 standard.
09CuPCrNiA weathering steel is mainly used in railways, vehicles, bridges, towers and other steel structures exposed to the atmosphere for a long time. It is used to manufacture structural parts such as containers, railway vehicles, oil derricks, seaport buildings, oil production platforms and containers containing hydrogen sulfide corrosive medium in chemical and petroleum equipment.
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