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1. applicable range: the technology conditions apply to liquid zinc corrosion resistance with steel plates.
2. Brand: WRD
3. The size, shape, weight and deviation should be allowed to meet the provisions of the GB709-88.
4. Technical requirements
4.1 chemical composition (melting analysis, %)
The chemical composition of steel (melting analysis, %) should be in accordance with table 1
table1
|
C |
Si |
Mn |
P |
S |
Als |
Cr |
Cu |
Mo |
Ni |
Nb |
|
≤0.09 |
≤0.03 |
≤0.60 |
≤0.010 |
≤0.015 |
≤0.050 |
≤0.10 |
≤0.20 |
≤0.10 |
≤0.10 |
≤0.025 |
4.2 mechanical properties
Steel plate of the transverse tensile testing results should comply with the provisions of the table 2.
Table2
|
Rm，MPa |
A，％ |
|
≥350 |
≥28 |
4.3 delivery status: the hot rolling
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