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1, Applicable scope:this technical agreement applicable to not more than 40 mm thickness of Mn2V 45 steel plate.
2, size, shape, weight and allow deviation
2.1 thickness dimension tolerance:-0.5-+ 0.6 mm, try to control lower limit
2.2 steel plate to the rest of the size, shape, weight deviation should be allowed to meet the provisions of the GB709-88 standard.
3. Technical requirements
3.1 the chemical composition of the steel plate (melting analysis) should comply with the provisions of the table. Wi %
|
C |
Si |
Mn |
V |
P |
S |
|
0.42- 0.49 |
≤ 0.25 |
1.40- 1.80 |
0.03- 0.16 |
≤ 0.025 |
≤ 0.025 |
3.3 delivery status: the hot rolling
3.4 mechanical performance: provide measured value ofhardness HB.
3.5 provide the mechanical properties of the samples (σb, ψ, the delta s)
3.6 standard and quality should comply with the regulations of the GB3274-88 standard.
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