Technical conditions for plates of SA387Gr21CL2

Gloria Steel Limited

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发表于

13年12月4日

类别

钢

关键词

SA387Gr21CL2 Technical conditions plates

价格/单位

US $3,000.00 / 公吨

最少订货量

10.00 公吨

付款方式

L/C, T/T

产品产地

China

包装条件

Standard seaworthy export packing or as your requirement.

交货时间

30 天

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产品详细信息

ible Deviation
The dimension, shape, weight and permissible deviation shall meet the requirements of ASME SA20/SA20M.
The thickness toleration: -0.25mm/+3.5mm
4. Technical conditions
4.1 Chemical composition (Ladle analysis)
The chemical composition of plates shall be accordance with the following table 1.
Table 1 Chemical composition (Ladle analysis)
Thickness
mm C Si Mn P S Cu Cr Mo V NB
Ladle analysis 0.05- 0.15 Max 0.50 0.30- 0.60 Max 0.030 Max 0.020 Max 0.25 2.75- 3.25 0.90- 1.10 Max 0.03 Max 0.02
Product analysis 0.04- 0.15 Max 0.50 0.35- 0.63 Max 0.030 Max 0.020 Max 0.27 2.63- 3.37 0.85- 1.15 Max 0.04 Max 0.02

Note: Ladle analysis sampling per furnace and product analysis per each PC finished product.

4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The mechanical properties of SA387Gr21CL2 shall meet the requirement as table 2&3.
Table 2 Tensile properties
Yield strength MPa Tensile strength MPa Elongation % Bend test
D=3a
Min 310 515-690 Min 18 180C un-cracked

4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA387Gr21CL2 shall meet the requirements per table 3.
Table 3 Impact properties
Charpy-V Impact test
Test temp.
Celsius degree Transverse
Average impact energy
+20C Min 31J

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