supercritical boiler plates of SA387Gr11CL2

Roll over the image to zoom in

Posted On

4-Dec-13

Product Details

Products
3. Dimension, Shape, Weight and Permissible 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 Ni Cu Cr Mo V NB
Ladle analysis 0.05- 0.17 0.50- 0.80 0.40- 0.65 Max 0.030 Max 0.020 Max 0.40 Max 0.25 1.00- 1.50 0.45- 0.65 Max 0.03 Max 0.02
Product analysis 0.04- 0.17 0.44- 0.86 0.35- 0.73 Max 0.030 Max 0.020 Max 0.43 Max 0.27 0.94- 1.56 0.40- 0.70 Max 0.04 Max 0.02

Note:
1) Ladle analysis sampling per furnace and product analysis per each PC finished product.
2) Mark “*” element V max 0.10% and Nb max 0.05% in the purchase order.

4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The mechanical properties of SA387Gr11CL2 shall meet the requirement as table 2&3.
Table 2 Tensile properties
Tensile TEMP Yield strength MPa Tensile strength MPa Elongation % Bend test
D=3a
Room Temp +20C Min 310 515-690 Min 22 180C un-cracked
High Temp tensile test Min 219 Min 400 Testing at +400 Celsius degree

4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA387Gr11CL2 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

View More