Technical conditions for plates of SA387Gr22CL2 us

Gloria Steel Limited

  • Technical conditions for plates of SA387Gr22CL2 us0
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4-12-13
US $3 000,00 / Т
10,00 Т
L/C, T/T
Standard seaworthy export packing or as your requirement.
30 день(ни).

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Technical conditions for plates of SA387Gr22CL2 used for nuclear power plant

1. Scope
The technical conditions apply to plates of SA387Gr22CL2 used for nuclear power plant, equivalent to MPS-GDFT-CPR1000-Gr22-PL specification.
2. Adopt standard:
ASME SA387/SA387M Specification for pressure vessel plates, alloy steel, Chromium-Molybdenum
ASME SA20/SA20M Standard Specification for General Requirements for Steel Plates for Pressure Vessels
ASME SA370 Standard Test Methods and Definitions fo
r Mechanical Testing of Steel 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/+2.5mm
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
Grade Type C Si Mn P S Mo
SA387Gr22CL2 Ladle analysis 0.05- 0.15 Max 0.50 0.30- 0.60 Max 0.025 Max 0.010 0.87- 1.13
Product analysis 0.05- 0.15 Max 0.50 0.30- 0.60 Max 0.025 Max 0.015 0.87- 1.13


4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The mechanical properties of SA387Gr22CL2 shall meet the requirement as table 2&3.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa Elongation % High temp. 350C tensile test
8-120 Min 310 515-690 Min 18 Rp0.2>=185MPa

4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA387Gr22CL2 shall meet the requirements per table 3.
Table 3 Impact properties
Grade Sampling size Room temp. Transverse Akv(J)
SA387Gr22CL2 10x10x55 Min 45
7.5x10x55 Min 39
5x10x55 Min 30


4.5 SWHT: Simulated Post-Weld Heat Treatment of Mechanical Test Coupons shall be prepared in 600+/-10 C with min.5 minute per each mm of thickness.
4.6 Surface quality
The surface quality of plates shall be accordance with ASTM A20/A20M.


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23-10-2013
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