Technical conditions for plates of SA203GrD

Gloria Steel Limited

  • Technical conditions for plates of SA203GrD0
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4-Dec-13
Steel Plate/Flat products
US $3,000.00 / MT
10.00 MT
L/C, T/T
China
Standard seaworthy export packing or as your requirement.
30 day(s).

Product Details

Technical conditions for plates of SA203GrD

1. Scope
The technical conditions apply to plates of SA203GrD with thickness range 8mm-100mm.
2. Adopt standard:
ASME SA203/SA203M Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel ASME SA20/SA20M Standard Specification for General Requirements for Steel Plates for Pressure Vessels
ASME SA370 Standard Test Methods and Definitions for 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 mm/+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 Mo V
Ladle analysis 0.17- 0.20 0.15- 0.35 0.38- 0.80 Max 0.012 Max 0.005 3.25- 3.70 Max 0.12 Max 0.05

4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The mechanical properties of SA203GrD shall meet the requirement as table 2&3.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa Elongation % Bend test
D=3a
8-60 Min 275 485-620 Min 21 180C un-cracked
61-100 Min 255 480-610 Min 21 180C un-cracked

4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA203GrD shall meet the requirements per table 3.
Table 3 Impact properties
Charpy-V Impact
Test temp.
Celsius degree Transverse
Average impact energy
-101 C Min 47J

4.5 SWHT: Simulated Post-Weld Heat Treatment of Mechanical Test Coupons shall be prepared in 590+/-20 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.
4.7 Ultrasonic inspection
Plates shall be ultrasonic inspected per ASTM A578/A578M level C.

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Gloria Steel Limited
23-Oct-2013
China
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