Technical conditions for plates of SA299GrA

Gloria Steel Limited

  • Technical conditions for plates of SA299GrA0
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4-Dec-13
Steel
US $3,000.00 / MT
10.00 MT
L/C, T/T
Standard seaworthy export packing or as your requirement.
30 day(s).

Product Details

Technical conditions for plates of SA299GrA

1. Scope
The technical conditions apply to plates of SA299GrA with thickness range 25mm-200mm for weldable boiler and other pressure vessel tank.
2. Adopt standard:
ASME SA299/SA299M Standard Specification for Pressure Vessel Plates, Carbon Steel, Manganese-Silicon
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 Cr
Ladle analysis Max 0.28 0.15- 0.40 0.90- 0.50 Max 0.020 Max 0.010 Max 0.25 Max 0.12 Max 0.03 Max 0.25
Product analysis Max 0.28 0.13- 0.45 0.84- 1.62 Max 0.025 Max 0.015 Max 0.25 Max 0.12 Max 0.03 Max 0.25
Note: Cu+Ni+Cr+Mo+V =< 0.70%

4.2 Steel making process: EAF+LF/VD
4.3 Mechanical properties
The SWHT mechanical properties of SA299GrA shall meet the requirement as table 2&3&4.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa Elongation % Bend test
D=4a
25-200 Min 275 515-655 Min 19 180C un-cracked

4.4 Impact properties
Impact test in the longitudinal and transverse for plates of SA299GrA shall meet the requirements per table 3.
Table 3 Impact properties
Charpy-V Impact
Test temp.
Celsius degree Transverse
Average impact energy
0 C Min 27J

4.5 Minimum values for the proof strength Rp0.2 at elevated temperatures shall meet the requirements per table 4.
Table 4 Tensile properties
Test TEMP Thickness mm 200C 250C 300C 350C 375C 400C
Rp0.2
Min (MPa) >25-200 237 227 216 202 196 191

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Gloria Steel Limited
23-Oct-2013
China
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