ASTM A203 Grade D is a kind of Ni-alloy steel material used to fabric high temperature pressure vessels. ASTM A203 Grade D this property is based on it's Ni composition. A203 Grade D Pressure Vessel is used in fabricators serving industry, especially in the oil, gas and chemical supply markets.
ASTM A203 Grade D Pressure Vessel Nickel Plate chemical composition:
|
Grade |
C |
Mn |
P |
S |
Si |
Ni |
|
A203 Grade D |
0.17-0.20 |
0.88 |
0.025 |
0.025 |
0.13-0.45 |
3.18-3.82 |
ASTM A203 Grade D Nickel Plate mechanical properties:
|
Grade |
Tensile Strength MPa (ksi) |
Yield Strength MPa (ksi) |
% Elongation in 8 in.(200mm) min |
% Elongation in 2 in.(50mm) min |
|
A203 Grade D |
450-585 (65-85) |
255 (37) |
19 |
23 |
The maximum thickness of A203 GR.D Boiler plates is limited only by the capacity of the composition to meet the specified mechanical property requirements, however, current practice normally limits the maximum thickness of A203 GR.D Nickel plates furnished under 100 mm.
If approved by the purchaser for A203 GR.D, cooling rates faster than air cooling are permissible for improvement of the toughness, provided the plates are subsequently tempered at not less than 1100℉[595℃] for not less than ½ h.
If you need any grades of ASME SA203/ASTM A203 steel plates, please do not hesitate to contact us as following ways .
