
Product: Hot rolled 7% Nickel alloy steel plates for use in the water quenched and tempered condition, intended for the fabrication of welded pressure vessels.
A553 Type III steel product available : A553 Type III Steel plates, A553 Type III steel sheets,
A553 Type III steel standard :ASTM A553/A553M
ASTM A553/A553M specification includes the grades : A553 Type I, A553 Type II, A553 Type III,
A553 Type III delivery condition: Q&T(quenched and tempered)
A553 Type III pressure vessel steel chemical composition %
Grade |
C max |
Mn max |
P max |
S max |
Si |
Ni |
Mo |
Co max |
A553 Type III |
0.13 |
0.90 |
0.015 |
0.015 |
0.15-0.40 |
6.50-7.50 |
0.10-0.30 |
0.03 |
A553 Type III pressure vessel steel Mechanical properties
Class |
Tensile strength Rm MPa |
Yield strength ReH MPa min |
Elongation A% min in 50mm |
A553 Type III |
690-820 |
585 |
20 |
JOIN-WIN STEEL keeps enough quantity
A553 Type III steel in stock each month. We can meet our customer’s further process request like : cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.
Other grades of steel plates for pressure vessel and boiler equipment in standard:
A553 Type I pressure vessel steel plates
A553 Type II pressure vessel steel plates
SA553 Type I pressure vessel steel plates
SA553 Type II pressure vessel steel plates
SA553 Type III pressure vessel steel plates