ASTM A285 Grade A is a carbon‑steel pressure vessel plate designed for low‑to‑intermediate temperature service where moderate strength and reliable forming properties are required. As the lowest‑strength grade within the A285 family, Grade A offers excellent weldability, stable ductility, and predictable performance in non‑critical pressure applications such as storage tanks, welded containers, and low‑pressure vessels. Its low carbon content ensures easy fabrication and consistent behavior during cutting, bending, and welding operations.
Chemical Composition

C	Mn	P	S
≤0.17	≤0.90	≤0.025	≤ 0.025

 
Mechanical Properties

Property	Yield Strength	Tensile Strength	Elongation
Requirement	≥ 165 MPa	380-515MPa	≥ 27%

 
Dimensions

Thickness	3–150 mm
Width	1220–4200 mm
Length	5000–18000 mm
Supports custom cutting and shaping.

 

Applications

• Low‑pressure storage tanks

• Welded containers

• Low‑temperature pressure vessels

• Industrial tanks and utility vessels

• Non‑critical pressure components requiring good ductility