ASTM A285 Grade C is the highest‑strength grade within the A285 pressure‑vessel steel series, offering improved tensile performance while maintaining good ductility and dependable weldability. Designed for low‑to‑intermediate temperature service, A285 Grade C is widely used in welded storage tanks, industrial containers, and low‑pressure vessels where stable forming behavior and consistent mechanical properties are required. Its balanced strength and fabrication characteristics make it suitable for general pressure‑bearing components across various industrial sectors.
Chemical Composition

C	Mn	P	S
≤0.17	≤0.90	≤0.035	≤ 0.035

 
Mechanical Properties

Property	Yield Strength	Tensile Strength	Elongation
Requirement	≥ 205 MPa	485-620MPa	≥ 23%

 
Dimensions

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

 
 Stock & Processing

• Regular stock of A285 Grade C plates

• Customized dimensions available

• Cutting, drilling, welding, bending, machining

• Fast delivery and global supply capability

Applications

• Low‑pressure storage tanks

• Welded industrial containers

• Low‑to‑intermediate temperature pressure vessels

• Utility tanks and non‑critical pressure components

• Fabricated structures requiring moderate‑to‑higher strength