Introduction to A572Gr50 Steel Plate

Overview

A572Gr50 is a high-strength low-alloy niobium-vanadium structural steel plate specified under the ASTM A572/A572M standard (American Society for Testing and Materials). As a low-alloy high-strength steel (HSLA), it is designed to meet rigorous strength requirements while maintaining formability and weldability. The grade "50" refers to its minimum yield strength of 50 ksi (345 MPa). By incorporating small amounts of alloying elements like niobium (Nb) and vanadium (V), the steel achieves enhanced mechanical properties through specialized heat treatment, making it suitable for heavy-duty structural applications.

 

Manufacturing Capability in China: Wuyang Steel produces A572Gr50 plates with thicknesses ranging from 8–300 mm.

Material Varieties and Supply Conditions

A572Gr50 is available in various forms and processing states:

 

Product Type	Thickness/Diameter Range	Supply Condition
1. Plates and sheets	1–400 mm	Hot-rolled or cold-rolled
2. Round bars	4–500 mm	Hot-rolled or forged
3. Wire rods/wires	φ0.1–12.7 mm	Bright-drawn (coiled or straight)
4. Bar stock	Varies	Forged, hot-rolled, or cold-drawn
5. Forgings	Irregular shapes	Custom-forged to requirements
6. Strips	Width ≤ 650 mm, thickness 0.01–3.0 mm	Cold-rolled

 

 Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation A (%)	Test Temperature (℃)	Impact Energy KV2 (J)
A572Gr50	490–600	345–470	22–35	0	45–150

 

Notes:

 

Elongation values vary with thickness (thinner plates typically exhibit higher elongation).

Impact toughness testing at 0℃ ensures the steel's reliability in low-temperature environments.

 

 

 

 

 

 

 

 

 

Purchase Considerations

Thickness Tolerance: Strict control is required for thick plates (e.g., >50 mm) to meet structural safety standards.

Certification: Ensure compliance with ASTM standards and obtain third-party inspection reports (e.g., API, Lloyd's Register) for critical projects.

Price Factors: Costs vary by thickness, processing (e.g., normalized, quenched and tempered), and order volume. Current market prices in China range from CNY 3,500–6,500 per ton (subject to fluctuations).

 

 

 

 

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