Hot rolled carbon and mild steel plates are widely used in various industries due to their good formability, weldability, and cost-effectiveness. Below is a detailed overview of their key characteristics, common grades, applications, processing considerations, and quality inspection points:

1. Key Characteristics

Production Process: Manufactured by rolling steel slabs at high temperatures (above the recrystallization temperature, typically 900-1200°C), resulting in a scaled surface and relatively rough finish (compared to cold-rolled products).

Mechanical Properties:

Mild steel plates (carbon content ≤ 0.25%) have low strength but high ductility (elongation ≥ 20%), making them easy to cut, bend, and weld.

Carbon steel plates (carbon content 0.25%-0.60%) offer higher strength but slightly reduced plasticity, suitable for load-bearing components.

Surface Features: The surface often has a dark, oxide scale layer (mill scale), which provides temporary corrosion resistance but may need removal before painting or coating.

Thickness Range: Generally available in 2mm to over 200mm, with widths up to 4000mm, catering to diverse industrial needs.

2. Common Grades and Standards

Grade	Standard	Key Applications	Notable Properties
A36	ASTM A36	Structural components (beams, bridges, frames)	Yield strength: 250 MPa; good weldability
Q235	GB/T 700	General structural use (machinery parts, plates)	Yield strength: 235 MPa; low carbon content
S235JR	EN 10025-2	Construction, automotive frames	Impact resistance at 20°C; excellent formability
1020	ASTM A1011	Pipes, brackets, general fabrication	Low carbon (0.20%); easy to machine

 

 

 

 

 

 

 

 

 

3. Typical Applications

Construction: Used in building structures, bridges, and steel frames due to their strength and cost-effectiveness.

Machinery Manufacturing: Fabrication of machine bases, brackets, and structural parts where high precision is not critical.

Automotive and Transportation: Truck beds, chassis components, and trailer frames.

Piping and Tubing: Manufacture of large-diameter pipes for water, gas, or oil transportation (thick plates for high-pressure applications).

General Fabrication: Metal enclosures, storage tanks, and non-critical structural parts.

 

 

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our Hot Rolled Carbon And Mild Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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