Hot-Rolled Flat Bars (EN 10025 S275JR) – Cost-Effective for Welding & Bending
Definition of Flat Steel
Flat steel is a type of steel product featuring a rectangular cross - section with slightly rounded edges. It is produced through processes such as hot rolling, cold rolling, or cold drawing. With defined width and thickness, its shape endows it with high versatility, making it a staple in a wide array of industries.
Materials and Standards
|
Material Type |
Characteristics |
Standards |
|
Carbon Steel |
Offers good strength and plasticity within a certain carbon content range. Cost - effective, suitable for general structures and mechanical parts. [Insert a picture of carbon steel flat steel here, labeled "Carbon Steel Flat Steel"] |
In the United States, ASTM A36 is a common standard for carbon steel flat bars, which specifies mechanical properties like yield strength (min. 36 ksi) and tensile strength (58 - 80 ksi). In Europe, EN 10025 - 2:2004 covers non - alloy structural steels, with grades such as S235JR having specific chemical composition and mechanical property requirements. |
|
Low Alloy Steel |
Enhanced strength, toughness, and corrosion resistance compared to carbon steel due to the addition of a small amount of alloying elements. Ideal for applications with elevated performance demands. [Insert a picture of low alloy steel flat steel here, labeled "Low Alloy Steel Flat Steel"] |
ASTM A572 in the US is a well - known standard for low - alloy high - strength columbium - vanadium structural steel. Grades like A572 Grade 50 have a minimum yield strength of 50 ksi. In the international context, ISO 4950 - 1:2018 defines technical delivery conditions for hot - rolled flat products of high - yield - strength steels for cold forming, applicable to low alloy steels used in various industries. |
|
Stainless Steel |
Exhibits outstanding corrosion resistance, maintaining performance in humid, acidic, and alkaline environments. Widely used in food, medical, and decoration sectors. [Insert a picture of stainless steel flat steel here, labeled "Stainless Steel Flat Steel"] |
ASTM A240 is a major standard for stainless steel in the US. For example, 304 stainless steel (type 304 in ASTM A240) has a minimum chromium content of 18% and nickel content of 8%, ensuring excellent corrosion resistance. In Europe, EN 10088 - 2:2005 deals with stainless steels, specifying properties for different grades used in various applications. |
Main Size Specifications
|
Item |
Common Specification Range |
|
Width |
10mm - 300mm |
|
Thickness |
3mm - 60mm |
|
Length |
Standard lengths include 6000mm, 12000mm, etc. Custom lengths are available upon customer request. |
| Dimension | Ranging from 1/2 inch to 36 inches and above. |
| Length: | Random lengths (R/L) or single random lengths (SRL), typically ranging from 18 to 24 feet. |
| Application | Oil/gas pipe ,aerospace use,machine parts ,furnace ,geological exploration,acid resistance ,bearing |
Application
Flat steel bars are used across industries due to their versatility:
Surface Treatment, Packaging and Transportation
Surface treatment: including bare material (Bare), galvanized (Galvanized), painted (Painted), etc. Galvanizing can significantly improve corrosion resistance.
Packing method: usually bundled into rolls or loaded into containers (20/40 feet), suitable for sea or land transportation needs.
fAQ
Q1: What’s the difference between hot-rolled and cold-rolled flat bars?
A: Hot-rolled bars are cheaper with a rough surface; cold-rolled bars have tighter tolerances and a smooth finish.
Q2: Can flat bars be welded or machined?
A: Yes! Carbon/alloy steels are weldable; stainless grades may need specialized techniques.
Q3: How do I choose the right material?
Q4: Do you offer custom sizes?
A: Yes – thickness, width, and length can be tailored.
5.Do you offer surface treatment options for flat steel?
Yes, we do. We provide several surface treatment options for flat steel, including galvanization to enhance corrosion resistance, painting for decorative and protective purposes, and polishing to achieve a smooth and shiny finish, especially for stainless steel flat steel used in decorative applications.