Wholesale Customized 431 stainless steel plates: meet your various engineering and processing needs Factory, Factories

High-strength stainless steel plates suitable for a variety of industrial and architectural applications

Specifications: ASTM A240 / ASME SA240

Width: 1000mm, 1219mm, 1500mm

Thickness: 0.3 mm to 50 mm

Surface Finish: 2B, 2D, BA, NO.1, NO.4

Product Description

Overview

Stainless steel plates have a smooth surface, high plasticity, toughness and mechanical strength, and are resistant to corrosion by acids, alkaline gases, solutions and other media. It is an alloy steel that is not easy to rust, but it is not absolutely rust-free. Stainless steel plates refer to steel plates that are resistant to corrosion by weak media such as atmosphere, steam and water, while acid-resistant steel plates refer to steel plates that are resistant to corrosion by chemically corrosive media such as acids, alkalis and salts.

Stainless steel plates, sometimes called flat steel, are a material commonly used to make metal products. Steel plates are made into different thicknesses and widths, then cut and welded together to make the final product. There are many types of steel plates, such as stainless steel plates and high carbon plates. Some steel plates are used in construction, while others are used to make everyday items, such as wood stoves, and less everyday items, such as ship hulls.

Stainless Steel Plate 1
Stainless Steel Plate 2

Key Characteristics

High Strength and Hardness 431 stainless steel offers excellent strength and hardness, which can be further enhanced through heat treatment.
Good Corrosion Resistance Among the martensitic stainless steels, it offers the best corrosion resistance due to its increased chromium content and the addition of nickel.
Good Toughness It maintains excellent impact strength and good toughness at high hardness levels.
Heat Treatable Its mechanical properties can be adjusted through heat treatment to suit specific industrial requirements.
Stainless Steel Plate 3
Stainless Steel Plate 4

Technical Specifications

Specifications of 431 stainless steel sheet
Grade431
Width1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Length2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Thickness0.25 mm to 200 mm
TechnologyHot rolled plate (HR), Cold rolled sheet (CR)
Surface Finish2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, hair line, sand blast, Brush, SATIN etc.
FormCoils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, etc.
431 Plate Equivalent grades
Grade UNS WERKSTOFF NR. JIS BS
431 S43100 1.4057 SUS431 431S29
Chemical Composition
Grade C Mn Si P S Cr Ni
431 0.20 max 1.00 max 1.00 max 0.040 max 0.03 max 15.00 – 17.00 1.25 – 2.5
Mechanical Properties
Tensile Strength Yield Strength (0.2%Offset) Elongation
655-850Mpa 485Mpa 20 %
steel-plate-splicing-diagram

FAQ

What are the main advantages of 431 stainless steel plates?
431 stainless steel is a martensitic grade that provides high strength and hardness combined with the best corrosion resistance among all martensitic stainless steels, thanks to its chromium and nickel content.
Can 431 stainless steel be heat treated?
Yes, 431 stainless steel is heat treatable. Its mechanical properties, including hardness and tensile strength, can be significantly enhanced and adjusted through standard heat treatment processes.
Is this material suitable for marine environments?
While it has excellent corrosion resistance for a martensitic steel, it is often used for marine components like propeller shafts and fasteners because it resists corrosion from salt water better than other 400-series steels.
What surface finishes are available for these plates?
We offer a wide range of finishes including 2B, BA, No.1, No.4, No.8 Mirror, Hairline, Sandblasted, and Brushed finishes to meet different aesthetic and functional needs.
What are the typical applications for 431 plates?
Common applications include bolt and shaft components, laboratory equipment, marine systems, pump shafts, and structural parts in construction where high strength and corrosion resistance are required.
What is the thickness range available?
The plates are available in a broad range of thicknesses, typically starting from 0.25 mm up to 200 mm, covering both cold-rolled and hot-rolled options.
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