Home >Alloy Steel > Alloy Steel Gr 11 Sheets and Plates
Standard : ASTM A387 / ASME SA387
Thickness : 5mm-150mm
Width : 1000mm-4500mm
Length : 3000mm-18000mm
Surface Condition : Normalized Rolling, As Rolled, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or according to the customer’s specifications.
Application : Pressure Vessel Plate, Steel Boiler Plate
Form :Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank, Circle, Ring (Flange) etc.
| C | Mn | P | S | Si | Cr | Mo |
| 0.04 – 0.17 | 0.35 – 0.73 | 0.035 | 0.035 | 0.44 – 0.86 | 0.94 – 1.56 | 0.40 – 0.7 |
| A387 / SA387 Grade 11 | Class 1 | Class 2 |
| Tensile Strength (ksi) | 60-85 | 75-90 |
| Tensile Strength (MPa) | 415-585 | 485-620 |
| Yield Strength (ksi) | 35 | 45 |
| Yield Strength (MPa) | 240 | 310 |
| Elongation in 200mm (%) | 19 | 18 |
| Elongation in 50mm (%) | 22 | 22 |
| Reduction of area in % | – | – |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering innovative solutions for every one of your piping requirements. With advanced production facilities strategically situated in the New Zealand, we hold an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your needs.
We provide these Alloy Steel Gr 11 Sheet and Plates as per DIN, ISO, JIS or ANSI Standard.
High Strength: Alloy steel Grade 11 sheets and plates offer high strength, which makes them a good fit for uses that demand strength and durability, including construction, automotive and industrial machinery.
Low cost: Despite their premium quality, they tend to be economical when set against high-performance materials like alloy steel and grade 11 sheet plates. This budget-friendly pricing makes them appealing for uses that call for a trade-off between performance and cost.
Weldability: They show outstanding weldability, easing the fabrication and assembly of a range of structures and components. This makes them well suited to welding and joining operations that leave the product’s integrity intact.
Heat Resistance: Alloy steel grade 11 sheets and plates are built to endure high temperatures without giving up their mechanical properties. This heat resistance makes them fitting for high-temperature uses like boilers, heat exchangers and pressure vessels.
Corrosion resistance: These sheets and plates deliver superior corrosion resistance, particularly in settings where water, chemicals, or other corrosive substances are prevalent, which makes them ideal for marine, medical, and offshore applications.
Alloy Steel Gr 11 Sheet and Plates are extensively utilized in industry across a range of sectors thanks to their distinctive blend of superior corrosion resistance, high strength, and adaptability. Typical industrial applications include use within the oil and gas sector for offshore platforms, pipelines, and subsea equipment, where both corrosion resistance and strength are critical for enduring severe conditions.
Pressure Vessels: Grade 11 alloy steel sheets and plates find extensive use in producing pressure vessels for the oil and gas, petrochemical and chemical process industries etc. Because of their strong tensile strength and resistance to corrosion, they work well for hot applications operating under high pressure.
Power plants: Alloy steel grade 11 sheets and plates serve in producing critical components of power generation plants such as turbine blades, steam pipes, boiler tubes etc. Thanks to their outstanding mechanical properties along with resistance to corrosion and oxidation, they guarantee power plant reliability and long-lasting accessories.
Heat exchangers: Grade 11 alloy steel sheets and plates are applied in heat exchangers that call for effective heat transfer. Because of their strong thermal resistance and thermal conductivity, they are perfect for moving heat between liquids across many industrial applications.
Boilers: These materials frequently go into tubes, headers, shells and additional boiler components owing to their excellent temperature handling and resistance to high temperatures and pressures that lead to corrosion or damage
Define your requirements: Identify the particular applications and operating conditions under which the alloy steel sheets and plates will serve. Take into account variables like temperature, pressure, corrosion resistance, and mechanical demands for the intended use.
Size and Design: According to your project specifications, work out the required thickness and dimensions of the sheet and plate. Confirm that the supplier is able to supply the necessary sizes or offer custom cutting services.
Corrosion Resistance: Take the corrosion resistance of alloy steel into account. Grade 11 steel typically offers better resistance to high-temperature corrosion and oxidation, but you should verify whether it satisfies the particular corrosion demands of your application.
Mechanical properties: Assess the workability of the steel alloys, covering tensile strength, yield strength, elongation, and hardness. Select the grade that delivers the appropriate technical characteristics for your application.
Materials: Consult the Industry Standards and Specifications for Alloy Steel Grade 11. Make sure the materials satisfy the necessary standards like ASTM A387 Grade 11 Class 1 or Class 2 for plate and sheet materials.
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