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Nial Sheets and Plates, based in Houston, USA, stands out as a trusted manufacturer and supplier of top-notch Alloy Steel Circles. These circles are specifically designed for high-strength, high-temperature, and wear-resistant applications. Crafted from various alloy steel grades, including Cr-Mo and Ni-Cr-Mo types, they cater to a wide range of industrial needs. Nial takes pride in delivering precise dimensions, a flawless surface finish, and strict compliance with ASTM and international standards. Renowned for their durability and exceptional mechanical properties, Nial’s alloy steel circles find their place in heavy engineering, petrochemical, power generation, and machining sectors, especially in components that face tough conditions.
Alloy Steel Circles are created from a blend of carbon steel and alloying elements such as chromium (0.5–2.0%), molybdenum (0.2–1.0%), nickel, and manganese, depending on the specific grade. These elements work together to boost strength, toughness, heat resistance, and corrosion resistance. Typically, their mechanical properties include tensile strength ranging from 550–850 MPa, yield strength of 300–600 MPa, along with good elongation and impact resistance. This unique alloy composition allows the circles to perform exceptionally well under high temperatures and stress, making them perfect for pressure-containing and structural applications in demanding environments.
Standard : ASTM A387 / ASME SA387
Thickness : 5mm-150mm
Dimensions: ASTM, ASME and API
Size: 1 MM TO 200 MM THK IN 1000 MM TO 3000 MM WIDTH x 2500 MM / 5000 MM / 10000 MM / COIL
Type: Hot Rolled Circles, Cold Rolled Circle, Proof Machined Circles.
| Element | Symbol | Percentage (%) |
|---|---|---|
| Carbon | C | 0.12 – 0.20 |
| Chromium | Cr | 0.80 – 1.50 |
| Manganese | Mn | 0.30 – 0.60 |
| Silicon | Si | 0.15 – 0.30 |
| Nickel | Ni | 0.50 – 1.00 |
| Molybdenum | Mo | 0.20 – 0.30 |
| Vanadium | V | 0.02 – 0.05 |
| Property | Unit | Value |
|---|---|---|
| Tensile Strength | MPa | 550 – 850 |
| Yield Strength | MPa | 250 – 450 |
| Elongation | % | 15 – 25 |
| Hardness | HB (Brinell) | 150 – 250 |
| Impact Toughness | J | 50 – 100 |
| Fatigue Strength | MPa | 400 – 600 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Nial Sheets and Plates based in Houston, USA, is a leading supplier and stockist of high-quality metal products, including Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all offered with exceptional service and tailored to meet our customers specific requirements. With a focus on delivering superior products, we cater to a wide range of industries, providing reliable solutions for diverse applications. Our extensive inventory includes Known for our unique finishing techniques and commitment to quality. We are dedicated to ensuring customer satisfaction through dependable service and top-notch products.
Alloy Steel Circles offer numerous advantages, making them highly sought after in various industries. They provide exceptional strength and durability, enabling them to withstand heavy loads and harsh conditions. Their excellent corrosion resistance ensures longevity, even in challenging environments. The enhanced hardness and wear resistance make them ideal for high-stress applications, reducing maintenance costs. Alloy steel circles are highly versatile, adapting well to heat treatments for customized mechanical properties. Additionally, they are lightweight relative to their strength, ensuring efficiency in structural and machinery applications while maintaining superior performance.
Yes, we offer custom sizes for Alloy Steel Circle to meet specific project needs. Our team at Nial Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@aaronsheetsplates.com.
| Standard | Grade | Equivalent Grade |
|---|---|---|
| ASTM | A335 P11 | 1.7335 |
| EN | 16Mo3 | A335 P1 |
| DIN | 1.7380 | A335 P22 |
| JIS | STBA22 | A335 P12 |
| BS | 3604 Gr 620-460 | EN 10216-2 |
| IS | 1239-2 | BS 3601 |
Across various industries where strength, durability, and thermal resistance are crucial, Alloy Steel Circles play a vital role. In the power generation sector, they are utilized in turbine parts, heat exchangers, and boiler components. The oil and gas industry relies on them for flanges, valves, and pressure vessel components. Additionally, they are essential in heavy machinery, forging, automotive parts, gears, shafts, and construction equipment. Their excellent machinability, weldability, and wear resistance make alloy steel circles ideal for components that need to withstand mechanical loads, cyclic stress, or high temperatures in critical operations.
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Houston, TX 77041
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