ASME SA283 Gr A Dimensions

What is ASME SA283 Gr A Dimensions

In the essential field of structural and pressure vessel manufacturing, understanding the dimensions of materials like ASME SA283 Gr A is crucial for ensuring precise fabrication, compliance with standards, and optimal performance in low-stress applications.

At Gangsteel, as a leading producer and exporter from China, we specialize in supplying high-quality ASME SA283 Gr A carbon steel plates, a low-carbon material under the ASME SA283/SA283M standard (equivalent to ASTM A283 Grade A).

This grade is designed for welded structures where moderate strength and good formability are needed, such as in buildings, bridges, and storage tanks.

Gangsteel offers plates in various dimensions to meet global demands, with customization for specific project needs.

This guide focuses on ASME SA283 Gr A dimensions, including standard sizes, tolerances, and how they impact design.

For comparisons, explore our offerings in higher grades like SA283 Gr B or C, or related low-carbon steels.

ASME SA283 Gr A Dimensions

ASME SA283 Gr A dimensions refer to the available sizes, thicknesses, widths, and lengths of this low-carbon steel plate, which is normalized or as-rolled for general structural use.

The standard allows for flexibility in dimensions to suit various fabrication requirements, with thickness being the primary variable affecting mechanical properties.

At Gangsteel, we produce SA283 Gr A plates in thicknesses from 6mm to 50mm, as thicker plates may not maintain the material's low-strength profile.

Standard widths range from 1500mm to 3200mm, and lengths up to 12000mm or custom-cut to order.

Tolerances follow ASME SA20/SA20M for flatness, thickness variation (±0.3mm for 6-12mm thick), and camber, ensuring precision in welding and assembly.

For example, a typical plate might be 10mm thick x 2000mm wide x 6000mm long, ideal for tank shells or structural beams.

Custom dimensions are available, with edge trimming or beveling for seamless welding.

Compared to ASTM A 285 Grade A, SA283 Gr A offers similar dimensional ranges but is more focused on structural rather than pressure vessel use, allowing for larger sizes in non-critical applications.

Chemical Composition of ASME SA283 Gr A

The chemical composition of ASME SA283 Gr A supports its dimensional flexibility by maintaining low carbon for easy forming across various sizes.

In asme sa283 gr a boiler steel chemical composition details, manganese adds basic strength, while phosphorus and sulfur are controlled for ductility.

No alloys are required, keeping the material affordable for large-dimensional plates.

Composition table (heat analysis):

This simple mix aligns with equivalents like ASTM A 285 Grade equivalent material in S235JR, allowing consistent properties across dimensions.

Mechanical Properties of ASME SA283 Gr A

ASME SA283 Gr A provides low mechanical properties suitable for structural plates in various dimensions, with good elongation for bending large sizes.

Per sa283 gr a mechanical properties and density guide, it offers reliable tensile for non-pressure applications.

Properties table:

No impact testing required, but Gangsteel offers optional Charpy. Density is 7.85 g/cm³, standard for carbon steels.

Density and Delivery Condition

As per sa283 gr a mechanical properties and density guide, density is 7.85 g/cm³ (7850 kg/m³), aiding calculations for large-dimensional plates.

Plates are delivered as-rolled, with Gangsteel offering normalization for better flatness in wide sizes.

We perform ultrasonic testing to ensure quality across all dimensions.

Available Specifications and Models

Gangsteel supplies ASME SA283 Gr A in a wide range of dimensions to fit structural needs:

• Thickness: 6mm to 50mm (common for low-strength grade)
• Width: 1500mm to 3200mm
• Length: up to 12000mm or custom-cut
• Specifications: Compliant with ASME SA283/SA283M; models include flat plates, pre-cut shapes, and edge-prepared options for welding.

For custom tolerances or larger sizes, contact us. Compare with ASTM A 285 Grade B for pressure-focused dimensions.

Pricing Insights for ASME SA283 Gr A

As of October 03, 2025, current pricing for asme sa283 grade a structural plates ranges $450-900 per metric ton globally, with Indian prices at ₹65-100 per kg ($0.78-1.20/kg) due to local production.

Standard 20-30mm plates average $500-700/ton in Asia, $800-900 in Europe/NA.

In India, Mumbai suppliers quote ₹75-90 per kg for ex-stock, with customized sizes at ₹95-100 per kg plus 18% GST.

Gangsteel offers FOB quotes from $450/ton, landed in India ~₹65-85 per kg after duties.

Equivalent Materials for ASME SA283 Gr A

Equivalents provide affordable alternatives.

Key matches include EN 10025 S235JR (EU), DIN 17100 St37-2 (Germany), JIS G3101 SS400 (Japan), BS 4360 40A (UK), GB Q235B (China), KS D 3503 SS400 (Korea), AFNOR E24-2 (France), IS 2062 E250A (India), AS 3678 Grade 250 (Australia).

These offer similar low-strength traits, per astm a 283 grade equivalent material.

Table:

Applications and Advantages in Structural Systems

SA283 Gr A is used in bridges, buildings, and low-pressure tanks, offering easy welding and forming.

In India, it's popular for construction due to low cost.

Advantages include affordability and good ductility for mild conditions.

Frequently Asked Questions (FAQs) About ASME SA283 Gr A Dimensions

What are the standard dimensions of ASME SA283 Gr A?

Standard thicknesses 6-50mm, widths 1500-3200mm, lengths up to 12000mm; Gangsteel offers custom sizes with tolerances per SA20.

How does thickness affect SA283 Gr A properties?

Thicker plates (>30mm) may need normalization for uniformity, but properties remain consistent as it's low-strength.

What are the tolerances for SA283 Gr A dimensions?

Thickness ±0.3mm (6-12mm), flatness per SA20, camber <5mm per 5m length.

Can SA283 Gr A be supplied in custom dimensions?

Yes, Gangsteel provides cut-to-size, beveling, and edge preparation for welding.

What is the difference in dimensions between SA283 Gr A and Gr B?

Similar ranges, but Gr B's higher strength allows thinner plates for same load; both up to 50mm thick.

In summary, ASME SA283 Gr A dimensions from Gangsteel offer flexibility for structural projects, with reliable supply and customization. Contact us for quotes on your required sizes.

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