In modern manufacturing and construction industries, the selection of the right type of steel is crucial to project performance, durability, and cost-efficiency. Among the most widely used and trusted steel grades is A36, as designated under ASTM standards. Known for its excellent weldability, strength, and formability, A36 strip steel is a popular material in fabrication, infrastructure, and component manufacturing.
This article provides a comprehensive look at A36 ASTM strip steel—specifically in the dimensions of 1260mm width and 2.75mm to 3.5mm thickness—highlighting its technical properties, key applications, advantages, and sourcing tips for industrial buyers.
Understanding A36 ASTM Steel: An Overview
ASTM A36 is a standard specification developed by the American Society for Testing and Materials (ASTM). It covers carbon structural steel intended for use in welded, bolted, or riveted construction. A36 steel is one of the most commonly used mild carbon steels and is known for its high strength-to-weight ratio, excellent machinability, and superior weldability.
The typical chemical composition of A36 steel includes:
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Carbon (C): ≤ 0.26%
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Manganese (Mn): 0.6–0.9%
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Phosphorus (P): ≤ 0.04%
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Sulfur (S): ≤ 0.05%
With a minimum yield strength of 250 MPa (36,000 psi) and good elongation properties, A36 balances structural integrity and fabrication flexibility, making it a go-to choice for multiple sectors.
What Is Strip Steel?
Strip steel is a flat steel product that is narrower than sheet steel and comes in long continuous coils or cut lengths. It is generally used in forming processes such as stamping, roll forming, or bending to create parts, panels, or structural elements.
With the 1260mm width and thickness ranging from 2.75mm to 3.5mm, A36 strip steel offers the perfect balance between rigidity and workability. These dimensions are ideal for applications that require moderate strength and dimensional stability without the excessive weight of thicker steel plates.
Key Advantages of A36 Strip Steel (1260mm Width, 2.75mm–3.5mm Thickness)
1. Versatile Thickness Range
The specified thickness range of 2.75mm to 3.5mm provides flexibility across different load-bearing and fabrication needs. Thinner gauges allow for easy bending and forming, while thicker sections offer more structural support.
2. Wide Format for Large-Scale Applications
At 1260mm width, this A36 strip steel can be efficiently used in wide-format stamping, rolling, or shearing operations—reducing waste and optimizing cutting layouts for large parts.
3. Excellent Weldability and Machinability
A36 is renowned for its ease of welding using all conventional techniques, such as MIG, TIG, and stick welding. Its machinability allows for drilling, milling, punching, and cutting without tool degradation or dimensional distortion.
4. Cost-Effective Material
Compared to higher-strength alloys, A36 steel remains one of the most affordable mild steels, offering excellent value for non-critical applications that still require structural integrity.
5. Good Surface Finish
Strip steel often goes through surface treatments and edge finishing, making it suitable for parts that require coating, painting, or galvanization.
Common Applications of A36 Strip Steel
Given its adaptability, A36 strip steel in this configuration is widely used in:
• Structural Components
Frames, braces, gussets, and base plates for buildings, bridges, and modular structures benefit from A36’s strength and consistency.
• Automotive and Transportation
Used in the fabrication of support brackets, floor panels, and mounting structures due to its formability and weight balance.
• Machinery and Equipment
Ideal for creating machine covers, structural panels, and guard frames in agricultural and industrial equipment.
• Fabricated Products
Steel furniture, racks, shelving, and enclosures often use A36 strip steel for clean bending and welding characteristics.
• Shipbuilding and Containers
While not for marine-grade corrosion resistance, A36 is still used in dry shipping containers, transport modules, and port-side fabrications.
Technical Properties Snapshot
| Property | Value |
|---|---|
| Yield Strength | ≥ 250 MPa (36,000 psi) |
| Tensile Strength | 400–550 MPa (58,000–80,000 psi) |
| Elongation (in 200mm) | ≥ 20% |
| Thickness Range | 2.75mm–3.5mm |
| Width | 1260mm |
| Welding Capability | Excellent |
| Machining Capability | Good |
| Surface Finish | Smooth (may be oiled or dry) |
Custom Processing and Supply Options
A36 strip steel can be delivered in:
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Coils for automated roll forming or stamping lines
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Cut-to-length sheets for flat stock inventory
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Edge-conditioned strips for safety or specialized use
Buyers can also request surface treatments (oiled, pickled, galvanized) depending on final usage requirements. Suppliers like Midwest Steel, Shandong Iron & Steel, and Baosteel provide flexible delivery options for industrial-grade strip steel with international shipping support.
Tips for Industrial Buyers
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Verify Material Certifications: Always request Mill Test Certificates (MTC) for ASTM compliance.
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Order in Bulk: For high-volume needs, bulk orders reduce cost per ton and ensure consistent inventory.
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Discuss Custom Specs: Some suppliers offer tolerance control, slit edging, or protective coatings.
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Check Freight & Lead Time: Strip steel is heavy; ensure reliable freight and warehouse coordination.
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Request Samples or Trial Runs: Test formability and surface finish on your machines before full-scale procurement.
Why Midwest Steel Is a Trusted Supplier
For buyers in the U.S. and globally, Midwest Steel is a leading distributor of A36 strip steel. Known for competitive pricing, wide inventory, and reliable delivery, Midwest Steel offers:
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Cut-to-size strip steel
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Fast shipping and nationwide logistics
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Bulk pricing for 2.75mm–3.5mm thick A36 strips
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Consistent ASTM quality and technical support
Visit Midwest Steel Supply to explore their offerings or request a custom quote for your A36 strip steel needs.
Final Thoughts
A36 ASTM strip steel (1260mm wide, 2.75mm to 3.5mm thick) is a highly versatile and cost-effective material for structural and fabrication use. Whether you’re building frames, components, or large-format parts, this mild carbon steel delivers strength, workability, and reliability at scale.
By partnering with reputable suppliers like Midwest Steel, you not only get access to high-quality materials but also ensure smooth project execution, lower costs, and long-term durability. Don’t compromise—choose A36 strip steel and work with suppliers who understand industrial standards and performance.
Let your next project begin with a foundation of quality steel—engineered for results.
