ASTM A572 Grade 50 Steel Plate
🔥 Stop burning critical project timeline buffers on structural plates that fail bend-test compliance or delay infrastructure engineering milestones due to unexpected weld-crack failures.
SXY Steel Group stocks premium, mill-certified ASTM A572 Grade 50 HSLA steel plates engineered with optimized columbium-vanadium micro-alloying for maximum weight reduction and exceptional atmospheric weldability. Take advantage of our Guaranteed 2-Hour Rapid Quote service to protect your infrastructure project bidding margin today.
Tired of slow email responses while your critical project bidding deadline is closing in? Avoid mill certificate rejections and expensive structural field rework today.
International Standards & Cross-Reference
📊 ASTM A572 Gr 50 HSLA Structural Plate Cross-Reference Matrix
| American Standard (ASTM) | European Standard (EN) | Japanese Standard (JIS) | Standard Thickness Available (mm) |
|---|---|---|---|
| ASTM A572 Grade 50 | EN 10025 S355JR | JIS G3106 SM490A | 6.0mm / 8.0mm / 10.0mm / 12.0mm |
| ASTM A572 Grade 50 | EN 10025 S355K2 | JIS G3106 SM490YB | 14.0mm / 16.0mm / 20.0mm / 25.0mm |
| ASTM A572 Grade 60/65 | EN 10025 S420NL | JIS G3128 SHK590 | 30.0mm – 120.0mm (Heavy Heavy Structural) |
🛠️ SXY Premium Value-Added Processing & Dimensional Tolerances
| Available Processing Service | Technical Implementation Limits | Guaranteed Mill Tolerances | Engineering Application Benefit |
|---|---|---|---|
| CNC Plasma & Laser Blanking | Custom structural gussets, bridge brackets, and dynamic profiles | ±0.8mm Precision Profile | Drastically lowers structural field trimming time and accelerates high-speed layout integration. |
| Heavy Hydraulic Flat Leveling | Multi-cylinder heavy plate flattening press lines | ≤ 1.5mm / meter deflection | Eliminates localized sheet warping errors during subsequent automated robotic laser cutting paths. |
| Surface Shot Blasting | High-velocity abrasive wheel descaling tunnels | ISO Sa 2.5 Cleanliness | Removes tough mill scale layers to yield optimal bonding surface for immediate architectural coatings. |
• Third-Party Approvals Welcomed: Unrestricted facility entry provided for verification inspections conducted by SGS, Bureau Veritas, or Lloyd’s Register.
• Capital Security Framework: SXY Steel Group fully processes and accepts 100% Irrevocable Letter of Credit (L/C) at sight mechanisms to eliminate all liquidity risks.
• Rigid Cargo Tie-Down Bracing: Heavy industrial timber dunnage blocks paired with high-tensile steel strapping prevent shifting inside ship compartments.
• Demurrage Cost Security Buffer: Extended 14 to 21 days free time pre-negotiated at destination ports to secure your import custom clearance windows.
| Standard | Steel Grade / Designation |
|---|---|
| ASTM / ASME (USA) | ASTM A572 Grade 50 / UNS K02303 |
| EN 10025 (Europe) | S355JR / S355JO / S355J2 |
| GB/T 1591 (China) | Q355B / Q355C / Q355D |
| JIS G3106 (Japan) | SM490A / SM490B |
Technical Specifications & Mechanical Properties
1. Chemical Composition (Heat Analysis, % Max)
Our advanced steelmaking ladle furnaces control residual trace elements strictly to optimize mechanical toughness and micro-alloying uniformity.
- C (Carbon): ≤ 0.23%
- Mn (Manganese): ≤ 1.35%
- Si (Silicon): 0.15% – 0.40%
- P (Phosphorus): ≤ 0.04%
- S (Sulfur): ≤ 0.05%
- V (Vanadium): 0.01% – 0.15%
- Nb/Cb (Columbium): 0.005% – 0.05%
2. Mechanical Properties (Guaranteed Values)
- Yield Strength : ≥ 50,000 psi (345 MPa)
- Tensile Strength : ≥ 65,000 psi (450 – 600 MPa)
- Elongation at Break : ≥ 18% – 21%
- Charpy V-Notch Impact Test : Available upon request for low-temperature structural operations.
Supply Range & In-House Processing Capabilities
We stock a comprehensive inventory of heavy steel plates and offer value-added precision processing services to deliver ready-to-weld components directly to your project site.
- Thickness Range: 6mm – 300mm (0.25″ – 12″)
- Width Range: 1500mm – 4000mm (60″ – 160″)
- Length Range: 3000mm – 18000mm (120″ – 700″) or Custom Tailored
- Surface Finish Options: Bare/As-Rolled, Shot Blasting & Primed (SA2.5), Anti-Corrosion Oiled, Hot-Dip Galvanized.
- Processing Services: CNC Plasma / Oxy-Fuel Flame Precision Cutting, Edge Beveling & Chamfering, Drilling, Bending, and Custom Pre-Fabrication according to your CAD drawings.
Heavy-Duty Industrial Applications
Due to its high structural efficiency and robust atmospheric endurance, ASTM A572 Grade 50 steel plate is the preferred choice for massive infrastructure and heavy machinery manufacturing:
- Infrastructure & Civil Engineering: Bridge girders, highway structures, high-rise building frameworks, and welded structural columns.
- Heavy Equipment Manufacturing: Boom sections of mobile cranes, excavator buckets, dumper bodies, truck chassis frames, and agricultural machinery components.
- Energy & Power Infrastructure: Electrical transmission towers, wind turbine structural components, and power substations.
- Marine & Storage Utilities: Heavy oil storage tanks, offshore platforms (non-critical joints), and port bulk handling facilities.
Rigorous Quality Control & Seaworthy Logistics
1. Inspection Protocols (100% Traceability)
- Issued with official EN 10204 3.1 Mill Test Certificate (MTC) documenting exact heat numbers, chemical chemistries, and mechanical parameters.
- Ultrasonic Testing (UT) compliant with ASTM A435 or ASTM A578 to ensure zero internal laminar defects.
- Full coordination with world-renowned third-party inspection agencies including SGS, Bureau Veritas (BV), TÜV, and Lloyd’s Register.
2. Export Packaging & Corrosion Protection
- Waterproof PVC wrapping combined with anti-corrosion VCI rust-preventative oil coating.
- Heavy-duty steel strapping with dedicated edge protectors to prevent edge bruising during crane handling.
- Bundled securely on seaworthy wooden or steel pallets, carefully lashed and blocked inside containers or bulk vessels to prevent transit shifting under rough sea conditions.
B2B Frequently Asked Questions (FAQ)
Q1: What is the main difference between ASTM A36 and ASTM A572 Grade 50?
A: The primary difference is the minimum yield strength. A572 Grade 50 features a higher yield strength (50,000 PSI / 345 MPa) compared to A36 (36,000 PSI / 250 MPa). This enables structural engineers to use thinner, lighter steel plates to bear the same structural load, saving material and transport costs.
Q2: Do your A572 Grade 50 plates come with an official MTC?
A: Yes, absolutely. Every single batch of structural steel plates we ship is accompanied by an original EN 10204 3.1 Mill Test Certificate. We never ship uncertified or mixed-heat steel.
Q3: Can you cut and bevel the steel plates according to our project structural blueprints?
A: Yes. We feature advanced in-house CNC flame and plasma cutting machinery. We can cut plates to your customized geometries, perform professional weld edge beveling, and drill holes according to your official CAD/PDF blueprints.
Get an Instant Quote Today
Don’t let fluctuating steel market prices impact your project budget. Contact our structural steel engineering team today to receive a comprehensive, obligation-free quotation, along with sample MTC certificates.
📧 Email Your RFQ to: [sales02@sxymetals.com]
📱 Instant WhatsApp/WeChat: [+8615318892759]
⏱️ We guarantee a professional technical response and full itemized quotation within 24 hours.
🔬 Secure Your Free Engineering Blueprint Nesting Analysis & Layout Optimization
Submit your current structural drawings or project Bill of Materials (BOM) below. The engineering team at SXY Steel Group will run a detailed automated CAD cutting simulation to maximize panel yields and slash raw fabrication spend.
