A572 Grade 42 50 55 60 65 Structural Steel Plate
ASTM A572 structural steel plate is a high-strength low-alloy steel used in building frames, bridges, and heavy equipment where strength-to-weight ratio matters. Jialu Metal stocks A572 Grades 42, 50, 55, 60, and 65 in thicknesses from 2 to 150 mm, widths from 600 to 3000 mm, and lengths of 6000 or 12000 mm, with custom sizes available. Buyers who would otherwise source different grades from separate mills can consol
- Grades 42 through 65 cover a range of yield strengths to match structural load requirements without over-specifying
- Stocked thicknesses from 2 mm to 150 mm allow for use in light framing to heavy-duty structural members
- Widths up to 3000 mm reduce the number of welds needed in large panels and beams
- Standard lengths of 6000 mm and 12000 mm align with common fabrication and shipping logistics
Mill certificates issued against the ordered grade and standard. Third-party inspection available on request.
What This Material Is For
ASTM A572 structural steel plate is a high-strength low-alloy steel used in building frames, bridges, and heavy equipment where strength-to-weight ratio matters. Jialu Metal stocks A572 Grades 42, 50, 55, 60, and 65 in thicknesses from 2 to 150 mm, widths from 600 to 3000 mm, and lengths of 6000 or 12000 mm, with custom sizes available. Buyers who would otherwise source different grades from separate mills can consolidate their structural plate needs on one contract, one inspection, and one shipment. This reduces coordination effort and avoids mismatched material across a single project scope.
Why Buyers Choose It
- Grades 42 through 65 cover a range of yield strengths to match structural load requirements without over-specifying
- Stocked thicknesses from 2 mm to 150 mm allow for use in light framing to heavy-duty structural members
- Widths up to 3000 mm reduce the number of welds needed in large panels and beams
- Standard lengths of 6000 mm and 12000 mm align with common fabrication and shipping logistics
- Custom sizes available to fit exact project dimensions, avoiding waste and rework
Where It Is Used
- Bridge girders and deck plates requiring A572 Grade 50 or 60 for high load capacity and fatigue resistance
- Industrial building frames using Grade 50 or 55 in columns and beams where weight savings matter
- Heavy machinery platforms and crane booms where Grade 60 or 65 provides strength in compact sections
- Marine structures and offshore platforms using A572 Grade 55 or 60 for corrosion-resistant weldability
- Earthmoving equipment frames and excavator booms where high strength and toughness are needed at ambient temperatures
Who It Is For
- Structural fabricators building bridges, buildings, and industrial facilities who need multiple grades in one order
- EPC contractors managing multi-grade steel scopes for a single project without splitting procurement
- Equipment manufacturers sourcing high-strength plate for heavy-duty frames and housings
- Fabrication shops that want to avoid material mismatch when assembling components from different mills
Problems It Solves
- Splitting one structural plate scope across multiple mills due to grade or size limitations
- Delays caused by waiting for different grades to arrive from different suppliers
- Mismatched material properties when one mill cannot supply a specific grade within the project window
- Increased welding and fabrication complexity from using multiple plate sources with inconsistent tolerances
- Higher inspection and documentation overhead when managing multiple suppliers and mill certificates
Technical Features
- High-strength low-alloy (HSLA) steel with improved yield strength over carbon steel at similar thicknesses
- Grades 42 to 65 offer increasing yield strength from 290 MPa to 448 MPa, with corresponding tensile strength
- Good weldability and formability across all grades, suitable for arc, MIG, and TIG welding processes
- Uniform mechanical properties across the plate thickness and surface, meeting ASTM A572 requirements
- Available in both hot-rolled and cold-rolled forms depending on tolerance and surface finish needs
Grades Standards And Size Range
Values below come from the published product data. Anything not listed is confirmed per enquiry.
| ASTM A572 Grades | Grade 42, 50, 55, 60, 65 |
|---|---|
| Thickness Range | 2 mm to 150 mm, or customized |
| Width Range | 600 mm to 3000 mm, or customized |
| Length Options | 6000 mm, 12000 mm, or customized |
| Standard | ASTM A572 |
| Chemical Composition | Carbon, manganese, silicon, phosphorus, sulfur, vanadium, niobium, titanium as per ASTM A572 |
| Surface Finish | Hot-rolled or cold-rolled, as required |
| Cutting and Edge Preparation | Sheared, flame-cut, or sawn edges available |
Materials
- High-strength low-alloy (HSLA) steel with controlled chemical composition for consistent mechanical properties
- Carbon content kept low to ensure good weldability and toughness at ambient temperatures
- Microalloying elements like vanadium, niobium and titanium used to enhance strength without reducing ductility
- Manganese and silicon added to improve strength and hardenability during rolling and cooling
Manufacturing Route
Quality Control
- Chemical composition verified using spectrometric analysis against ASTM A572 requirements
- Mechanical testing including tensile, yield, elongation and hardness performed on each heat
- In-house CNAS-certified laboratory conducts routine testing and holds traceable results
- Mill certificates issued per purchase order, including grade, standard, heat number, and test results
- Third-party inspection available on request, bookable at order stage to align with production schedule
Customisation Options
- Grade selected per project requirement, allowing multiple grades in one order
- Thickness, width and length customized to match exact fabrication needs
- Edge preparation (sheared, flame-cut, sawn) specified at order stage
- Packing and marking arranged per destination port and inspection regime
- OEM service accepted for branded packaging or labeling
How It Compares With The Alternatives
| Carbon steel plate (e.g., ASTM A36) | A572 offers higher yield strength at similar thickness, reducing material weight and cost in load-bearing applications |
|---|---|
| Higher alloy structural plates (e.g., A514) | A572 is more cost-effective for moderate-stress applications; A514 is reserved for extreme load or impact conditions |
| Cold-rolled structural plate | Hot-rolled A572 is more readily available in thick sections and wider widths; cold-rolled is used for tighter tolerances and smoother finish |
Buying Guide
- Start by identifying the required yield strength (Grade 42 to 65) based on structural load and design code
- Confirm whether the application requires high toughness or impact resistance at low temperatures
- Provide exact dimensions (thickness, width, length) in the enquiry to ensure availability
- Specify edge preparation and surface finish needs to avoid rework in fabrication
- Request mill certificates and third-party inspection at order stage to align with project compliance schedule
Questions About A572 Grade 42 50 55 60 65 Structural Steel Plate
What grades of A572 steel plate do you supply?
We supply ASTM A572 Grades 42, 50, 55, 60, and 65.
Can I order custom thickness, width, and length?
Yes. Thickness from 2 mm to 150 mm, width from 600 mm to 3000 mm, and lengths of 6000 mm or 12000 mm are standard; custom sizes are available.
Can one order include multiple grades?
Yes. Mixed-grade orders are common and supported, allowing one contract for multiple structural components.
What certifications do you hold?
We hold ISO 9001, API Q1, PED, CE, API 5L, API 5CT, API 5DP, and an in-house CNAS-certified laboratory.
Can third-party inspection be arranged?
Yes. Third-party inspection is available on request and is best booked at order stage.
What payment terms and currencies do you accept?
We accept L/C, T/T, PayPal, and credit card, in USD, CAD, AUD, SGD, EUR, or RMB.
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