Cut-to-size structural plate and a separate A516 Grade 70 program
Structural plate and pressure-vessel plate follow separate material programs. A36/A283 selections use the published 4–60 mm and 60–115 mm thickness bands, with finished-piece dimensions specified for the order. A516 Grade 70 plate uses the inch-based range shown below.
| Product / dimension | Catalog scope | Order basis |
|---|---|---|
| Medium-thick structural plate | 4–60 mm thickness | Published A36/A283 catalog band |
| Thick structural plate | 60–115 mm thickness | Published A36/A283 catalog band |
| Structural plate width × length | Cut-to-size quotation | Available parent-plate size and cutting allowance returned for the selected grade and thickness |
| A516 Grade 70 thickness | 3/16–6 in. | Separate pressure-vessel plate catalog |
| A516 Grade 70 width | 48–120 in. | Same A516 Grade 70 program |
| A516 Grade 70 length | 96–480 in. | Same A516 Grade 70 program |
For A36/A283 cut blanks, the quotation returns the proposed parent-plate size, finished dimensions and preparation scope for each grade and thickness. A516 Grade 70 retains its separate width, length and delivery-condition requirements shown above.
A plate schedule needs three dimensions and a piece count. Thickness × width × length defines the delivered rectangle; a shaped blank also needs its drawing revision. Inch dimensions stay in inches on the order rather than being rounded into a different metric size.
Plate can be mill-rolled or produced from coil after the required processing and qualification. Coil-derived structural plate must meet the finished plate specification and applicable ASTM A6 requirements, including additional testing where required. A route restriction belongs on the accepted material line.
Find a dimension or acceptance requirement.
| Requirement | What is specified | Acceptance basis |
|---|---|---|
| Thickness | Nominal, minimum or another specified basis | Decimal value, unit and applicable thickness tolerance |
| Finished width | Plate width or final blank width | Specified dimension and permitted variation |
| Finished length | Finished plate or cut-piece length | Exact ordered length and permitted variation |
| Squareness | Relationship between adjacent edges | Drawing datum and accepted squareness criterion |
| Flatness | Delivered parent plate before further cutting | Product standard, measurement stage and required limit |
| Edge condition | Mill edge or requested cut edge | Burr, edge allowance and any specified edge preparation |
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Our structural catalog lists A36, A283 Grades C/D and A572 Grades 42/50. A588 Grades A/B/K are weathering-steel options with their own quoted dimensions. The exact specification, grade suffix, thickness and delivery condition identify the material; alternatives appear as separate offers.
| Grade | Reference thickness scope | Minimum yield (ksi) | Tensile strength (ksi) |
|---|---|---|---|
| ASTM A36 | 0.100–6.00 in. | 36 | 58–80 range |
| ASTM A572 Grade 50 | 0.100–4.00 in. | 50 | 65 minimum |
| ASTM A516 Grade 70 | Grade 70; condition per specification | 38 | 70–90 range |
| ASTM A588 Grade A | 0.188–2.00 in. | 50 | 70 minimum |
Thickness scopes above belong to the reference data. They do not expand our catalog ranges. Yield and tensile strength serve different design checks; the governing specification and delivered material records establish acceptance for the ordered plate.
Pressure-vessel plate follows its A516 specification and ASTM A20 general requirements. The purchase line identifies any required impact testing or supplementary inspection. The delivery condition must meet the governing specification for the ordered thickness and be stated on the material line. Any ASME SA516 dual certification or vessel-code requirements need explicit order acceptance.
Hot-rolled carbon plate has a mill-scale surface. Scale condition and surface defects are considered against the selected product specification and the intended exposed face. A bare plate order does not include a paint-ready preparation standard.
Blast cleaning or another requested preparation has its own cleanliness, surface-profile and coating requirements. The accepted preparation scope identifies the faces and edges to be treated. Primer or another coating is priced separately from the bare material.
A588 develops its protective patina under suitable atmospheric exposure and wet-dry cycling. Persistent moisture, trapped debris and salt exposure affect that protection. The project’s exposure and detailing determine whether weathering steel is appropriate or a coating system is required.
Finished rectangle width and length are measured from the specified edges. Direct fit-up uses the accepted dimensional and squareness limits, with a defined cut-edge condition. A clear datum keeps the delivered rectangle aligned with the assembly drawing.
A profile drawing defines the outline, hole positions and any weld bevel. Drawing revision, datum and final-versus-rough dimensions keep those features consistent. Cutting, drilling and beveling requests are reviewed and priced as separate preparation items.
A finished component and its starting plate blank have different dimensions. Machining allowance covers the material removed during facing and edge finishing; the blank also needs the thickness and condition required by the planned operation. The accepted preparation drawing governs the supplied piece.
Compare plate supply formats and cutting waste when deciding between starting blanks and prepared pieces.
Base plates and beam connection plates need the design grade and thickness, together with the hole pattern and edge distances on the fabrication drawing. Hole location is tied to a common datum so the prepared piece can align with the member or anchor layout.
A mounting plate’s contact face determines how equipment seats against its support. The part drawing defines the bearing area, surface finish and flatness required after machining. Acceptance at that finished stage addresses the actual contact, rather than the rough blank’s appearance.
A bent bracket or channel-shaped part needs a material suitable for the specified thickness, bend radius and direction. The bend drawing sets the inside radius and finished leg dimensions. Grade strength alone does not establish that a tight fold will form without cracking.
Thickness, finished width and length are evaluated against the ordered basis and tolerance. Delivered-plate flatness, squareness and edge checks use the specified stage and measurement method. A later machining operation has its own finished-part criteria.
Required grade, chemistry, mechanical results and delivery-condition records accompany the plate order. General requirements follow ASTM A6 for structural plate and ASTM A20 for pressure-vessel plate.
Ultrasonic inspection needs a method, coverage and acceptance level. Impact testing needs the required temperature, specimen orientation and acceptance criteria. These are named requirements on the order rather than a blanket test claim for all plate.
Plate and cut-piece marks carry the agreed material identifiers and part numbers. Document cross-references and piece groups remain on the packing list for receiving.
Our quotations state whether the price uses actual weighed steel or an agreed theoretical weight. Estimated schedule weight is calculated from dimensions, piece count and the selected density; it is not automatically the invoiced tonnage. Packing weight is separate from net steel.
Plate material, cutting, surface preparation, packing and freight are itemized. The quote includes lot quantities and delivery terms for the actual grade-size mix.
Wide and heavy plates need supported stacks, suitable securing and protected contact points. Required stack dimensions and weights follow the transport plan and unloading limits. Grouping by size and material keeps piece counts clear against the packing schedule.
Cutting can release residual stress, and thermal cutting also introduces heat. A parent plate that meets its delivered flatness requirement can move after it is divided. A required flatness limit for the finished cut blank is a separate acceptance criterion at that later stage.
Yes. A mixed schedule lists each grade, thickness, width, length and quantity separately. The quote identifies the accepted lines, minimum lots and packing groups. Separate schedule lines keep a small blank quantity from being mistaken for a full-plate quantity.
Part numbers and required material cross-references can be specified in the marking request. The accepted marking method and locations determine how each prepared piece is identified. A drawing number alone does not define the heat-number or material-report link after cutting.
A substitution needs approval against the part’s complete material requirement. Yield strength is only one factor; chemistry, toughness, delivery condition, welding and forming requirements can differ. We identify a proposed alternate as a separate material offer rather than changing the specified grade silently.
Yes. The blank drawing identifies the delivered dimensions and machining allowance separately from the finished part. Cutting and any accepted preparation are quoted against that drawing and its material requirement.
Send your plate schedule or drawings and destination. Our quote covers the exact grade, delivery condition, finished dimensions and quantities, with processing, inspection documents and weight basis itemized.