Product reference photographs. Confirm grade, finish and supply specification with your enquiry.
Hot rolled plate & coil
Weathering structural steel plate
Weathering structural steel plate for architectural fabrication and structural applications with atmospheric-corrosion requirements. Select the grade, dimensions, finish and inspection requirements for your order.
- Product form
- Plate
- Surface / finish
- Weathering steel
- Grade / standard
- ASTM A588 Grades A / B / C / K
Product details
Weathering structural steel plate for architectural fabrication and structural applications with atmospheric-corrosion requirements. Select the grade, dimensions, finish and inspection requirements for your order.
Grade selection
Select the exact grade and purchasing standard from the tables below.
Delivery condition
Specify surface finish, heat treatment and dimensional tolerances.
Inspection & supply
Agree test documentation, packing and shipment requirements.
Typical application
Architectural fabrication and structural applications with atmospheric-corrosion requirements.
Architectural fabrication and structural applications with atmospheric-corrosion requirements.
Explore applicationsProduct specifications
| Product form | Plate |
|---|---|
| Grade / standard | ASTM A588 Grades A / B / C / K |
| Width | 100–3,000 mm reference supply range |
| Manufacturing process | Hot rolled; final heat treatment according to the selected grade |
| Cut length | 1–12 m or cut to order |
| Delivery condition | As rolled, normalized or quenched and tempered only as permitted by the selected grade |
| Thickness | To the selected grade and plate specification |
| Dimensional tolerances | To the ordered product standard and agreed drawing |
| Inspection | Material identification, dimensions, surface and specified test report |
| Packaging | Protective wrapping, edge protection and steel strapping as agreed |
Ranges vary with grade, finish and order specification. Confirm the required dimensions, coating and availability in your quotation.
Grade-specific technical data
Select a grade to view its composition, mechanical properties and applicable test conditions.
ASTM A588
Chemical composition (% by mass)
| A588 | C | Mn | P | S | Ni | Si | Cr |
|---|---|---|---|---|---|---|---|
| GradeA | ≤ 0.19 | 0.80~1.25 | ≤ 0.04 | ≤ 0.05 | ≤ 0.40 | 0.30-0.65 | 0.40-0.65 |
| GradeB | ≤ 0.20 | 0.75~1.35 | ≤ 0.04 | ≤ 0.05 | ≤ 0.50 | 0.15-0.50 | 0.40-0.70 |
| GradeC | ≤ 0.15 | 0.80~1.35 | ≤ 0.04 | ≤ 0.05 | 0.25-0.50 | 0.15-0.40 | 0.30-0.50 |
| GradeK | ≤ 0.17 | 0.50~1.20 | ≤ 0.04 | ≤ 0.05 | ≤ 0.40 | 0.25-0.50 | 0.40-0.70 |
Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification. This source table lists selected elements only; copper and other grade requirements must also be specified.
Mechanical properties
| A588 | Tensile Strength | Yield Strength | Elongation 200mm% | Elongation 50 mm (%) |
|---|---|---|---|---|
| Thickness≤100mm | 485 | 345 | 18 | 21 |
| Thickness>100-125mm | 460 | 315 | - | 21 |
| Thickness>125-200mm | 435 | 290 | - | 21 |
Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.
Physical properties
| Physical Performance | Metric | Imperial |
|---|---|---|
| Density | 7.75g/cc | 0.280 lb/in³ |
Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.
Surface & processing requirements
Include the downstream process in your enquiry so that the material, dimensions and surface can be reviewed together.
| Cut-to-size requirements | Final length and width, cutting method and edge condition. |
|---|---|
| Forming / fabrication | Describe the downstream forming, pressing, profiling or fabrication operation. |
| Finishing requirements | State whether material will be painted, coated or otherwise finished after delivery. |
| Plate / sheet handling | Confirm lifting method, stack height and protection of edges and surfaces. |
Production & processing
Define the material and the downstream process together. Cutting, slitting or finishing requirements should form part of the order specification.
Material review
Grade, dimensions and surface requirements are checked against the enquiry.
Processing scope
Agree cutting, slitting or forming requirements and the finished product tolerances.
Order inspection
Define acceptance criteria, identification and the requested documentation.
Stock & warehouse
Hot rolled, galvanized and color coated material in warehouse settings. Ask our team to confirm current availability for your grade, dimensions and quantity.
Quality inspection & documentation
Agree the acceptance criteria and required documents before confirming your order.
- Material identificationGrade, standard and requested test documentation.
- Dimensions & surfaceThickness, width, finish and agreed tolerances.
- Order documentsProduct identification, packing list and inspection scope.
Packaging & shipment
Tell us how the material will be transported, unloaded and stored. Specify moisture protection, edge protection, package weight and destination with your enquiry.
| Protection | Moisture barrier, edge protection and surface protection as agreed. |
|---|---|
| Unit weight | Specify the coil or bundle weight for your unloading equipment. |
| Identification | Product, grade, dimensions and order reference on the agreed packing list. |
| Delivery | Confirm destination, transport method and delivery terms in the quotation. |
Certificates & verification documents
Request the original document issued for the supplying company, product scope and order. Material test reports and conformity documents are checked against the named holder, issuing body and validity period.
| Material test report | Heat or coil number, ordered grade, chemical composition and mechanical test results. |
|---|---|
| Inspection document | Specify the required EN 10204 document type and inspection scope in the enquiry. |
| Conformity documents | Request an original copy showing the issuing body, holder, number, applicable scope and validity. |
Frequently asked questions
What should I include in my enquiry?
Send the product, grade or standard, dimensions, quantity, required finish and destination. Describe the end use if the specification is still being developed.
Can I request a particular size or finish?
Yes, include your required size and finish in the enquiry. Availability and any processing requirements must be confirmed in the quotation.
How are minimum order and lead time confirmed?
They depend on grade, dimensions, processing and quantity. We confirm them for the particular order rather than publish one figure for every product.
What documents should I request?
State the material test document, inspection scope and other purchasing documents required for your project. Agree these with the order.
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