Excerpt:
For equipment housings, corrosion-resistant components, welded fabrications and architectural metalwork. The low carbon content of 304L reduces sensitization risk in weld heat-affected zones, subject to fabrication and service conditions.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
304L Stainless Steel Plate
For equipment housings, corrosion-resistant components, welded fabrications and architectural metalwork. The low carbon content of 304L reduces sensitization risk in weld heat-affected zones, subject to fabrication and service conditions.
| Procurement Item | Details |
|---|---|
| Applicable Standard | ASTM A240 / UNS S30403 (plate) |
| Product Category | Steel Plates & Coils / Plate |
| Dimensions & Quantity | The sizes below are enquiry references. Available combinations, quantities and delivery times are subject to written quotation. |
| Documentation | Specify heat/batch inspection documents, standard edition, traceability and project certification in your enquiry. Documents are subject to confirmation of actual availability. |
01 / Product Features & Selection
- Grade, product form and standard are identified separately to avoid interchanging plate and pipe chemistry tables.
- Confirm thickness, finish code, protective film direction and visible faces before cutting and assembly.
- Assess chlorides, cleaning practices and temperature when selecting for corrosion resistance. Molybdenum-bearing grades may warrant evaluation in coastal or chloride service.
02 / Specifications, Dimensions & Ordering Options
These dimensions help define your purchase requirement; they do not imply that every combination is in stock. Specify tolerances, quantity, delivery condition and destination port. Submit drawings for special sizes.
| Parameter | Specification / Enquiry Range | Points to Confirm |
|---|---|---|
| Sheet Thickness / mm | 0.5, 0.6, 0.8, 1.0, 1.2, 1.5, 2.0, 2.5, 3.0 | Confirm rolling condition and tolerances separately for sheet and plate. |
| Plate Thickness / mm | 4, 5, 6, 8, 10, 12, 16, 20, 25, 30, 40, 50 | Special thicknesses and flatness require availability confirmation. |
| Width × Length / mm | 1000×2000, 1219×2438, 1250×2500, 1500×3000, 1500×6000, 2000×6000 | Specify net dimensions for full plates and cut parts. |
| Surface Finish | 2B, No.1, brushed or polished requirements | Confirm parent finish, abrasive grit, direction and approval sample. |
| Dimensions / General Requirements | ASTM A480/A480M; finished products follow their specific product standard. | Specify thickness tolerance, flatness, edge condition and protective film. |
| Processing Options | Submit cut-to-length, cutting, bending and protective film requirements. | Provide drawings for bend radius, weld positions and visual acceptance. |
03 / Standard Chemical Composition
ASTM A240 / UNS S30403 (plate). Values are mass percentages (%). Maximum limits are shown by ≤, minimum limits by ≥; ranges are specification limits and Fe is the balance. These are not measured results for a current delivery heat.
| Element / Indicator | Requirement or Range |
|---|---|
| C | ≤0.030 |
| Si | ≤0.75 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 17.5–19.5 |
| Ni | 8.0–12.0 |
| N | ≤0.10 |
| Fe | Balance |
Uses ATI public A240 plate chemistry. Cr, Ni, Si and C limits may differ by historical edition or pipe standard. Specify the standard edition; these plate values do not replace TP304L pipe requirements.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| Annealed plate, room temperature | Rp0.2 ≥170 | ≥485 | ≥40 |
Strength in MPa, elongation in %. Reference hardness ≤92 HRB. Accept formed, cold-worked or heat-treated finished products against their actual delivery condition.
05 / Inspection, Processing & Quality Checks
- Verify UNS S30403, A240 edition and annealed condition. Check each requirement where dual certification is requested.
- PMI supports material screening, but handheld XRF generally cannot verify low carbon content. Use a suitable carbon analysis method or heat/batch test report.
- Inspect scratches, dents, finish direction and film adhesive residue. Avoid contamination from carbon-steel tools and swarf.
- Agree post-weld cleaning, pickling / passivation and testing for the application. A bright appearance does not establish corrosion performance.
06 / Export Packaging for This Product
| Stage | Recommended Arrangement | Key Considerations |
|---|---|---|
| Surface Protection | Apply temporary rust-preventive oil to carbon steel as agreed. Stainless steel may use protective film and interleaving where required. | Rust preventive must be compatible with subsequent painting and welding. |
| Stacking & Edge Protection | Stack matching sizes evenly on level supports; use protection between corners and steel straps. | Prevent localized dents and exposed-edge damage. |
| Handling & Loading | Select bases and strapping according to package weight, centre of gravity and forklift / lifting equipment. | Check container payload and floor point loads; available volume alone does not determine a safe load. |
Before shipment, cross-check product, grade, heat number, size, piece count, net weight and gross weight against the packing list. Match labels to inspection documents. For solid-wood pallets, dunnage or crates, check destination-country rules; wood subject to ISPM 15 must be treated and marked by an approved provider. Load dry cargo and arrange supports, blocking and securing according to weight and centre of gravity.
07 / How Qida Supports Your Procurement
| Procurement Stage | Qida Coordination | Information for the Buyer |
|---|---|---|
| Requirement Review | Review application, standards, material condition, drawings and acceptance items. | A checkable specification list helps reduce language and unit-conversion errors. |
| Order Confirmation | Confirm material, processing, inspection, packaging, delivery milestones and cost responsibilities item by item. | A clear written quotation and mutually agreed purchase requirements. |
| Delivery Coordination | Coordinate production / sourcing progress, labels, packing lists and shipping documents. | Check dimensions, quantities and heat/batch correspondence at agreed milestones. |
| After-Sales Follow-Up | Review issues using order number, heat number, arrival photographs and test records. | A defined issue description and documented resolution communications. |
Qida focuses on clear specifications, material requirement checks and delivery coordination. Include cutting, cut-to-length, surface treatment, third-party inspection and certificate requirements in your enquiry so that the achievable scope can be agreed before order placement.
08 / Request for Quotation
For an accurate quotation, please provide:
A240 / 304L + t×W×L + finish code and sample + one / two-side protective film + permitted scratch level + quantity + processing drawings + destination port. Include project specifications and inspection plans where available.
Define Specifications, Quality and Delivery in One Enquiry
Send your purchasing list to Shandong Qida Metal Technology Co., Ltd. We will review standards, dimensions and destination requirements with you.
Send an Enquiry · qidamt@163.com
139-6951-8618
Technical Sources & Ordering Notes
This selection and enquiry guide is compiled from the primary public sources below. Values are not an inspection certificate for a delivery batch and do not imply a supply or authorization relationship with the source publishers. The agreed order governs standard edition, product form, thickness range, specimen and delivery condition. Similar grades are not automatically equivalent. Confirm project certification and inspection documents before ordering.
