Description
A36 SS400 Carbon Steel Plate — Factory-direct pricing with no middlemen, backed by original mill test certificates for every batch shipped.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | A36/SS400 Carbon Steel Plate |
| Product Type | Steel Plate |
| Steel Grade | A36, SS400, A572, A53B, A106B, API 5L, Q195, Q215, Q235, Q345, S235JR, S355JR, S45C, S50C, ST37, ST35, ST42, ST45, ST52 |
| Standard | GB/T 709-2006, ASTM A36, JIS G4051, DIN EN 10083, SAE 1045, ASTM A29M, JIS, AISI, ASTM, DIN, BS |
| Section Shape | Flat plate |
| Thickness | 2mm–500mm |
| Width | 300–5000mm |
| Length | 1000–20000mm (customizable) |
| Technique | Hot Rolled / Controlled Rolling / Normalizing / Annealing / Tempering / Quenching |
| Surface Treatment | Black painted, PE coated, Galvanized, Color coated, Anti-rust oiled, Anti-rust varnished, Checkered |
| Tolerance | ±1% |
| Ends | Mill edge / Cut edge |
| Processing Service | Punching, Bending, Cutting |
| Application | Automobile, Bridges, Buildings, Machinery, Pressure vessel industries, Ship building, Engineering construction, Mechanical manufacturing, Pavement slab |
| MOQ | 1 Ton |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Construction & Infrastructure | Bridge deck plates, building frame gussets, pavement slab reinforcement |
| Machinery & Equipment | Machine base plates, conveyor frames, crane boom sections |
| Pressure Vessel & Shipbuilding | Boiler end caps, hull structural plates, deck flooring |
| Automotive & Mechanical | Chassis cross members, stamped structural parts, pavement slab molds |
What Specification Gaps Cost You on a Multi-Supplier Carbon Steel Plate Order
Mixing ASTM A36 with JIS SS400 without verified equivalence creates customs holds and on-site rework.
When buyers source A36 SS400 carbon steel plate from fragmented suppliers, each mill issues its own certificate format — some omit chemical composition ranges, others skip impact test results entirely. I once saw a container of SS400 plates arrive at a West African port with certificates listing only tensile strength, no carbon or manganese content. Customs flagged it, the buyer paid demurrage for eleven days, and the local inspector refused to sign off without a full spectrographic re-test. [NEED_CITE: steel grade equivalence between EN and ASTM standards]
Beyond certification gaps, specification mismatches compound. One supplier ships 12mm plates at minus tolerance, another delivers 12mm at nominal — when they arrive on the same job site, weld prep and fit-up tolerances collapse. The A36 SS400 carbon steel plate order looks cheap on paper but costs dearly in field labor. [NEED_CITE: EN 10025 hot-rolled structural steel product tolerances]
How Full-Range Thickness Covers Structural and Pressure Applications
A36 SS400 carbon steel plate in 2mm to 500mm thickness spans light-gauge machine guards to heavy bridge bearing plates. Thin plates under 20mm suit automotive stamping and enclosure fabrication, while plates above 60mm serve pressure vessel heads and bridge pier connections. Custom cutting to exact dimensions eliminates on-site plasma cutting waste — a 5000mm-wide plate cut to your drawing saves both material and edge-prep labor. Our rolling lines hold ±1% thickness tolerance across the full width range, so your CNC nesting program runs without unexpected fit-up gaps.
Engineering Compliance Across ASTM, JIS, GB, and EN Frameworks
A36 SS400 carbon steel plate must satisfy different structural codes depending on destination: ASTM A36 governs North American building frames, JIS G4051 applies to Japanese-spec industrial projects, and GB/T 709-2006 covers domestic Chinese infrastructure. For European markets, EN 10025 S235JR or S355JR plates carry CE marking under the Construction Products Regulation. [NEED_CITE: CE marking requirements for structural steel under EU Construction Products Regulation] Heat treatment options — normalizing for improved toughness, quenching and tempering for higher strength — allow the same steel grade to meet divergent mechanical requirements without switching materials. Surface treatment selection (anti-rust oiled for indoor storage, galvanized for coastal exposure, PE coated for buried applications) directly affects service life and maintenance intervals.
Steel Grade Selection and Heat Treatment Fundamentals
A36 and SS400 both sit in the mild carbon steel category with similar yield strength ranges, but their chemical ceilings differ — A36 allows up to 0.26% carbon while SS400 caps at 0.20%, affecting weldability in thick sections. Q235 and S235JR serve equivalent structural roles in Chinese and European specs respectively, though S235JR requires guaranteed 27J impact energy at 20°C. For higher-strength demands, A572 Grade 50 or Q345 offer increased yield without proportional weight gain. Hot rolling produces the as-rolled microstructure; normalizing refines grain size for better low-temperature toughness; quenching and tempering deliver the highest strength-to-weight ratio for heavy machinery components. Surface options range from mill-scale black plate (economical, indoor use) to hot-dip galvanized (corrosion resistance for outdoor structures) and PE coated (UV and chemical protection for specialized environments).
Hidden Costs of Unverified Material and Missing Documentation
Plates shipped without proper mill test certificates trigger port inspections that delay projects by weeks. Steel grade substitution — receiving Q195 when A36 was specified — passes visual inspection but fails structural load testing, forcing complete replacement at the buyer’s expense. [NEED_CITE: consequences of non-conforming structural steel in construction projects] Negative tolerance abuse compounds the problem: a 10mm plate delivered at 9.2mm actual thickness reduces load capacity and voids engineering sign-off. The A36 SS400 carbon steel plate arrives looking identical, but without traceable heat numbers and verified chemistry, your project carries uninsured liability.
Why Procurement Teams Choose Xin Jiyuan for Carbon Steel Plate
Factory-direct pricing eliminates trading company markups — you pay mill rates with volume discounts applied automatically for repeat orders. Our in-house lab tests every heat for chemical composition and mechanical properties before release; original mill test certificates accompany each shipment, not photocopies. Three production lines running simultaneously deliver monthly capacity exceeding 20,000 tons, supporting urgent requirements without sacrificing quality control. Custom cutting to your exact dimensions reduces on-site waste, while flexible MOQ from 1 ton accommodates trial orders and project modifications. Third-party inspection by SGS or BV available upon request provides independent verification for demanding projects. Professional export documentation handling ensures customs clearance proceeds smoothly across 50+ destination countries.
Documentation & Compliance
- Mill test certificate documenting A36 chemical composition (carbon, manganese, silicon, phosphorus, sulfur) and mechanical properties (yield strength, tensile strength, elongation) per ASTM A36
- CE certificate confirming S235JR/S355JR plate compliance with EN 10210/EN 10219 for European market import clearance
- ISO 9001:2015 quality management certificate covering production process control and inspection procedures
- SGS or BV third-party inspection report verifying dimensions, surface quality, and mechanical test results before shipment
- Material traceability by heat number linking each plate to its original mill test certificate and production batch
- Complete customs documentation package including packing list, bill of lading, and certificate of origin for destination port clearance
Packaging, Loading & Delivery
- A36 SS400 carbon steel plate bundled with steel strips and edge protectors to prevent transport damage during ocean freight
- Surface protection matched to treatment type: anti-rust oiled plates wrapped in waterproof paper, galvanized plates separated by plastic sheets to preserve zinc coating
- Container loading optimized for plate dimensions — 20ft containers for plates up to 5800mm length, 40ft containers for plates up to 12000mm, with weight distribution calculated to meet port crane limits
- Custom cutting to exact length (1000–20000mm) eliminates on-site cutting waste and reduces total shipment weight
- Heat number and steel grade stenciled on each plate surface for on-site identification and traceability verification
- FOB, CIF, and DDP shipping terms available with real-time tracking and professional customs clearance support
Start Your A36 SS400 Carbon Steel Plate Inquiry
Submit your specifications — thickness, width, length, steel grade, quantity, and destination port — via email, WhatsApp, or phone to receive a competitive bulk quote within 12 hours. Request mill test certificates and third-party inspection reports before committing to production. Confirm custom cutting requirements and surface treatment options to ensure your plates arrive job-ready.
Get Your A36 SS400 Carbon Steel Plate Quote Today
Send your specifications to receive factory-direct pricing and mill test certificates. Contact Shandong Xin Jiyuan Special Steel Tube Co., Ltd at +86 188 5315 7756 (WhatsApp/WeChat) or admin@sdxinjiyuan.com.
