ASTM A36 Carbon Steel Plate — Factory Direct Supplier
Premier Structural Steel Plate for Construction, Fabrication & Industrial Applications
ASTM A36 is the most widely used carbon structural steel plate in the world. Known for its excellent weldability, machinability, and cost-effectiveness, A36 plate is the go-to material for structural beams, base plates, brackets, and general fabrication. Huaxia-steel supplies A36 steel plate in thicknesses from 1.2 mm to 300 mm, with full mill test certificates and global shipping.
**Need A36 plate pricing?** Get Factory Direct Quote →
A36 Carbon Steel Plate — Quick Specs
| Property | Value |
|---|---|
| **Grade** | ASTM A36 / A36M |
| **Equivalent Standards** | EN S275 / DIN ST37-2 / JIS SS400 / GB Q235B / AS/NZS 250 |
| **Thickness Range** | 1.2 mm – 300 mm (3/64″ – 12″) |
| **Width** | 1,000 mm – 3,000 mm (standard 1,500 mm / 2,000 mm / 2,500 mm) |
| **Length** | 2,000 mm – 12,000 mm (cut-to-size available) |
| **Surface Finish** | Hot-Rolled (black), Pickled & Oiled, Shot-Blasted + Primed |
| **Yield Strength** | 250 MPa (min) |
| **Tensile Strength** | 400–550 MPa |
| **MOQ** | 5 tons (stock sizes), 20 tons (mill direct) |
| **Delivery Time** | 5–10 days (stock), 25–35 days (mill rolling) |
| **Certification** | EN 10204 3.1/3.2 MTC, ISO 9001, CE |
Chemical Composition of ASTM A36
| Element | C | Mn | Si | P (max) | S (max) | Cu |
|---|---|---|---|---|---|---|
| **Standard** | ≤0.25 | — | ≤0.40 | 0.040 | 0.050 | ≤0.20 |
| **Typical** | 0.16–0.20 | 0.60–0.90 | 0.15–0.30 | 0.015 | 0.010 | 0.02 |
For plates thicker than 25 mm, ASTM A36 allows carbon up to 0.27% and manganese up to 1.20% to ensure adequate strength in heavier sections.
Mechanical Properties
| Property | Plates ≤ 200 mm | Plates > 200 mm |
|---|---|---|
| **Yield Strength (MPa)** | 250 (min) | 220 (min) |
| **Tensile Strength (MPa)** | 400–550 | 400–550 |
| **Elongation in 200 mm (%)** | 20 (min) | 18 (min) |
| **Elongation in 50 mm (%)** | 23 (min) | 21 (min) |
| **Brinell Hardness (HB)** | 119–162 | 119–162 |
| **Impact (Charpy V, 0°C)** | 27 J (typical) | 20 J (typical) |
**Need impact-tested A36 plate for low-temperature service?** Ask about A36 with CVN testing →
Available Plate Sizes
Standard Thickness Range
| Category | Thickness | Tolerance | Condition |
|---|---|---|---|
| **Sheet** | 1.2 – 3.0 mm | ±0.12 mm | Hot-Rolled / Pickled |
| **Thin Plate** | 3.0 – 8.0 mm | ±0.15 mm | Hot-Rolled / Pickled |
| **Medium Plate** | 8.0 – 25 mm | ±0.30 mm | Hot-Rolled |
| **Heavy Plate** | 25 – 60 mm | ±0.50 mm | Hot-Rolled / Normalized |
| **Extra Heavy** | 60 – 120 mm | ±0.80 mm | Normalized |
| **Special Heavy** | 120 – 300 mm | ±1.50 mm | Normalized + Tempered |
Popular Stock Sizes
| Thickness (mm) | Width × Length (mm) | Availability |
|---|---|---|
| 3.0 | 1,500 × 6,000 | ✅ In Stock |
| 5.0 | 1,500 × 6,000 | ✅ In Stock |
| 6.0 | 1,500 × 6,000 | ✅ In Stock |
| 8.0 | 2,000 × 6,000 | ✅ In Stock |
| 10 | 2,000 × 6,000 | ✅ In Stock |
| 12 | 2,000 × 6,000 | ✅ In Stock |
| 16 | 2,000 × 6,000 | ✅ In Stock |
| 20 | 2,000 × 6,000 | ✅ In Stock |
| 25 | 2,000 × 6,000 | ✅ In Stock |
| 30 | 2,000 × 6,000 | ✅ In Stock |
| 40 | 2,000 × 6,000 | ✅ In Stock |
| 50 | 2,000 × 6,000 | ✅ In Stock |
| 75 | 2,000 × 6,000 | ✅ In Stock |
| 100 | 2,000 × 6,000 | ✅ In Stock |
**Need custom dimensions or cutting?** Request Custom Sizing →
Processing Services
Cutting & Machining
| Service | Capability | Tolerance |
|---|---|---|
| **Plasma Cutting** | Up to 150 mm thick | ±1.5 mm |
| **Flame Cutting (Oxy-fuel)** | Up to 300 mm thick | ±2.0 mm |
| **Laser Cutting** | Up to 25 mm thick | ±0.2 mm |
| **Waterjet Cutting** | Up to 100 mm thick | ±0.15 mm |
| **Beveling** | V / U / X / Y grooves | ±1.0° |
| **Milling & Drilling** | Full CNC machining | ±0.1 mm |
Surface Treatment
| Service | Description | Application |
|---|---|---|
| **Pickling & Oiling** | Acid clean + rust-preventive oil | General fabrication |
| **Shot Blasting** | SA 2.5 surface prep | Pre-painting |
| **Priming** | Zinc-rich epoxy or shop primer | Marine / structural |
| **Galvanizing** | Hot-dip zinc coating | Corrosion protection |
| **Cladding** | Stainless or nickel alloy overlay | Chemical / pressure vessels |
Quality Assurance
Testing & Inspection
| Test | Standard | Frequency |
|---|---|---|
| **Chemical Analysis** | ASTM E415 | Every heat |
| **Tensile Test** | ASTM A370 | Every 50 tons |
| **Bend Test** | ASTM E190 | Every batch |
| **Impact Test (Charpy V)** | ASTM E23 | Per request |
| **Ultrasonic Testing** | ASTM A578 | 100% scan (optional) |
| **Dimensional Check** | — | Every plate |
| **Surface Inspection** | Visual + magnetic particle | Every plate |
Certifications & Documents
- ✅ **EN 10204 3.1 Mill Test Certificate** (standard with every order)
- ✅ **EN 10204 3.2 Certificate** (with SGS/BV/TUV third-party inspection)
- ✅ **ISO 9001:2015 Quality Management System**
- ✅ **Material Test Report (MTR)** with heat number traceability
- ✅ **CE Marking** (for European construction projects)
- ✅ **Country of Origin Certificate** (for customs clearance)
**Need third-party inspection?** Arrange SGS/BV/TUV Inspection →
Applications of A36 Steel Plate
Construction & Infrastructure
- Structural beams, columns, and plates
- Building frame components
- Bridge decks and girders
- Highway guardrails and sign posts
Industrial Fabrication
- Base plates for heavy equipment
- Machinery foundations
- Conveyor supports
- Hopper and bin construction
Oil & Gas
- Storage tank shells and roofs
- Separator vessel bodies
- Pipe supports and saddles
- Wellhead equipment bases
Marine
- Ship hull plates
- Deck plating
- Bulkhead structures
- Barge and dock components
Mining & Heavy Equipment
- Excavator buckets and liners
- Chute liners
- Hopper bodies
- Dozer blade reinforcement
A36 vs Alternative Plate Grades
| Grade | Standard | Yield (MPa) | Tensile (MPa) | Best For | Price Index |
|---|---|---|---|---|---|
| **A36** | ASTM | 250 | 400–550 | General structural | 1.0× |
| A572 Gr 50 | ASTM | 345 | 450+ | High-strength structural | 1.15× |
| A516 Gr 70 | ASTM | 260 | 485–620 | Pressure vessels | 1.25× |
| S275 | EN | 275 | 410–560 | European structural | 1.05× |
| SS400 | JIS | 245 | 400–510 | Asian market standard | 0.98× |
| Q235B | GB | 235 | 375–500 | Chinese domestic | 0.95× |
**Not sure which grade to choose?** Get Expert Recommendation →
International Standards & Equivalents
| Standard | Grade | Country / Region |
|---|---|---|
| ASTM A36 / A36M | A36 | USA |
| EN 10025-2 | S275JR | Europe |
| DIN 17100 | ST37-2 | Germany |
| JIS G3101 | SS400 | Japan |
| GB/T 700 | Q235B | China |
| AS/NZS 3678 | 250 | Australia / NZ |
| GOST | St3ps/sp | Russia |
Why Choose Huaxia-Steel for A36 Plate?
1. Mill-Direct Supply
We maintain direct supply agreements with China’s top plate mills (Baosteel, Shagang, Handan Steel). No middleman — you get mill-direct pricing.
2. Full Thickness Range (1.2–300 mm)
From thin sheet to extra-heavy plate, we cover every thickness in the A36 specification. No need to source from multiple suppliers.
3. Complete Processing
Flame cutting, plasma cutting, laser cutting, beveling, drilling, welding, and surface treatment — all done in-house to your drawings.
4. Global Shipping & Export Expertise
We export to 60+ countries with complete documentation: CO, MTC, packing list, fumigation certificate, and customs clearance support.
5. Strict Quality Control
Every plate is traceable from steel mill heat number to final delivery. Full chemical, mechanical, and dimensional testing on every batch.
6. Competitive MOQ
5-ton MOQ for stock sizes. Mill-direct orders (20+ tons) get the best pricing. Sample plates available for material verification.
**Get your A36 plate quote within 24 hours** → Contact Us →
Packaging & Shipping
| Method | Description | Best For |
|---|---|---|
| **Steel frame bundle** | Vertical/horizontal bundles, steel strapped | Standard export |
| **Wooden pallet** | Fumigated pallet with steel strapping | Cut-to-size plates |
| **Steel crate** | Welded steel frame with plywood lining | High-value / precision cut |
| **Container loading** | Floor-loaded or palletized | 20’/40′ container |
Export documentation included with every shipment:
- Packing list (weight, dimensions, piece count)
- Mill test certificate (EN 10204 3.1 or 3.2)
- Certificate of origin (CO / Form A / Form E)
- Fumigation certificate (ISPM 15)
- Commercial invoice
Frequently Asked Questions
What is ASTM A36 steel plate used for?
A36 is the most common structural steel plate, used for building frames, bridge components, machinery bases, storage tanks, ship hulls, and general fabrication where moderate strength and excellent weldability are needed.
What is the difference between A36 and A572 Grade 50?
A36 has a minimum yield of 250 MPa, while A572 Gr 50 has 345 MPa — about 38% stronger. A36 is cheaper and easier to weld; A572 is better for lighter, stronger structures. For most general fabrication, A36 is the standard choice.
Can A36 plate be welded?
Yes — A36 has excellent weldability using SMAW, GMAW, FCAW, and SAW processes. For plates over 25 mm thick, preheat (80–120°C) is recommended to prevent cracking. No post-weld heat treatment is required for most applications.
What is the maximum thickness available?
We supply A36 plate up to 300 mm thick. For plates over 120 mm, the material is supplied in normalized condition to ensure uniform mechanical properties throughout the thickness.
Do you provide cutting services?
Yes — we offer flame cutting (up to 300 mm), plasma cutting (up to 150 mm), laser cutting (up to 25 mm), and waterjet cutting (up to 100 mm). We can cut to your CAD drawings with ±1 mm tolerance.
What is the lead time for A36 plate?
Stock sizes (3–50 mm, standard widths) ship in 5–10 days. Custom-cut or mill-rolling orders take 25–35 days. International shipping adds 15–35 days depending on destination port.
Can you provide CE marking for European projects?
Yes. We supply A36 plate (or equivalent S275JR) with CE marking and Declaration of Performance (DoP) for construction projects in the EU.
**Have more questions?** Talk to Our Steel Experts →
Request Your A36 Plate Quote Today
Huaxia-steel is your trusted direct supplier for ASTM A36 carbon steel plate. With full thickness coverage (1.2–300 mm), complete processing services, and ISO 9001 quality assurance, we deliver mill-direct pricing with export-grade reliability to 60+ countries.
**Get Your Free Quote →** | **Download Full Spec Sheet (PDF) →**
*Huaxia-steel — Your Reliable Carbon Steel Supplier. ISO 9001 Certified. Exporting to 60+ Countries Worldwide.*
