ASTM A36 Medium Heavy Plate

ASTM A36 is an American standard specification for ASTM A36 medium heavy plate covering plates, shapes, and bars. A36 plate is a low-carbon steel with a minimum yield strength of 250 MPa (36 ksi) and tensile strength of 400–550 MPa — properties that made it the default structural steel across North America and much of the world.

ASTM A36 medium heavy plate refers to thickness range: medium plate runs roughly 6–20mm, heavy plate 20mm and above, up to 100mm in our standard supply. These thicker plates carry the loads in bridges, equipment bases, and structural columns — applications where a failure is not an option and the steel must be verifiably to spec.

Why has A36 endured for decades? Because it is forgiving: excellent weldability without preheat in most cases, good machinability, and predictable mechanical properties across a wide thickness range. Engineers know exactly what they are getting — and with certification per heat, they can prove it.

Properties and Availability

A36 is also the base for galvanized structural work: its carbon level galvanizes cleanly, and it welds readily after galvanizing. For equivalent supply to other standards, we also stock S235JR (EN), Q235B (GB), SS400 (JIS), and St37-2 (DIN) — often interchangeable depending on your project spec.

Key Features and Benefits

The Grade Everyone Knows

A36 is the common language of structural steel. Your engineer, your fabricator, and your inspector all know exactly what A36 means — simplifying specification, fabrication, and acceptance worldwide.

Welds Without the Drama

Low carbon content means A36 welds readily with standard procedures — no preheat required for most thicknesses, no exotic consumables. Your fabrication shop burns through it with standard FCAW/SMAW processes and standard skills.

Machines, Bends, and Forms Predictably

Consistent chemistry gives consistent behavior: drilling, shearing, bending, and flame cutting all proceed predictably. Less rework, fewer surprises, faster fabrication schedules.

Certifiable to EN 10204 3.1/3.2

Each heat is certified. We supply MTC with every order and can provide EN 10204 Type 3.1 (mill-attested) or 3.2 (third-party witnessed) inspection certificates — the documentation international projects demand before steel goes into a bridge or pressure vessel.

Thick Stock, Ready for Heavy Projects

Our inventory covers ASTM A36 medium heavy plate from 6mm to 100mm, including 1,800 tons of monthly medium-heavy plate supply. Bridge girders, equipment bases, and heavy machinery frames source from stock — not from a mill lead time.

Product Specifications

Typical Applications

As an ASTM A36 medium heavy plate manufacturer and supplier, Sanhe Steel supplies A36 plate in bulk at factory-direct pricing for:

Bridge girders, structural columns, and building frameworks

Machinery bases, equipment frames, and heavy fabrication

Shipbuilding and marine structures

Storage tanks, pressure vessel shells (with 3.2 certification)

Transmission tower components and steel structures

General fabrication — from handrails to heavy weldments

Production Process

ASTM A36 medium heavy plate is produced at mill level by continuous casting and hot rolling, with per-heat testing of yield, tensile, and elongation. Plates are marked with heat numbers and grade identification for full traceability.

At Sanhe Steel, plates are processed to order: CNC flame or plasma cutting to exact shapes, shearing to dimension, drilling, and leveling. Our CNAS-accredited laboratory verifies chemistry and mechanical properties on incoming stock, and every order ships with the corresponding mill certificates.

Why Choose Sanhe Steel?

16 Years Supplying Structural Steel Worldwide

Since 2008, Sanhe Steel has delivered A36 and equivalent structural grades to bridge projects in Southeast Asia, automotive plants in Europe, and infrastructure in the Middle East. We know what international projects require — and we deliver it.

Our in-house laboratory verifies every batch against ASTM, JIS, and EN requirements before shipment. You get tested steel, not assumed steel.

Plates bundled on skids with protective coating and edge guards, container or breakbulk loading at Qingdao Port. Terms: FOB, CIF, CFR, DDP. Payment: T/T, L/C, D/P. Documentation: Commercial Invoice, Packing List, B/L, Certificate of Origin, Mill Test Certificate. For ASTM A36 medium heavy plate prices, bulk orders, or a quotation, contact our export team.

FAQ

Q: What is the difference between A36 and S235JR?

A: Very little in practical terms — both are ~250 MPa yield structural carbon steels. A36 specifies tensile range 400–550 MPa with silicon limits; S235JR specifies impact energy at room temperature. For most structural work they are interchangeable, but confirm with your engineer which standard your project specifies.

Q: Do you provide EN 10204 3.2 certification?

A: Yes — we coordinate third-party (SGS, BV, TÜV) witness testing and inspection for Type 3.2 certification. Lead time adds 3–7 days for inspection scheduling.

Q: What thickness range counts as "medium heavy plate"?

A: In common industry usage, medium plate is 6–20mm and heavy plate is 20–100mm+. We supply the full range from stock, with heavier plates (up to 250mm) available through mill partnerships.

Q: Can you cut ASTM A36 medium heavy plate to complex shapes?

A: Yes — CNC flame and plasma cutting handles rectangles, circles, and irregular profiles with accurate tolerances. Send drawings and we will quote the cut parts.

Q: What is your MOQ for export orders?

A: MOQ depends on size and processing: typically 20–25 tons for standard plate, lower for processed parts. For project quotes, send your total tonnage and size breakdown and we