A36/Q235/S235JR Carbon Steel Plate

A36, Q235, and S235JR are versatile hot-rolled carbon structural steel plates widely used in construction and general fabrication. Manufactured to ASTM, GB, and EN standards respectively, they provide a cost-effective solution for various industrial projects. Common applications include building structures, bridges, shipbuilding, and general engineering components requiring robust performance.

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PRODUCT DETAILS

Our Mild Carbon Steel Plates are available in multiple international standards, including ASTM A36, GB Q235, and EN S235JR. These are the most widely used low-carbon steel grades globally, offering excellent weldability, formability, and cost-effectiveness for general structural and engineering applications. While they conform to different regional specifications (American, Chinese, and European), their mechanical properties are largely comparable, making them interchangeable for many projects. Each grade ensures reliable performance in construction, machinery, and fabrication.

Product Parameters

Product Name A36/Q235/S235JR Carbon Steel Plate
Production Process Hot Rolling, Cold Rolling
Material Standards AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Width 100mm-3000mm
Length 1m-12m, or Customized Size
Thickness 0.1mm-400mm
Delivery Conditions Rolling, Annealing, Quenching, Tempered or Standard
Surface Process Ordinary, Wire Drawing, Laminated Film

 

Chemical Composition

C Cu Fe Mn P Si S
0.25~0.290 0.2 98 1.03 0.04 0.28 0.05

Mechanical Properties

A36 Limit Tensile Strength Yield Strength Elongation at Break
(Unit: 200mm)
Metric 400~550MPa 250MPa 20.00%
Imperial 58000~79800psi 36300psi 20.00%

Scope of Application

Bolted, riveted or welded structures for bridges, buildings and oil drilling rigs.
Used for forming storage tanks, silos, bearing plates, fixtures, rings, templates, fixtures, sprockets, cams, gears, bottom plates, forgings, decoration engineering, piles, brackets, automobiles and agricultural equipment, frames, mechanical parts, etc.

Comparison Table: A36 vs. Q235 vs. S235JR

Parameter ASTM A36 GB Q235 EN S235JR
Standard / Region American (ASTM) Chinese (GB) European (EN)
Material Number – – 1.0038
Carbon (C) max 0.25 – 0.29% 0.17 – 0.22% 0.17 – 0.20%
Manganese (Mn) 0.80 – 1.20% 0.30 – 0.70% ≤ 1.40%
Yield Strength (min) 250 MPa (36 ksi) 235 MPa (for thickness ≤16mm) 235 MPa (for thickness ≤16mm)
Tensile Strength 400 – 550 MPa 370 – 500 MPa 360 – 510 MPa
Impact Test Not required Optional (often 20°C) Required at 20°C (27J)
Typical Applications Structural steel, bridges, buildings General fabrication, automotive frames Construction, machinery, welded parts

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APPLICATION

ship

Ship

Chemical Industry

Chemical Industry

Electricity

Electricity

Oil and gas transportation

Oil and gas transportation

FAQ

1. How to get samples to check the quality? How long can I get the samples?
Answer:After confirming the price, we are happy to provide samples for your evaluation. After confirming the sample details, the samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
2.Do you provide samples ? is it free or extra ?
Answer:We provide samples free of charge, but the customer is responsible for the courier freight.
3. Do you accept the third party inspection?
Answer: Yes absolutely we accept.
4.Can you accept customization?
Answer:Yes. If you have special requirements on products or packages, we can do customization for you.
5.How do you control the quality?
Answer:We have professional inspectors to analyze chemical composition of raw materials and test the finished products strictly according to standard stipulated in the contract.  In this process, Internal and external surfaces, two ends appearance, bending degree, fixed length, outer diameter and wall thickness dimension etc will be checked one by one.  You can be assured that all the products you get from us are reliable.

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