A36/Q235/S235JR Carbon Steel Bar

The A36 steel grade is renowned for its excellent weldability, machinability, and structural integrity. It is a low-carbon steel that offers a good balance of strength and ductility, making it ideal for structural components in buildings, bridges, and other infrastructure projects. Similarly, Q235 and S235JR are widely recognized in the global market for their reliable performance and adaptability.
The smooth surface finish of the round steel not only enhances its aesthetic appeal but also facilitates easy handling and installation. Whether you are fabricating machinery, constructing frameworks, or creating custom metalwork, the A36/Q235/S235JR round steel provides the strength and durability required to get the job done right.

product details

specification

Product Name	A36/Q235/S235JR Carbon Steel Bar
Standard	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Diameter(mm)	Hot Rolling Round Bar	25-600	Cold Rolling Square Bar	6-50.8
	Hot Rolling Square Bar	21-54	Cold Rolling Hexagon Bar	9.5-65
	Cold Rolling Round bar	6-101.6	Forged Rebar	200-1000
Common Round Bar Specifications	3.0-50.8 mm, Over 50.8-300mm
Flat Steel Common Specifications	6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm
Hexagon Bar Common Specifications	AF5.8mm-17mm
Square Bar Common Specifications	AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Length	1-6meters, Size Accept Custom
Production Process	Hot Rolling, Cold Rolling
Error	±1%
Certification	ISO 9001 ，CE，API
Surface treatment	Hot dip galvanizing, spraying, phosphating, polishing, pickling, heat treatment
Country of origin	China
Main Applications	Construction engineering, machinery manufacturing, automotive industry, bridge construction, pipeline and transport equipment, furniture manufacturing, power equipment, railway industry
Package	Bundling, wooden box packaging, plastic film packaging, pallet packaging, anti-rust oil coating, identification label
Payment Term	TT, LC,Cash, Paypal, DP, DA,Western Union or Others.
After-sales service	1. Quality assurance period 2. Return and exchange policy 3. Delivery and acceptance assistance 4. Customer feedback collection

Product Display

Chemical Composition

C	Cu	Fe	Mn	P	Si	S
0.25～0.290	0.20	98.0	1.03	0.040	0.280	0.050

Mechanical Properties

A36	Limit Tensile Strength	Tensile Strength, Yield Strength	Elongation at Break(Unit: 200mm)	Elongation at Break(Unit: 50mm)	Modulus of Elasticity	Bulk Modulus(Typical for Steel)	Poisson's Ratio	Shear Modulus
Metric	400～550MPa	250MPa	20.0%	23.0%	200GPa	140GPa	0.260	79.3GPa
Imperial	58000～79800psi	36300psi	20.0%	23.0%	29000ksi	20300ksi	0.260	11500ksi

Physical Performance

Physical Performance	Metric	Imperial
Density	7.85 g/cm3	0.284 lb/in3

Equivalent Material

National Standard GB	European Standard EN	American Standard ASTM	German Standard DIN,WNr	Japanese Standard JIS	French Standard AFNOR	British Standard BS	Canada HG
Q235B	S235JR	A283C	St37-2	SM400A	E24-2	40A/40B	230G
Italy UNI	India IS	Switzerland SS	Australia ONORM	Norway NS	Spain UNE	International Standards ISO	Portugal NP
Fe360B	IS2062	1311/1312	RSt360B	NS12123	AE235B-FN	E235B/Fe360B	FE360-B