AISI/SAE 4130 Carbon Steel Bar

4130 cold-rolled round bars provide some recognized weldability without affecting the wear and impact resistance of the steel, carbon steel 4130 bars also have excellent machining properties and can be heat treated. At the same time, it has high tensile strength and high yield strength.

Classification ：

Carbon Steel Bar

Keywords ：

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AISI/SAE 4130 Carbon Steel Bar Description

Product Parameters

Product Name	AISI/SAE 4130 Carbon Steel Bar
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
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
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
Surface Process	Bright, Polished, Black
Other Services	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

Chemical Composition

Grade	Mn	S	C	P	Si	Cr	Mo
AISI 4130	0.4-0.8	0.04	0.28-0.33	0.035	0.15-0.35	0.8-1.1	0.15-0.25

Mechanical Properties

Grade	Tensile Strength N/mm2 Min	Yield Strength N/mm2 Min	A,% Min	Z,% Min
AISI 4130	930	735	12	50

Scope of Application

SAE 4130 round bars are commonly used in structural applications, including brackets, gears, and some aircraft exteriors.

Packing and delivery

We are committed to providing customers with one-stop steel solutions, including product consulting, procurement, logistics, after-sales service, etc. Our professional team has rich industry experience and resources, which can quickly respond to customer needs and provide customized procurement solutions.

WHY CHOOSE US

QUALITY ASSURANCE

Full-process quality control + international certification, support for third-party testing, traceability, and a pass rate of 99.8%+.

ABUNDANT INVENTORY

Warehouses in multiple ports cover a full range of product categories, with high turnover of standard specifications and immediate order fulfillment.

FAST SHIPPING

Direct shipping from multiple ports + partnerships with leading logistics providers, shipment can be arranged within 24 hours, with ocean shipping time as fast as 3-5 days.

PREMIUM SERVICE

After-sales service points are located in core markets, providing 12-hour response times, technical guidance, and full-lifecycle support.

FACTORY APPEARANCE

With a registered capital of 35 million yuan, the company has 4 international advanced production lines and more than 100 employees.