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AISI/SAE 4140 Carbon Steel Bar

4140 is a 1% chromium-molybdenum medium hardenability general-purpose high-strength steel, usually hardened and tempered in the tensile range of 850-1000 Mpa (condition T). 4140 now have improved machinability, which greatly increases feed and/or speed, while extending tool life without affecting mechanical properties. The prehardening and tempering 4140 can be further case hardened by flame or induction hardening and nitriding.

Classification :

Carbon Steel Bar

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AISI/SAE 4140 Carbon Steel Bar Description

Product Parameters

Product Name	AISI/SAE 4140 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	Ni
AISI 4140	0.75-1.00	0.035	0.38-0.43	0.035	0.20-0.35	0.8-1.1	0.15-0.25

Mechanical Properties

Grade	Tensile Strength psi	Yield Strength psi	Elongation %	Hardness HRC
AISI 4140	100k	80k	20	18-22

Scope of Application

SAE 4140 are widely used in most industrial sectors, with a wide range of applications, such as: adapters, spindles, axles, bolts, crankshafts, connecting rods, chuck bodies, chucks, conveyor belt pins and rollers, ejection pins, forks, gears, Guide rods, hydraulic shafts and parts, lathe spindles, logging parts, milling spindles, motor shafts, nuts, clamping rods, various pins, pins, pump shafts, plungers, sleeve, spindle, sprocket, stud bolt, tool holder, torsion bar, worm, etc.

Factory Appearance

Shandong Zhongwei Metal Products Co., Ltd. is located at No.2 Dongshou, Qianjiang Village, Hanji Town, Dongchangfu District, Liaocheng City, Shandong Province. Its industry is wholesale, and its business scope includes: sales of metal materials; Non-ferrous metal alloy sales; Wholesale of hardware products; Sales of metal fittings; Metal material manufacturing; Sales of thermal insulation materials; Mechanical equipment sales; Mechanical equipment leasing; Sales of mechanical parts and spare parts; Sales of chemical products (excluding licensed chemical products); Building materials sales, etc.
We have many years of production experience and strong production strength.

Packing and shipping

The company's products are diversified and purchased at one stop, which helps you save time in finding product manufacturers.
The introduction of advanced production equipment and absorption of advanced technology at home and abroad, the use of standard profiles, beautiful appearance, reasonable stress, high assembly accuracy.

Application Areas

Only make fine products! Do not accept, manufacture or release defective products; We are always committed to bringing the best products to our customers, and we are also looking forward to cooperating with more foreign agents to jointly develop the local market and achieve mutual benefit and win-win results!

Customer visit

Why Choose Us

Shandong Zhongwei Metal Products Co., Ltd

We focus on the processing and manufacturing of seamless steel tubes and plates, and have strong technical strength. The company covers an area of more than 6,000 square meters, with more than 200 skilled workers of all kinds. The products have won the reputation of AAA enterprise in national quality and service, famous brand products recognized in China market and famous brands in China.
The company's products are diversified and purchased at one stop, which helps you save time in finding product manufacturers.
The introduction of advanced production equipment and absorption of advanced technology at home and abroad, the use of standard profiles, beautiful appearance, reasonable stress, high assembly accuracy.

Quality Guarantee

"Customer first service concept and action" is the reason why many customers choose us;

Production Equipment

We have many years of production experience and strong production strength.

Production experience

The company covers an area of more than 6,000 square meters, with more than 200 skilled workers of all kinds.

Professional Service

Only make fine products! Do not accept, manufacture or release defective products;

HONOR