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4340 Steel Round Bar - High Strength, Corrosion Resistant Alloy Steel with Shock

China 4340 Steel Round Bar - High Strength, Corrosion Resistant Alloy Steel with Shock

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4340 Steel Round Bar - High Strength, Corrosion Resistant Alloy Steel with Shock

MOQ： 1 Ton
Price： US $740-1,350 / Ton
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Surface Treatment	Polished
Diameter Range	6-630mm
Production Capacity	500tons
Round Bar Diameter	16-600mm
Plate Thickness	16-200mm
Plate Width	200-800mm
Length	3000-6000mm
Carbon Content	0.37-0.44%
Silicon Content	0.17-0.37%
Manganese Content	0.50-0.80%
Chromium Content	0.60-0.90%
Nickel Content	1.25-1.65%
Molybdenum Content	0.15-0.25%
Sulfur Content	≤0.025%
Model Number	4340

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Product Details
Company Details

Product Specification


Surface Treatment	Polished	Diameter Range	6-630mm
Production Capacity	500tons	Round Bar Diameter	16-600mm
Plate Thickness	16-200mm	Plate Width	200-800mm
Length	3000-6000mm	Carbon Content	0.37-0.44%
Silicon Content	0.17-0.37%	Manganese Content	0.50-0.80%
Chromium Content	0.60-0.90%	Nickel Content	1.25-1.65%
Molybdenum Content	0.15-0.25%	Sulfur Content	≤0.025%
Model Number	4340
High Light	High Strength 4340 Steel Round Bar ，Corrosion Resistant Alloy Steel Round Bar ，Shock Resistance 4340 Alloy Steel

4340 Steel Round Bar - Alloy Steel Round Bar 4340

Hot rolled and forged 1.6582 4340 40CrNiMoA 34CrNiMo6 alloy steel rod for tool applications, offering exceptional strength and durability for demanding industrial use.

International Grade Equivalents

GB	AISI	DIN	JIS	EN	TOCT	ISO
40CrNiMoA	4340	1.6582	SNCM439	41NiCrMo 7-3-2	40XH2MA (40XHMA)	36CrNiMo4

Product Specifications

Product Form	Diameter/Thickness (mm)	Width (mm)	Length (mm)
Round Bar	16-600	/	3000-6000
Plate	16-200	200-800	3000-6000

Custom specifications available upon request.

Chemical Composition

Grade	C	Si	Mn	P	S	Cr	Ni	Mo
40CrNiMo	0.37-0.44%	0.17-0.37%	0.50-0.80%	≤0.025%	≤0.025%	0.60-0.90%	1.25-1.65%	0.15-0.25%
4340	0.38-0.43%	0.15-0.35%	0.60-0.80%	≤0.035%	≤0.040%	0.70-0.90%	1.65-2.00%	0.20-0.30%

Key Features

Chromium molybdenum alloy steel construction
High strength and exceptional toughness
Excellent hardenability stability and anti-overheating properties
Superior high tensile strength with outstanding shock resistance

Typical Applications

Heavy machinery and high-load shaft components
Rotor shafts and turbine blades
Critical parts requiring special performance after nitriding treatment

Packaging Specifications

20ft Container: Gross Weight 27T (5.80m × 2.13m × 2.18m)
40ft Container: Gross Weight 27T (11.8m × 2.13m × 2.18m)

Delivery Timeline

Standard products: 15-20 days
Customized products: 30-50 days
Full equipment capability including sawing, grinding, and polishing machines for custom specifications

About Changfeng Tool & Die Steel
Professional special steel company specializing in steel products since 2005. Our product range includes Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel, and Forged Blocks.

We maintain close partnerships with leading Chinese steel enterprises including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, and Daye Special Steel to ensure premium quality standards.

Company Details

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Business Type:

Manufacturer,Distributor/Wholesaler,Exporter 
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Total Annual:

>1000000
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Employee Number:

>100 
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Ecer Certification：

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
https://www.stainless-strips.com/

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