JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

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Polished Surface High Tensile Strength Alloy Steel Round Bar for Mold Steel

China Polished Surface High Tensile Strength Alloy Steel Round Bar for Mold Steel

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Polished Surface High Tensile Strength Alloy Steel Round Bar for Mold Steel

MOQ： 1 Ton
Price： US $850-1,350 / Ton
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Diameter Range	6-630mm
Round Bar Diameter	16-600mm
Plate Thickness	16-200mm
Plate Width	200-800mm
Length Range	3000-6000mm
Carbon Content	0.37-0.44%
Silicon Content	0.17-0.37%
Manganese Content	0.50-0.80%
Phosphorus Content	≤0.025%
Sulfur Content	≤0.025%
Chromium Content	0.60-0.90%
Nickel Content	1.25-1.65%
Molybdenum Content	0.15-0.25%
Surface Treatment	Polished
Production Capacity	500tons

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Product Details
Company Details

Product Specification


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

Alloy Steel Round Bars, Flat Bars & Engineering Steels

Hot rolled and forged 1.6582 4340 40CrNiMoA 34CrNiMo6 alloy steel rods for tool applications and heavy machinery components.

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 Type	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 toughness properties
Excellent hardenability stability and anti-overheating characteristics
Superior high tensile strength with exceptional 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 capabilities including sawing, grinding, and polishing machines available for custom specifications.

Additional Steel Products

DIN	AISI	JIS	GB (China)	Flat Bar Thickness (mm)	Flat Bar Width (mm)	Flat Bar Length (mm)	Round Bar Diameter (mm)	Round Bar Length (mm)	Manufacturing Process
1.121	SAE1050	S50C	50#	10-450	155-2200	2000-12000			Forged, Hot Rolled
1.2311	P20	PDS-3	3Cr2Mo	10-460	155-2200	2000-10000	20-200	2000-6000
1.2738	P20+Ni	-	3Cr2NiMnMo	21-300	155-2200	2000-8000	20-200	2000-6000
1.2379	D2	SKD10	SKD10	10-200	155-810	2000-6000	14-80	3000-6000
1.2080	D3	SKD1	3Cr2Mo	10-200	155-810	2000-6000	20-200	3000-6000
1.2083	420	-	4Cr13	10-500	155-1200	2000-6000	12-300	3000-6000
1.2344	H13	SKD61	4Cr5MoSiV1	10-500	155-1600	2000-6000	16-400	3000-6000
1.2510	O1	SKS3	9CrWMn	10-200	155-810	2000-6000	20-200	3000-6000
1.7225	SAE4140	SCM440	42CrMo	10-280	155-2200	2000-6000	16-450	3000-6000

Company Overview

We are a professional special steel company specializing in tool and die steel since 2005. Our comprehensive 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.

To ensure consistent high quality, we maintain close partnerships with leading Chinese special steel manufacturers including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, and Daye Special Steel.

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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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