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SAE8620H Alloy Steel Round Bar with Polished Surface, High Hardenability, and

China SAE8620H Alloy Steel Round Bar with Polished Surface, High Hardenability, and

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SAE8620H Alloy Steel Round Bar with Polished Surface, High Hardenability, and

MOQ： 1 Ton
Price： US $850-1,350 / Ton
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Model NO.	SAE8620H
Surface Treatment	Polished
Alloy Type	Alloy
Diameter Range	OD 6-630mm
Production Capacity	500tons
Carbon Content	0.17-0.23
Silicon Content	0.17-0.37
Manganese Content	0.6-0.95
Phosphorus Content	≤0.035
Sulfur Content	≤0.035
Chromium Content	0.4-0.7
Molybdenum Content	0.20-0.30
Copper Content	≤0.30
Tensile Strength	≥980(100) MPa
Yield Strength	≥785(80) MPa

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Product Details
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Product Specification


Model NO.	SAE8620H	Surface Treatment	Polished
Alloy Type	Alloy	Diameter Range	OD 6-630mm
Production Capacity	500tons	Carbon Content	0.17-0.23
Silicon Content	0.17-0.37	Manganese Content	0.6-0.95
Phosphorus Content	≤0.035	Sulfur Content	≤0.035
Chromium Content	0.4-0.7	Molybdenum Content	0.20-0.30
Copper Content	≤0.30	Tensile Strength	≥980(100) MPa
Yield Strength	≥785(80) MPa
High Light	Polished Surface Alloy Steel Round Bar ，High Hardenability SAE8620H Round Bar ，Good Weldability Bearing Steel Bar

SAE8620H Alloy Steel Round Bar

SAE8620H is a high-quality alloy construction steel round bar with excellent hardenability, non-brittle characteristics after tempering, superior weldability, and outstanding machinability and cold strain plasticity. This low-carbon nickel chromium molybdenum alloy offers exceptional carburized properties, formability, and weldability, making it the most widely used carburizing alloy steel in industrial applications.

Key Features

Excellent machinability performance
Superior cold strain plasticity
Outstanding weldability characteristics
High hardenability for enhanced performance

International Standards Equivalents

Chinese (GB)	American (AISI)	German (DIN)	Japanese (JIS)
20CrNiMo	SAE8620	1.6523	/

Chemical Composition

Element	C	Si	Mn	P	S	Cr	Mo	Cu	Ni
20CrNiMo	0.17-0.23	0.17-0.37	0.6-0.95	≤0.035	≤0.035	0.4-0.7	0.20-0.30	≤0.30	/

Mechanical Properties

Property	Value
Quenching Temperature	850°C (oil cooled)
Tempering	200°C (air cooled)
Tensile Strength (σb)	≥980 MPa (100)
Yield Strength (σs)	≥785 MPa (80)
Elongation (δ5)	≥9%
Reduction of Area (ψ)	≥40%
Impact Energy (Akv)	≥47 J

Typical Applications

Widely used in transmission systems, tractor motors, and small to medium automotive applications. Serves as an alternative to 12CrNi3 for high-class carburization and cyanide carburizing parts including oil drilling equipment, mining claws, and cones. Commonly specified for carburized gears, pinions, shafts, bearings, piston rings, ring gears, crankshafts, and other critical components.

Available Stock Sizes

Product Form	Diameter Range
Round Bar	12-380mm

Material Conditions & Forms

Available in various forms including round bars, flat bars, plates, and blocks. Material conditions include pre-hardened, hot rolled, annealed, quenched and tempered, with surface finishes ranging from black, pre-machined, ground, to polished surfaces.

Quality & Service Advantages

Quality Assurance

Materials are sourced exclusively from government-owned steel mills to ensure consistent quality and reliability. Our ISO 9001 certified quality management system undergoes regular audits and recertification to maintain the highest standards.

Delivery Performance

We prioritize timely delivery for all business transactions, ensuring both raw materials and finished products with machining or heat treatment reach customers in the shortest possible lead times.

Value-Added Services

Comprehensive processing services including metal cutting, sizing, machining (blanking, milling, grinding), heat treatment, and sawing for both small and large quantities. We accept orders of any size and length with fast shipping capabilities.

Company Details

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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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