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Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good Weldability

Minimum Order Quantity	1 Ton
Price	US $850-1,350 / Ton

Product Details

Model NO.	AISI 8620	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
Tensile Strength	≥980(100) MPa	Yield Strength	≥785(80) MPa
Elongation	≥9%
Highlight	Polished Surface Steel Round Bar , High Hardenability Alloy Steel Round Bar , Good Weldability SAE 8620 Steel Bar

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Product Description

AISI 8620 Steel Bar | 16MnCr5 Steel Round Bar

SAE 8620H Alloy Round Bar is a high-quality alloy construction steel offering excellent hardenability, machinability, and weldability. This low carbon nickel chromium molybdenum alloy provides superior carburized properties and formability, making it the most widely used carburizing alloy in various industries.

Key Features

Excellent machinability performance
Superior cold strain plasticity
Outstanding weldability
High hardenability without fragility after tempering

International Standards

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

Chemical Composition

Element	Content (%)
Carbon (C)	0.17-0.23
Silicon (Si)	0.17-0.37
Manganese (Mn)	0.6-0.95
Phosphorus (P)	≤0.035
Sulfur (S)	≤0.035
Chromium (Cr)	0.4-0.7
Molybdenum (Mo)	0.20-0.30
Copper (Cu)	≤0.30

Mechanical Properties

Property	Value
Quenching Temperature	850°C (oil)
Tempering	200°C (air)
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

Applications

Widely used in transmission systems, tractor motors, and small to medium automotive applications. Ideal for higher-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, and crankshafts.

Available Sizes

Round Bar Diameter: 12-380mm
Available in various conditions including pre-hardened, hot rolled, annealed, quenched and tempered. Surface conditions include black, pre-machined, grinding, and polish.

Why Choose Our AISI 8620 Steel Bars

Quality Assurance

Materials sourced exclusively from government-owned steel mills with ISO 9001 certified quality management systems, ensuring consistent premium quality.

Timely Delivery

Priority treatment for all orders with shortest possible lead times, whether for raw materials or finished products with machining or heat treatment.

Comprehensive Services