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Quenched and Tempered SAE8620 Alloy Steel Round Bar with High Hardenability and Good Weldability

Minimum Order Quantity	1 Ton
Price	US $850-1,250 / Ton

Product Details

Diameter Range	6-630mm	Material Grade	SAE8620 / 20CrNiMoA
Surface Treatment	Polished	Tensile Strength	≥980 MPa
Yield Strength	≥785 MPa	Elongation	≥9%
Reduction Area	≥40%	Impact Energy	≥47 J
Quenching Temperature	850°C	Tempering Temperature	200°C
Carbon Content	0.17-0.23%	Silicon Content	0.17-0.37%
Manganese Content	0.6-0.95%	Chromium Content	0.4-0.7%
Molybdenum Content	0.20-0.30%
Highlight	Quenched and Tempered Steel Round Bar , High Hardenability Alloy Steel Bar , Good Weldability SAE8620 Steel Rod

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Product Description

SAE8620 / 20CrNiMoA Mechanical Alloy Steel Bar

High-quality surface quenched and tempered heat treated alloy steel bar with excellent mechanical properties and carburizing characteristics.

Product Overview

20CrNiMoA SAE8620H steel round rod is a hot rolled alloy bar specifically designed for chemical and mechanical applications. This low carbon nickel chromium molybdenum alloy offers superior carburized properties, excellent formability, and reliable weldability.

Key Features

Excellent machinability performance
Superior cold strain plasticity
Reliable weldability characteristics
High hardenability without post-tempering fragility

International Standards Comparison

Chinese	American	German	Japanese
GB 20CrNiMo	SAE8620	DIN 1.6523	/

Chemical Composition

Element	Content Range (%)
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 cooled)
Tempering Temperature	200°C (air cooled)
Tensile Strength (σb)	≥980 MPa (100 kgf/mm²)
Yield Strength (σs)	≥785 MPa (80 kgf/mm²)
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 components. 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, and crankshafts.

Available Stock Sizes

Round bar diameters: 12-380mm

Material Forms & Conditions

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

Quality & Service Advantages

Quality Assurance

Materials sourced exclusively from government-owned steel mills ensuring consistent quality and reliability. ISO 9001 certified quality management system with regular audits and recertification.

Delivery Performance

Speedy and timely delivery with priority treatment for all business transactions. Shortest possible lead times for both raw materials and finished products with machining or heat treatment.

Value-Added Services