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20CrNiMoA Alloy Steel Round Bar with Polished Surface and OD 6-630mm for Structural Applications

Quantità di ordine minimo	1 tonnellata
Prezzo	US $850-1,250 / Ton

Dettagli

Modello n.	20CrNiMoA	Trattamento superficiale	Lucido
Tipo di lega	Lega	Gamma di diametri	Diametro esterno 6-630 mm
Capacità produttiva	500TONNELLATE	Contenuto di carbonio	0.17-0.23
Contenuto di silicio	0.17-0.37	Contenuto del manganese	0,6-0,95
contenuto del cromo	0.4-0.7	Contenuto di molibdeno	0.20-0.30
Resistenza alla trazione	≥980MPa	Forza di snervamento	≥ 785 Mpa
Allungamento	≥9%	Zona di riduzione	≥40%
Impatto sull'energia	≥47 J
Evidenziare	20CrNiMoA Alloy Steel Round Bar , Polished Surface Alloy Steel Round Bar , OD 6-630mm Structural Steel Bar

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Descrizione di prodotto

SNCM220 20CrNiMo Structural Alloy Steel Round Bar

SAE 8620H Alloy Round Bar is a high-quality structural alloy steel manufactured according to Chinese Standard A50202. This low carbon nickel chromium molybdenum alloy offers excellent carburized properties, superior formability, and reliable weldability.

Key Features

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

International Standards Equivalents

Chinese (GB)	American (AISI)	German (DIN)	Japanese (JIS)
20CrNiMo	SAE 8620	1.6523	/

Chemical Composition

Element	C	Si	Mn	P	S	Cr	Mo	Cu	Ni
Content (%)	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

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

Why Choose Our Alloy Steel Products

Quality Assurance

We source materials exclusively from government-owned steel mills to ensure consistent quality and reliability in every product we supply.

Timely Delivery

We prioritize every order with efficient processing and logistics to ensure your materials arrive when you need them, whether raw or finished with machining/heat treatment.

Quality Commitment

Our ISO 9001 certified quality management system undergoes regular audits and continuous improvement to meet the highest industry standards.

Comprehensive Services

We provide specialty steel for all industries with value-added services including metal cutting, sizing, machining (blanking, milling, grinding), heat treatment, and custom sawing for any quantity.