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

최소 주문 수량	1톤
가격	US $850-1,250 / Ton

제품 상세 정보

모델 번호.	20crnimoa	표면 처리	우아한
합금 종류	합금	직경 범위	외경 6-630mm
생산능력	500톤	탄소 함량	0.17-0.23
실리콘 함량	0.17-0.37	망간계 콘탠츠	0.6-0.95
크로미움 콘탠츠	0.4-0.7	몰리브덴 함량	0.20-0.30
인장강도	≥980MPa	항복 강도	≥785Mpa
연장	≥9%	감소지역	≥40%
충격 에너지	≥47J
강조하다	20CrNiMoA Alloy Steel Round Bar , Polished Surface Alloy Steel Round Bar , OD 6-630mm Structural Steel Bar

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제품 설명

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.