JIS SCM220 20CrNiMoA Quenched and Tempered Alloy Steel Round Bar with Polished Surface and High Hardenability

최소 주문 수량	1톤
가격	US $850-1,250 / Ton

제품 상세 정보

모델 번호.	SCM220 20크니모아	표면 처리	우아한
합금 종류	합금	직경 범위	10-350mm
생산능력	500톤	담금질 온도	850°C
템퍼링 온도	200 ° C	인장강도	≥980MPa
항복 강도	≥785Mpa	연장	≥9%
감소지역	≥40%	충격 에너지	≥47J
탄소 함량	0.17-0.23%	크로미움 콘탠츠	00.4-0.7%
몰리브덴 함량	0.20-0.30%
강조하다	Quenched and Tempered Steel Round Bar , Polished Surface Alloy Steel Bar , High Hardenability Steel Rod

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JIS SCM220 20CrNiMoA Alloy Steel Round Bar

Quenched and tempered steel bar with diameters ranging from 10-350mm, ideal for demanding industrial applications.

Product Overview

20CrNiMoA SAE8620H steel round rod is a hot rolled alloy bar designed for chemical and mechanical applications. This low carbon nickel chromium molybdenum alloy offers excellent carburized properties, formability, and weldability, making it one of the most widely used carburizing alloys in industry.

Key Features

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

International Standards Equivalents

Chinese	American	German	Japanese
GB 20CrNiMo	SAE 8620	DIN 1.6523	JIS SCM220

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 cooled)
Tempering	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. Available in various conditions including pre-hardened, hot rolled, annealed, quenched and tempered, with surface conditions ranging from black, pre-machined, grinding, to polished finishes.

Why Choose Our Steel Products

Quality Assurance

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

Reliable Delivery

We prioritize timely delivery for all business transactions, ensuring your materials arrive when you need them, whether raw or finished with machining or heat treatment.

Quality Commitment

Our ISO 9001 certified quality management system undergoes regular audits and recertification to maintain the highest standards and meet customer demands.

Comprehensive Services

Quality special steel for all industrial applications
Orders of any size or length with fast shipping
Unique inventory of specialty steel products
Value-added services including metal cutting, sizing, machining, and heat treatment
Sawing services for small or large quantities
Excellent customer service support

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