Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars

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  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
  • Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
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Basic Info.

Model NO.
8620
Type
Alloy Steel Bar
Standard
AISI, ASTM, GB, JIS, DIN, BS
Technique
Forged
Application
Structural Steel Bar, Tool Steel Bar, Die Steel Bar
Surface Treatment
Black Surface
Alloy
Alloy
Special Use
Mold Steel, Free Cutting Steel, Cold Heading Steel
Payment Term
30% Tt Deposit, Balance Against Bl Copy
Length
3000-5800mm
Delivery Date
30 Days
Ex-Stock
No
Ut Standard
Sep 1921-84 D/D
Grain Size
ASTM E112
Non-Metallic Inclusiton
ASTM E45
Form
Round Bars/ Flat Bar / Blocks/ Tube
Process
Eaf+Lf+Vd+Forged+Heat Treatment(Optional)
Technology
Hot Rolled/ Forged/ Cold Drawn
Heat Treatment
Normalized;Annealed ;Quenched ;Tempered
Surface
Black; Peeled; Polished; Machined; Grinded; Turne
Test
Ensile Strength, Yield Strength, Elongation
Certificate
ISO/ Mill Certificate
Transport Package
Seaworthy Package
Trademark
Qilu
Origin
China
HS Code
7228400000
Production Capacity
400, 000ton/Year

Product Description

 
JIS SNCM220 | DIN 1.6523/21NiCrMo2 | AISI 8620 | BS 805M20 Engineering Steel

Quick Details

1: 8620 steel introduction

    AISI 8620 Steel is a low alloy nickel, chromium, molybdenum case hardening steel, generally supplied in the as rolled condition with a maximum hardness HB 255max. SAE steel 8620 offers high external strength and good internal strength, making it highly wear resistant. AISI 8620 steel has a higher core strength than grades 8615 and 8617.SAE 8620 alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. Pre hardened and tempered (uncarburized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content.

 

2: 8620 Steel equivalent
Country Japan Germany Britain USA
Standard JIS G4103 DIN 1654 BS970 ASTM A29
Grade SNCM220 21NiCrMo2/1.6523 805M20 8620
 
3: 8620 steel chemical composition
Grade C Si Mn P S Cr Mo Ni
8620 0.18-0.23 0.15-0.35 0.7-0.9 0.035 0.04 0.4-0.6 0.15-0.25 0.4-0.7
1.6523 0.17-0.23 0.4 0.65-0.95 0.035 0.035 0.4-0.7 0.15-0.25 0.4-0.7
805M20 0.17-0.23 0.1-0.4 0.6-0.9 0.03 0.03 0.35-0.65 0.15-0.3 0.4-0.7
SNCM220 0.17-0.23 0.15-0.35 0.6-0.9 0.03 0.03 0.4-0.65 0.15-0.25 0.4-0.7
 
4: 8620 steel mechanical properties  

    The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.

 

5: 8620 steel overviews

 

Size Round Dia 6-1200mm
Plate/Flat/Block Thickness
6mm-500mm
Width
20mm-1000mm
Heat treatment Normalized ; Annealed ; Quenched ; Tempered
Surface condition Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery condition Forged; Hot rolled; Cold drawn
Test Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. 
Payment terms T/T;L/C;/Money gram/ Paypal
Trade terms FOB; CIF; C&F; etc..
Delivery time 30-45 days
Application 8620 alloy steels are used for  Arbors, Bearings, Bushings, Cam Shafts, Differential Pinions, Guide Pins, King Pins, Pistons Pins, Gears, Splined Shafts, Ratchets, Sleeves and other applications where it is helpful to have a steel that can be readily machined and carburized to controlled case depths.
 

 

6. ASTM 8620 Steel Heat Treatment
Annealing
    AISI 8620 steel may be given a full anneal by heat to 820ºC - 850ºC, and hold until temperature is uniform throughout the section and cool in furnace or air cooled.
Tempering
    Tempering of heat treated and water quenched parts of 8620 steels (not carburized) is done at 400 F to 1300 F to improve case toughness with minimal effect on its hardness. This will also reduce the possibility of grinding cracks.
Hardening
    The AISI steel 8620 will be austenitized at around 840°C - 870°C, and oil or water quenched depending upon section size and intricacy. Cool in Air or Oil required.
Normalizing
    1675oF (910oC) and air cool. This is another method of improving machinability in 8620 material; normalizing might also be used prior to case hardening.

 

 

7: Delivery condition

    For hot forged  bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.

    For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.


 
Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel BarsHunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.

Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
Hunan Qilu Industrial Co., Ltd were already engaged in exporting steel for 11 years, could supply a great variety of hot forged, hot rolled and cold drawn Steels,  including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.

Since 2008 year, Hunan Qilu Industrial has the right to export all FORGED STEEL behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.

Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.

Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel BarsThe company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.

Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel Bars
Scm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel BarsScm220 8620 20CrNiMo 1.6523 Forging Steel Bar Structural Alloy Steel BarsHunan Qilu Industrial CO., LTD
Web: qilusteel.en.made-in-china.com 

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