Product Specifications
| Prod Model: |
8620 |
| Markets: |
North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
| Similar Grades: |
DIN 1.6523, Sncm220, 20nicrmo2-2 |
| Size Range: |
Diameter: 20-480mm |
| Delivery Condition: |
Annealed, Qunched and Tempered |
| Surface Condition: |
Grinded, Peeled, Polished, Rough Turned |
| Quality Standard: |
ASTM-A29 |
| Type: |
Carbon Steel Bar |
| Standard: |
ASTM |
| Composition: |
Ferrous Steel Scrap |
| Special Use: |
Mold Steel |
| Application: |
Structural Steel Bar |
| Steel Grade: |
High Quality Steel |
| Technique: |
Hot Rolled, Forged |
| Shape: |
Round, Square, Flat |
| Surface Treatment: |
Grinded, Peeled, Polished, Rough Turned |
Product Description
Similar Grades:
DIN 1.6523, SNCM220, 20NiCrMo2-2
Shape:
Round, Flat, Square.
Size Range:
| | Diameter(mm) | Thickness (mm) | Width (mm) | Length(mm) |
| Round | 20-480 | - | - | 2000-5800 |
| Square | 20-480 | - | - | 2000-5800 |
| flat | - | 20-50 | 80-600 | 2000-5800 |
Steel-making Condition:
EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery Condition:
Annealed , Quenched + Tempered
Surface Condition:
Black, Grinded, Peeled, Rough turned, Polished
Features:
1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 1 Ton
| Packing details | In seaworthy packing, as your requirement. |
| Delivery details | within 30-50 days |
Chemical Composition:
C | Mn | P | S | Si | Cr | Mo | Ni |
| 0.18-0.23 | 0.70-0.90 | 0.030max | 0.040max | 0.15-0.35 | 0.40-0.60 | 0.15-0.25 | 0.40-0.70 |
Heat Treatment:
This 8620 gear steel may be hardened by heating to 1500F followed by a water quench. Carburize at 1650F to 1700F in an appropriate carburizing medium and oil quench to harden. Improved carburized case and core properties can be obtained by furnace cooling from carburizing at 1650F-1700F and then reheating to 1575F.
Annealing:
8620 gear steel may be given a full anneal at 1550F and slow cooling at not more than 50F per hour down to 850F. From there it may be air cooled.
Hardening:
Hardening is done by oil quench from 1675F. Carburizing is accomplished at the same 1650F-1700F range in a carburizing "pack" or environment, followed by oil quench for thin sections or a furnace cool for heavier (over 3/4″) sections. Following carburizing of heavy sections a reheat at 1575F will enhance both case and core properties of the alloy.
Tempering:
Tempering of carburized parts is done at 250F-300F and this will result in the alloy having a core strength of approximately 135 ksi minimum with Rockwell C case hardness of 90. Tempering of heat treated and water quenched parts (not carburized) is done at 400F-1300F with greater hardness the lower the tempering temperature.
Machinability:
Machining is done prior to carburizing to within as close a tolerance as possible. Finish machining, after heat treatment and/or carburizing, should be at a minimum so as not to impair the hardened case of the part. Machining may be done by conventional means prior to heat treatment - after carburizing machining is usually limited to grinding.
Forming:
Forming characteristics of 8620 gear steel are good in the annealed condition.
Welding:
The 8620 gear steel may be welded by conventional methods, usually gas or arc welding. Preheating at 400F is beneficial and subsequent heating after welding is recommended - consult the approved weld procedure for the method used.
Forging:
The alloy may be forged at 2200F down to 1800F prior to the hardening heat treatment or carburizing.
Hot Working:
Hot working may be accomplished prior to hardening or carburizing. Consult the alloy supplier for information as to temperatures.
Cold Working:
The alloy may be cold worked in the annealed condition by conventional methods. Cold working, as with machining, should be done to as close a tolerance as possible before heat treatment or carburizing.
Introduction:
8620 gear steel is a low carbon nickel chromium molybdenum alloy steel. And it is a low cost steel with good carburized properties. The nickel content contributes to case toughness at high strength with above average core toughness. The chromium and molybdenum support the proper formation of carbides resulting in good surface hardness and wear. It is the most widely used carburizing alloy.
Applications:
When hardened and formed, 8620 gear steel may be used to produce hard wearing machine parts in a wide variety of industries. With its combination of elements along with the ease with which it may be processed, 8620 gear steel is a good choice for a variety of applications. Carburized 8620 gear steel is strong and durable and as a result is preferred in certain manufacturing applications. It is used to make a wide range of gears, crankshafts, gear rings, pinions, piston pins, cams, gauges, tie bars, collets, bushings and bolting as well as hand tools and a multitude of machinery parts and components. Structural parts such as gears, pinions, spline shafts, pins and a variety of other important applications requiring a hard wear surface and a ductile core.
Contact Information:
FUSHUN SPECIAL STEEL CO., LTD.
Tel: 89-0731-89903933(CHANGSHA, Office)
Fax: +86-0731-89853933
Mobile: +86-18773142293
Website: www.fushunspecialsteel.com
To expand the international market and get the advantages of markets in Hong Kong, We, FUSHUN SPECIAL STEEL Co., Ltd, were established by Huangshi Chengquan Group in 2014.
Huangshi Chengquan Group consists of the following parts:
Ezhou Liufan Chengquan Forging & Casting Factory, established in 1995, covers an area of 10000 square meters. The production capacity is more than 10000 tons per year.
Foshan Shiyong Tool Steel Sales Co., Ltd. Founded in 1998, covers an area of 3000 square meters, annual inventory of 15000 tons.
Provide with the following services: Saw Cutting, Mold, Machining.
Based on its manufacturing capacity, We, Fushun Special Steel Co., Ltd., are engaged in the import and export of iron alloy steel and other special steel.
Export:
Our own products:
Tool Steel: (carbon tool steel, alloy tool steel, high-speed tool steel),
Die steel: (cold work die steel, hot work die steel, plastic die steel)
And sale: Structural steel(carbon structural steel, alloy structural steel)
Shape: Round, square, flat, heavy thickness plate, heavy wall thickness steel tube.
Stainless steel, Bearing steel, Spring steel, Cold Heading Steel, Forgings
Imports: Ferroalloy (chromium iron, nickel iron, vanadium iron, molybdenum iron, etc. )
To provide high quality services for global customers, We insist in the follow principles:
Best price: Try our best to give the lowest price
Top quality: Fake a penalty ten
Fast delivery: Timely delivery
One stop shop: With 20 year business experience, we know steel sources in China, and we can provide a one stop shop service.
After service: Responsive, quality objection don't shuffle.
