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Long Spring Steel Bar , Forged Round Bar 130 - 1600mm ASTM 8620 / EN 21NiCrMo2 1.6523

Categories Forged Steel Bar
Brand Name: UST
Model Number: ASTM 8620
Certification: ISO 9001:2008
Place of Origin: MAINLAND CHINA
MOQ: 3 Metric tons
Price: USD 800-2000 / Metric Ton
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 Metric Tons per Month
Delivery Time: 15-35 days
Packaging Details: In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request
Matrial: Spring Steel
Standard: GB, ASTM, DIN,JIS
Grade: 21NiCrMo2 1.6523
Diameter: 4-1600mm
Length: Below 16 meters
Shape: Round bar
Techniques: Cold drawn; Hot rolled; Cold rolled; Forged
Surface: Black, Bright, Polished, Peeled, or upon request
Ultrasonic Test: 100% UT Passed
Processing: Annealed or Quenched and tempered provided
End: Beveled, plain end as required
Quality Inspection: SGS, BV etc.
Service: Cutting service and 3rd party inspection is provided
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    Long Spring Steel Bar , Forged Round Bar 130 - 1600mm ASTM 8620 / EN 21NiCrMo2 1.6523


    ASTM 8620 / EN 21NiCrMo2 1.6523 Spring Steel Bar / Rod Forged Dia 130-1600mm


    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.

    Steel 8620 is suited for applications which require a combination of toughness and wear resistance. This grade is commonly supplied in round bar.


    APPLICATIONS


    AISI 8620 steel material is used extensively by all industry sectors for light to medium stressed components and shafts requiring high surface wear resistance with reasonable core strength and impact properties.

    Typical applications are: 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.

    SUPPLY RANGE OF AISI 8620 ALLOY STEEL


    -Dimension: Diameter 4-1600 mm, any length below 16 meters

    -Delivery Conditions:

    Cold drawn: 4-100 mm

    Peeled: 30-160 mm

    Grinded: 4- 600 mm

    Turned: 130-1200 mm

    Hot rolled: 12-320 mm

    Hot forged: 130-1600 mm

    -EAF+(ESR) or EAF+LF+VD+(ESR)

    -HOT rolled; Cold rolled; Forged; Cold Drawn

    -Heat Treatment: Untreated, Annealing, N+T, Q+T

    -Smelting: EAF+LF+VD (+ESR)

    -Surface Finish: Black, Rough Machined, Peeled, Turned or upon request

    -UT 100% passed

    -Cutting service provided

    -Third Party inspection is acceptable (SGS, BV etc.)



    SAE 8620 Steel Equivalency


    CountryUSADINBSBSJapan
    StandardASTM A29DIN 1654EN 10084BS 970JIS G4103
    Grades86201.6523/
    21NiCrMo2
    1.6523/
    20NiCrMo2-2
    805M20SNCM220

    ASTM 8620 Steels & Equilvalents Chemical Composition


    StandardGradeCMnPSSiNiCrMo
    ASTM A2986200.18-0.230.7-0.90.0350.0400.15-0.350.4-0.70.4-0.60.15-0.25
    DIN 16541.6523/
    21NiCrMo2
    0.17-0.230.65-0.950.0350.0350.400.4-0.70.4-0.70.15-0.25
    EN 100841.6523/
    20NiCrMo2-2
    0.17-0.230.65-0.950.0250.0350.400.4-0.70.35-0.700.15-0.25
    JIS G4103SNCM2200.17-0.230.6-0.90.0300.0300.15-0.350.4-0.70.4-0.650.15-0.3
    BS 970805M200.17-0.230.6-0.950.0400.0500.1-0.40.35-0.750.35-0.650.15-0.25

    AISI 8620 Steel Mechanical properties


    PropertiesMetricImperial
    Tensile strength530 MPa76900 psi
    Yield strength385 MPa55800 psi
    Elastic modulus190-210 GPa27557-30458 ksi
    Bulk modulus (typical for steel)140 GPa20300 ksi
    Shear modulus (typical for steel)80 GPa11600 ksi
    Poisson’s ratio0.27-0.300.27-0.30
    Izod Impact115 J84.8 ft.lb
    Hardness, Brinell149149
    Hardness, Knoop (converted from Brinell hardness)169169
    Hardness, Rockwell B (converted from Brinell hardness)8080
    Hardness, Vickers (converted from Brinell hardness)155155
    Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel)6565

    PROCESSING


    Forging of Material 8620 Steel

    AISI 8620 alloy steel is forged at a start temperature of around 2250ºF (1230ºC) down to approximately 1700ºF(925ºC.) prior to the hardening heat treatment or carburizing. The alloy is air cooled after forging.


    ASTM 8620 Steel Heat Treatment

    • Annealing

    AISI 8620 steel may be given a full anneal by heat to 820℃ – 850℃, 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.


    Machinability of SAE 8620 Steel

    The 8620 alloy steel is readily machined 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.


    Welding of 8620 Materials

    The alloy 8620 may be welded as rolled condition by conventional methods, usually gas or arc welding. Preheating at 400 F is beneficial and subsequent heating after welding is recommended – consult the approved weld procedure for the method used. However, welding in the case hardened or through hardened condition is not recommended.


    What we can offer?

    -We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

    -Machining and heat treatment are available.

    -Also, we advise you in choosing the right materials.


    Shape Available

    • Solid round bar
    • Flat bar
    • Square bar
    • Hexagon bar
    • Block
    • Plate
    • Sheet
    • Wire rod
    • Strip

    Our Advantages

    • High mechanical property and quenching, enable the surface share equal hardness after deal with it
    • Good polishing and low roughness
    • Making the heat-treatment to harden condition before using it
    • Competitive price
    • Fast production lead-time
    • All the material are inspected with 3 times to meet the highly standards
    • Pure steel quality & stable quality to be guarantee

    OUR MAIN PRODUCTS ARE LISTED AS BELOW



    Notes:

    Available Size:
    -Round: Dia. 4-1600 mm
    -Flat: T. 10-120 mm x W. 60-810 mm
    -Block: T. 80-1200 mm x W. 100-1600 mm


    PAYMENT AND SHIPPING


    1. Both T/T and L/C will be acceptable

    2. Trade Terms: FOB, CIF, CFR

    3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

    4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples


    COMPANY INFORMATION


    Shanghai Unite Steel Trading Co., Ltd

    We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

    In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

    What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!


    FAQ


    Q: Are you a manufacturer or merely a trader?
    A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

    Q: How do you guarantee the quality of your product?
    A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

    Q: Delivery time?
    A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

    Q: What is the payment term?
    A: T/T or L/C.

    Q: Can we visit your company and factory?
    A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.


    Quality Long Spring Steel Bar , Forged Round Bar 130 - 1600mm ASTM 8620 / EN 21NiCrMo2 1.6523 for sale
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