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China factory - JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

  • China,Wuxi ,Jiangsu
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  3. Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good
China Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good
China Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good

  1. China Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good

Polished Surface SAE 8620 Alloy Steel Round Bar with High Hardenability and Good

  1. MOQ： 1 Ton
  2. Price： US $720-1,350 / Ton
  3. Get Latest Price
Model NO. 8620
Surface Treatment Polished
Specification OD 6-630mm
Production Capacity 500tons
Chemical Composition C 0.20
Chemical Composition Si max. 0.40
Chemical Composition Mn 0.80
Chemical Composition Cr 0.53
Chemical Composition Mo 0.20
Chemical Composition Ni 0.55
Modulus of Elasticity 210 x 10^3 N/mm2
Density 7.86 g/cm3
Tensile Strength ≥980 MPa
Yield Strength ≥785 MPa
Elongation ≥9%

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  1. Product Details
  2. Company Details

Product Specification

Model NO. 8620 Surface Treatment Polished
Specification OD 6-630mm Production Capacity 500tons
Chemical Composition C 0.20 Chemical Composition Si max. 0.40
Chemical Composition Mn 0.80 Chemical Composition Cr 0.53
Chemical Composition Mo 0.20 Chemical Composition Ni 0.55
Modulus of Elasticity 210 x 10^3 N/mm2 Density 7.86 g/cm3
Tensile Strength ≥980 MPa Yield Strength ≥785 MPa
Elongation ≥9%
High Light Polished Surface Alloy Steel Round Bar ，High Hardenability SAE 8620 Steel Bar ，Good Weldability 8620 Alloy Steel Rod
SAE 8620H Alloy Steel Round Bar
SAE 8620 is an alloy construction steel known for its excellent hardenability, good weldability, and superior machinability. This low carbon nickel chromium molybdenum alloy offers outstanding carburized properties and formability, making it the most widely used carburizing alloy in various industries.
Key Features
  • Excellent machinability performance
  • Superior cold strain plasticity
  • Good weldability characteristics
  • High hardenability without fragility after tempering
International Standards
Designation Brand Name Ravne No. Mat. No. DIN EN AISI
20NCD2 769 1.6523 21NiCrMo2 20NiCrMo2 8620 8620
Chemical Composition
Standard Composition (weight %)
C Si Mn Cr Mo Ni V W Others
0.20 max. 0.40 0.80 0.53 0.20 0.55 - - -
Chinese Standard 20CrNiMo Composition
Grades C Si Mn P S Cr Mo Cu Ni
20CrNiMo 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
Heat Treatment: Quenching at 850°C (oil), Tempering at 200°C (air)
Property Value
Tensile Strength σb (MPa) ≥980 (100)
Yield Strength σs (MPa) ≥785 (80)
Elongation δ5 (%) ≥9
Reduction of Area ψ (%) ≥40
Impact Energy Akv (J) ≥47
Physical Properties
Property Value
Modulus of Elasticity [10³ x N/mm²] 210
Density [g/cm³] 7.86
Heat Treatment Guidelines
Treatment Temperature Cooling
Case Hardening 880-980°C Oil (water), hot bath 160-250°C
Carburising 880-980°C Oil (water), hot bath 160-250°C
Direct Hardening 880-980°C Oil, hot bath 160-250°C
Core Refining 860-900°C Oil, hot bath 160-250°C
Core Refining 780-820°C Oil, hot bath 160-250°C
Tempering 150-200°C Air
Hardenability Data
Distance From Quenched End (mm) 1.5 3 5 7 9 11 13 15 20 25 30 35 40
H max. 49 48 45 42 36 33 31 30 27 25 24 24 23
H min. 41 37 31 25 22 20 - - - - - - -
Manufacturing Processes
Forging
Hot forming temperature: 1150-850°C
Machinability
Machining is performed prior to carburizing to achieve close tolerances. After heat treatment, finish machining is minimized to preserve the hardened case, typically limited to grinding operations.
Welding
Suitable for conventional welding methods (gas or arc). Preheating at 200°C is recommended, followed by post-weld heating according to approved procedures.
Cold Working
Cold working is performed in the annealed condition using conventional methods, completed to close tolerances before heat treatment.
Applications
Widely used in transmission systems, tractor motors, and automotive components. Ideal for carburized gears, pinions, shafts, bearings, piston rings, ring gears, crankshafts, and other applications requiring hard carburized cases with tough cores.
Available Stock Sizes
Product Form Diameter Range
Round Bar 12-380mm
Material Conditions & Forms
Available in various forms including round bars, flat bars, plates, and blocks. Conditions range from pre-hardened, hot rolled, annealed, quenched and tempered to surface finishes including black, pre-machined, grinding, and polished.
Quality Assurance
Government Certified Quality: All materials sourced directly from certified steel manufacturers to ensure consistent quality and performance.
Our Services
  • Quality special steel for all industrial applications
  • Flexible order quantities with fast shipping
  • Comprehensive inventory of specialty steels
  • Value-added services: metal cutting, sizing, machining, heat treatment
  • Sawing services for small or large quantities
  • Excellent customer service and support
Product Images
SAE 8620 Alloy Steel Round Bar inventory SAE 8620 steel bar close-up view 8620 alloy steel material stock Manufactured 8620 steel components 8620 steel bar quality inspection SAE 8620 alloy steel applications
The information presented represents typical or average values and is not a guarantee of maximum or minimum specifications. Applications suggested are for illustrative purposes only. Continuous improvement of our quality management system is certified in accordance with ISO 9001 standards.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Distributor/Wholesaler,Exporter

  • Total Annual:

    >1000000

  • Employee Number:

    >100

  • Ecer Certification：

    Verified Supplier

Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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Get in touch with us

  • Reach Us
  • JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
  • No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
  • https://www.stainless-strips.com/

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