Thabiso Steel stands out as a premier manufacturer and supplier of top-notch alloy steel products, proudly based in Cape Town, South Africa. With a keen emphasis on precision, durability, and keeping customers happy, Thabiso Steel specializes in Alloy Steel AISI 8620 Bars, catering to a diverse array of industries. Renowned for their metallurgical expertise and dependable supply chains, they provide steel bars that comply with both local and international standards. Whether it’s for automotive, engineering, or industrial uses, Thabiso Steel guarantees high-quality materials customized to your needs. Their dedication to excellence has established them as a reliable partner in the South African steel market and beyond.
Alloy Steel AISI 8620 is a low-alloy steel that features nickel (0.40–0.70%), chromium (0.40–0.60%), and molybdenum (0.15–0.25%) as its main alloying elements. With a carbon content of about 0.18–0.23%, it’s perfect for carburizing and case hardening. This steel offers a robust core and a hard surface, making it ideal for components that need to resist wear. Its mechanical properties include a tensile strength of roughly 860 MPa, yield strength of 580 MPa, and impressive toughness. Plus, it boasts good machinability and weldability, especially after undergoing heat treatment processes like carburizing and quenching.
| AISI 8620 Steel Round Bar Plate Sheet Supply Range | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Specification | Surface | |||||||||||||||||
| Round Bar | Diameter: 16mm – 800mm; length: 2000mm-5000mm Other specifications can be customized. | Black Surface/Bright Surface/ Grinded/Peeled/Turned | |||||||||||||||||
| Sheet/Plate/Slab | Thickness: 16-800mm; width: 205mm-810mm; length: 2000mm-5000mm Other specifications can be customized. | Black Surface/Bright Surface/ Grinded/Peeled/Turned | |||||||||||||||||
| STAND | C(%) | Mn(%) | P(%) | S(%) | Si(%) | Cr(%) | Mo(%) | Ni(%) |
|---|---|---|---|---|---|---|---|---|
| ASTM A29/A29M-05 | 0.18-0.23 | 0.70-0.90 | ≤0.035 | ≤0.040 | 0.15-0.35 | 0.40-0.60 | 0.15-0.25 | 0.40-0.70 |
| EN 10084-2008 | 0.17-0.23 | 0.65-0.95 | ≤0.025 | ≤0.035 | 0.40 | 0.35-0.70 | 0.15-0.25 | 0.40-0.70 |
| JIS G4053-2008 | 0.17-0.23 | 0.60-0.90 | Max0.030 | Max0.030 | 0.15-0.35 | 0.40-0.60 | 0.15-0.25 | 0.40-0.70 |
| ISO 683/11:1987 | 0.17-0.23 | 0.65-0.95 | ≤0.035 | ≤0.035 | 0.15-0.40 | 0.30-0.65 | 0.15-0.25 | 0.40-0.70 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 530 MPa | 76900 psi |
| Yield strength | 385 MPa | 55800 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Izod Impact | 115 J | 84.8 ft.lb |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B (converted from Brinell hardness) | 80 | 80 |
| Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
| Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel) | 65 | 65 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Country | USA | Germany/South Africa/France | JAPAN | ISO |
|---|---|---|---|---|
| Standard | ASTM A29/A29M-05 | EN 10084-2008 | JIS G4053-2008 | ISO 683/11:1987 |
| Grades | 8620 | 20NiCrMo2-2 (1.6523) | SNCM220 | 20NiCrMo2 |
Alloy Steel AISI 8620 Bars find extensive use in industries that require components with a tough core and high surface hardness. Common applications include automotive parts such as gears, crankshafts, camshafts, and drive shafts, where wear resistance and fatigue strength are essential. In the engineering and manufacturing fields, it’s utilized for bushings, pins, and high-load bearings. Its capacity to be carburized makes it perfect for parts that face surface wear while still maintaining internal ductility. Thanks to its remarkable balance of strength, toughness, and machinability, AISI 8620 is a go-to material for demanding mechanical components in both light and heavy-duty equipment.
ThabisoSteel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cape Town, South Africa.
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