8620 Steel Forgings
Custom 4340 steel forgings produced to customer drawings for heavy-duty shafts, forged bars, rings, blocks and high-load industrial components. Available with heat treatment, rough machining, ultrasonic testing and complete inspection documentation.
- Customer drawings
- Heat treatment
- Inspection reports
Built around the
drawing.
Controlled through
delivery.
Every custom forging begins with a technical review of material, geometry, heat treatment, machining allowance and inspection requirements. The production route is defined before quotation and confirmed against the project specification.
01
Produced to drawings, samples or technical specifications.
02
Forging, heat treatment, machining and inspection.
03
Material, dimensional and test reports supplied.
PRODUCT FORMS
8620 Steel Forging Forms
Forged Shafts
Transmission shafts, pinion shafts and stepped shafts supplied with machining allowance for subsequent processing.
Forged Bars
Round and square forged bars for machining into gears, shafts, pins and other load-bearing components.
Forged Rings
Forged and rolled ring blanks for gears, bearing components, sleeves and rotating equipment.
Forged Blocks
Rectangular and custom forged blocks for tooling, machinery components and drawing-based production.
Need a different 8620 forging geometry? Send your drawing and required dimensions for production review.
8620 Steel Forging Overview
AISI 8620 is a low-carbon nickel-chromium-molybdenum alloy steel commonly selected for carburized components requiring a wear-resistant surface and a tough, load-bearing core.
The material is frequently used for gears, pinions, shafts, bushings and other components exposed to repeated contact, impact and fatigue loading. Its final performance depends on section size, carburizing depth, quenching, tempering and the specified mechanical-property requirements.
We supply custom 8620 steel forgings according to customer drawings and technical specifications. Production requirements are reviewed based on forging dimensions, unit weight, machining allowance, heat-treatment condition, testing scope and documentation requirements.
Additional information
| Material Grade | AISI / SAE 8620 |
|---|---|
| UNS DESIGNATION | UNS G86200 |
| Steel Type | Nickel-Chromium-Molybdenum Case-Hardening Alloy Steel |
| Forging Process | Open Die Forging, Ring Rolling |
| Product Forms | Forged Shafts, Forged Bars, Forged Rings, Forged Blocks |
| Supply Condition | As Forged, Annealed, Normalized, Carburized and Hardened as Specified |
| Machining Condition | As Forged, Rough Machined, Pre-machined |
| Testing Available | Chemical Analysis, Mechanical Testing, Ultrasonic Testing, Magnetic Particle Testing, Dimensional Inspection |
| Production Basis | Customer Drawing, Custom Specification |
MATERIAL DATA
8620 Steel Forging Technical Data
The following values provide a general reference for AISI/SAE 8620 steel. Final chemical composition and mechanical-property requirements must follow the applicable material standard, heat-treatment condition, section size and customer specification.
Chemical Composition
| Element | Carbon, C | Manganese, Mn | Silicon, Si | Chromium, Cr | Nickel, Ni | Molybdenum, Mo | Phosphorus, P | Sulfur, S |
|---|---|---|---|---|---|---|---|---|
|
AISI 8620 |
0.18–0.23 |
0.40–0.60 |
0.15–0.35 |
0.70-0.90 |
0.40–0.70 |
0.15–0.25 |
0.035 max. |
0.040 max. |
Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Impact Energy | Brinell Hardness |
|---|---|---|---|---|---|
|
Typical Reference |
≥635 MPa |
≥360 MPa |
≥26% |
≥98 J Izod |
183 HB |
Applications of 8620 Steel Forgings
8620 steel forgings are commonly selected for components requiring a combination of surface wear resistance, core toughness and dependable performance under repeated mechanical loading.
Gears and Pinions
Forged gear blanks, pinions and transmission components intended for subsequent machining and case hardening.
Shafts and Spindles
Drive shafts, pinion shafts, spindles and stepped shafts used in power-transmission and rotating equipment.
Bushings and Sleeves
Forged sleeves, bushings, hubs and ring-shaped components requiring a durable working surface and tough supporting core.
Heavy-Duty Drive Components
Load-bearing drivetrain and machinery components exposed to contact stress, repeated loading and wear.
MANUFACTURING SCOPE
FORGING AND PROCESSING CAPABILITIES
Actual dimensional and weight limits are confirmed after drawing review.
01
Manufacturing method
Open die forging
02
Materials
Carbon, alloy & stainless steels
03
Heat Treatment
Normalizing, annealing, Q&T
04
Machining
Rough & finish machining
05
Testing
UT, MT, mechanical & dimensional
06
Production basis
Customer drawings & specifications
From drawing review to delivery
01
Drawing, material, quantity, tolerances and standards.
02
Production route, material, machining allowance and lead time.
03
Coordinate manufacturing stages and required quality records.
04
Reports, export packing and shipment support.
Records that travel
with the forging.
Inspection requirements are defined during quotation—not added as an afterthought. Available documentation is confirmed against the project specification before production.
Material certificates & heat traceability
✓
Dimensional inspection report
✓
Ultrasonic / magnetic particle report
✓
Mechanical properties report
✓
Final documentation package
✓
Related Alloy Steel Forgings
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Have a drawing ready?
Send your drawing, material grade, dimensions, quantity and inspection requirements for manufacturing review.
MATERIALS WE FORGE
Carbon Steel Forgings
Custom carbon steel forgings for shafts, rings, discs, blocks and other heavy-duty industrial components.
Alloy Steel Forgings
High-strength alloy steel forgings for machinery, transmission systems and demanding service conditions.
Tool Steel Forgings
Custom tool steel forgings for dies, molds, industrial tooling and other high-load applications.
Stainless Steel Forgings
Corrosion-resistant forged components produced according to customer drawings and specifications.