8640 Round Bar: Material Profile
8640 offers through-hardening capability and balanced mechanical properties for moderate and heavy sections.
Specify the annealed, normalized, or quenched-and-tempered condition along with hardness, tensile properties, straightness, and testing.
Purchase to the controlling ASTM, SAE, AMS, or customer specification. Section size, supply condition, mechanical properties, surface limits, testing, and heat/lot traceability can change the acceptable material and processing route.
Key Characteristics
- Good through-hardening
- High strength
- Good toughness
- Good fatigue resistance
Common Applications
- Shafts and axles
- Gears and couplings
- Heavy-equipment parts
- Forged industrial components
Specification Requirements
Identify the governing specification and revision, product form, section size, condition, mechanical properties, testing, and certification requirements. The purchase specification and material certification govern the order.
Request Pricing for 8640 Round Bar
We quote 8640 for manufacturers and commercial buyers. Requirements of 3,000–10,000 lb are welcome, along with multi-ton and truckload programs.
We are not a retail metal store. Small personal-use, typical single-bar, and cut-piece orders are generally not a fit. The material field is prefilled and remains editable; add the specification, size, condition, total weight, processing, testing, required date, and ship-to location.
