
Based on the product you are currently editing for JAYANT IMPEX on your Add/Edit Products page, here is the technical breakdown for AISI 8640 Alloy Steel Round Bars, Rods, and Rings.
This information is tailored to help you update your Product Description and Specifications to attract high-end industrial buyers.
AISI 8640 is a medium-carbon Nickel-Chromium-Molybdenum alloy steel (often called "Triple Alloy" steel). It is designed for components requiring a high level of toughness and strength. The 0.40% carbon content allows it to be heat-treated to a higher hardness than the 8620 or 8630 grades, making it ideal for heavy-duty structural applications.
| Feature | Details |
| Standard | ASTM A29 / SAE J404 |
| Material Type | Ni-Cr-Mo (Nickel-Chromium-Molybdenum) Alloy Steel |
| Chemical Composition | Nickel (0.40% 0.70%), Chromium (0.40% 0.60%), Molybdenum (0.15% 0.25%) |
| Tensile Strength | $850 - 1000 \text{ MPa}$ (Quenched & Tempered) |
| Yield Strength | $\ge 550 \text{ MPa}$ |
| Hardness | $200 - 240 \text{ HBW}$ (Annealed) |
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