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Introducing the new Macalloy 640 N/mm2 grade tension rod system. Delivering greater strength, more design flexibility, and the same rigorous quality standards Macalloy is trusted for worldwide.
Enhanced Performance
Macalloy 640 — High-yield threaded bar system offering measurable gains in time, weight and cost versus conventional steel.
Product Range
21 diameters, M10–M120 metric rolled threads.
Macalloy 640 Characteristics
- Minimum Yield Stress 640 N/mm2
- Minimum Ultimate Stress 800 N/mm2
- Minimum Elongation: 19%
Why Upgrade?
Higher-grade steel cuts material and weight, lowers embodied carbon, reduces transport loads and haulage costs, and improves manual-handling safety — backed by reliable, high-quality supply.
Contact us on +44 (0)1909 519 200 or email sales@macalloy.com to discuss the 640 Bar System.