Hobson technical document
Stainless Steel Threaded Rod Properties: Class 50, 70 and 80 Yield and Breaking Loads
Hobson's four-page technical data sheet of stainless steel allthread (threaded rod) properties. For each size from M3 to M36 it gives the pitch and stress area, and the minimum 0.2% yield stress, minimum tensile stress, minimum yield load and breaking load for property class 50, 70 and 80, and Neptune Rod.
What this covers
- Minimum yield stress
- Minimum tensile stress
- Minimum yield load
- Breaking load
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- Covers sizes M3 to M36, with pitch and stress area for each (for example M12 1.75mm pitch, 84.3mm²).
- Minimum 0.2% yield stress: class 50 210 MPa, class 70 450 MPa, class 80 600 MPa, the same at every size.
- Minimum tensile stress: class 50 500 MPa, class 70 700 MPa, class 80 800 MPa.
- Neptune Rod has the same figures as class 80.
- M12: minimum yield load 17.7kN (class 50), 37.9kN (class 70), 50.6kN (class 80); breaking load 42.2kN, 59.0kN and 67.4kN.
- M20: minimum yield load 51.5kN, 110.3kN and 147.0kN; breaking load 122.5kN, 171.5kN and 196.0kN. These are material properties, not working loads.
Who it helps: Engineers and fabricators choosing a stainless threaded rod class.
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This document is published by Hobson Engineering, who supply this range to us. We show it here in full so you can read it next to the product; the summary above is ours. Read it on this page or download the PDF. For the most current version, ask us.