13877518

Wall Art and Photo Gifts from Mary Evans Picture Library

13877518

Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries

Media ID 32327448

© Aviation Ancestry

VISUAL DESCRIPTION
This is a vintage advertisement or technical data sheet for RR. 77, an aluminum alloy product by Reynolds Tube Co. Ltd. , specifically from their Light Alloy Division and Rolling Mills Ltd. , Birmingham 11. The image features a stress-strain graph that demonstrates the mechanical properties of the material, with annotations highlighting an ultimate tensile strength of over 35 tons per square inch. Below the graph, there's a table listing minimum mechanical properties for various forms of the material (sheet, tube, forgings), with values in terms of tensile strength (30-32 tons/sq. in. ), yield point (27-29 tons/sq. in. ), elongation percentage (10%), and proof stress (26-28 tons/sq. in. ). The bold text "33 Tons Plus!" emphasizes the high-strength quality of this general-purpose structural alloy. The brand name "Hiduminium" refers to high-duty aluminum alloys developed by High Duty Alloys Ltd. , which were known for their use in automotive and aerospace applications due to their favorable strength-to-weight ratio. At the bottom left corner is information about Reynolds Tube Co. Ltd. , indicating it as part of High Duty Alloys Group with specific gravity mentioned as 2. 8 for this alloy type. Please note that while I can describe what's visible in this image based on its content, any further details such as historical context or current relevance would require additional research beyond visual analysis.

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