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[F1ANNEX IU.K.

CATEGORY 1 – SPECIAL MATERIALS AND RELATED EQUIPMENTU.K.

[1C] MaterialsU.K.

Technical Notes:U.K.
1.The metal alloys in 1C002 are those containing a higher percentage by weight of the stated metal than of any other element.U.K.
2.‘Stress-rupture life’ should be measured in accordance with ASTM standard E-139 or national equivalents.U.K.
3.‘Low cycle fatigue life’ should be measured in accordance with ASTM standard E-606 ‘Recommended Practice for Constant-Amplitude Low-Cycle Fatigue Testing’ or national equivalents. Testing should be axial with an average stress ratio equal to 1 and a stress-concentration factor (Kt) equal to 1. The average stress ratio is defined as maximum stress minus minimum stress divided by maximum stress.]U.K.