Standard Test, Method for Measurement of Fatigue Crack Growth Rates; ASTM E813-89 Test Method for JIC, a Measure of Fracture Toughness; ASTM G53-93 Standard Practice for Operating Light and Water – Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of non-metallic materials. Normas BSI (2) BS 5045: Part 1 (1982) Transportable Gas Containers – Specification for Seamless Steel Gas Containers Above 0,5 litre Water Capacity; BS 7448-91: Fracture Mechanics Toughness Tests Part I – Method for Determination of KIC, Critical COD and Critical J Values of metallic materials of BS PD 6493–1991. Guidance and Methods for Assessing the A Acceptability of Flaws in Fusion Welded Structures; Metallic Materials. EN 13322-2 2003 Transportable gas cylinders – Refillable welded steel gas cylinders – Design and construction – Part 2: Stainless steel EN ISO 5817 2003 Arc-welded joints in steel; guidance on quality levels for imperfections Normas ISO (3) ISO 148-1983 Charpy Impact Test (v-notch); ISO 306-1987