EGMP Forging stock standards guideline

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1 Forging stock standards guideline Issue n 10 FORGING STOCK 30 Microstructure 34 Grain size Air melted (except if δ ferrite or problem 1 per batch) 50 Cleanness/ Inclusion See EN Macrostructure 53 Thermal analysis (b transus temperature) See text of EN Internal (Ni + Co) Remelted Level 3 Level 2 (except if δ ferrite or problem 1 per batch) (unless required by the order) See EN 2950 (unless required by the order or for certain alloys) On forged sample (EN 2957) or sample use for cleanliness Top of the top billet of ingot + Heat treatment (unless required by the order) (unless required by the order, or for certain alloys) Level 3 See EN See EN See EN See EN See EN 2950 See See EN Top of the top billet Capability clause applies See EN See EN 2950 Grade 2 Level 2 See EN See EN Grade 2 Top and bottom of billet See EN Top and bottom capability clause applies Class 5 : D 250 mm Class 4 : D > 250 mm For D > 350 mm To be agreed between manufacturer and purchaser See EN Use EN 3684 See EN Top and bottom Use EN 3684 Class 5 : D 230 mm and all fine grain Class 3 : 230 mm < D 356 mm Class 2 : D > 356 mm See EN Grade 2

2 Forging standards guideline FORGINGS 30 Microstructure 34 Grain size 38 Intergranular corrosion Air melted Remelted (except δ ferrite or problem for first article only) (except δ ferrite or problem for first article only) Level 3 See EN See EN See EN See EN See EN For first article only See EN See EN Cleanness/ Inclusion See EN See EN Macrostructure 61 Internal Grain flow on first article See EN See EN Grain flow on first article See EN For first article only 74 Surface contamination (Ni + Co) Level 2 See EN Production cut up and test ring 1 per batch See EN ( + and test ring 1 per batch) See EN See EN First article + production cut up + test ring (1 per batch) te : Level 3 See EN See EN % See EN 2954 For first article limited to precision forged parts Hydrogen sample peeled from finished surfaces (Frequency given in colum 30) Level 2 See EN First article + production cut up and test ring 1 per batch See EN % See EN 2954 For first article + limited to precision forged parts

3 BAR Air melted Remelted 30 Microstructure (except δ ferrite or problem 1 per batch) (except δ ferrite or problem 1 per batch) 34 Grain size 38 Intergranular corrosion Bar standards guideline Level 3 See EN See EN See EN Cleanness/ Inclusion 51 Macrostructure Issue n Decarburisation 61 Internal See EN Class 4 (Ni + Co) Level 2 See EN See EN See EN See EN See EN Class 4 Level 3 See EN See EN See EN Level 2 See EN See EN See EN See EN

4 Remelted stock standards guideline REMELTED STOCK Mechanical testing Air melted See EN Capability Remelted See EN Capability Level 3 See EN Capability (Ni + Co) Level 2 See EN Capability Level 3 See EN Capability Level 2 See EN Capability

5 CASTING Air melted 30 Microstructure See EN only unless δ ferrite or problem, then 1 per batch Remelted See EN only unless δ ferrite or problem, then 1 per batch Level 3 See EN only (Ni + Co) Level 2 See EN only 34 Grain size 35 Repair Welding Casting standards guideline 61 Internal 74 Surface contamination only See EN See EN See EN only. If necessary See EN See EN See EN only See EN See EN See EN only. If necessary See EN See EN See EN Level 3 only See EN See EN See EN See EN only Level 2 only See EN See EN See EN See EN XX Hydrogen Sample cut from the casting in the delivery condition + production cut up

6 SHEETS AND STRIP Air melted 30 Microstructure except if δ Ferrite or problem 1 per cast Remelted except if δ Ferrite or problem 1 per cast 34 Grain size 38 Intergranular Sheet and strip standard guideline corrosion See EN series steels only) See EN series steels only) See EN Cleanness 59 Decarburisation 61 Internal Category according See EN Category according See EN Capability clause See EN (1 per batch) Cold rolled : thing Hot rolled : Level 3 See EN See EN See EN (Ni + Co) Level 2 See EN See EN See EN Cold rolled : Class 3 thing Hot rolled : 74 Surface contamination Level 3 See EN See EN See EN Level 2 See EN See EN See EN See EN Class 3

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