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 2157-2. 51 Macrostructure 53 Thermal analysis (b transus temperature) See text of EN 4235-3 61 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 2858-2 See EN 2858-2 See EN 2157-2. See EN 2860-2 See EN 2950 See 4235-3 See EN 2157-2 Top of the top billet Capability clause applies See EN 2860-2 See EN 2950 Grade 2 Level 2 See EN 2858-2 See EN 2858-2 Grade 2 Top and bottom of billet See EN 2858-2 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 2860-2 Use EN 3684 See EN 2858-2 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 2858-2 Grade 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 2860-3 See EN 2157-3 See EN 2157-3 See EN 2157-3 See EN 2157-3 For first article only See EN 2002-8 See EN 2860-3 50 Cleanness/ Inclusion See EN 2157-3 See EN 2157-3 51 Macrostructure 61 Internal Grain flow on first article See EN 2157-3 See EN 2157-3 Grain flow on first article See EN 2860-3 For first article only 74 Surface contamination (Ni + Co) Level 2 See EN 2860-3 Production cut up and test ring 1 per batch See EN 2002-8 ( + and test ring 1 per batch) See EN 2860-3 See EN 2860-3 First article + production cut up + test ring (1 per batch) te : Level 3 See EN 2858-3 See EN 2858-3 100 % 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 2858-3 First article + production cut up and test ring 1 per batch See EN 2858-3 100 % See EN 2954 For first article + limited to precision forged parts
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 3235-3 See EN 3235-3 See EN 3235-3 50 Cleanness/ Inclusion 51 Macrostructure Issue n 10 59 Decarburisation 61 Internal See EN 3235-3 Class 4 (Ni + Co) Level 2 See EN 3235-3 See EN 3235-3 See EN 3235-3 See EN 3235-3 See EN 3235-3 Class 4 Level 3 See EN 3544-3 See EN 3544-3 See EN 3544-3 Level 2 See EN 3544-3 See EN 3544-3 See EN 3544-3 See EN 3544-3
Remelted stock standards guideline REMELTED STOCK Mechanical testing Air melted See EN 2103-2 Capability Remelted See EN 2103-2 Capability Level 3 See EN 2103-2 Capability (Ni + Co) Level 2 See EN 2103-2 Capability Level 3 See EN 2545-2 Capability Level 2 See EN 2545-2 Capability
CASTING Air melted 30 Microstructure See EN 2103-3 only unless δ ferrite or problem, then 1 per batch Remelted See EN 2103-3 only unless δ ferrite or problem, then 1 per batch Level 3 See EN 2103-3 only (Ni + Co) Level 2 See EN 2103-3 only 34 Grain size 35 Repair Welding Casting standards guideline 61 Internal 74 Surface contamination only See EN 2103-3 See EN 2103-3 See EN 2103-3 only. If necessary See EN 2103-3 See EN 2103-3 See EN 2103-3 only See EN 2103-3 See EN 2103-3 See EN 2103-3 only. If necessary See EN 2103-3 See EN 2103-3 See EN 2103-3 Level 3 only See EN 2545-3 See EN 2545-3 See EN 2545-3 See EN 2545-3 only Level 2 only See EN 2545-3 See EN 2545-3 See EN 2545-3 See EN 2545-3 + XX Hydrogen Sample cut from the casting in the delivery condition + production cut up
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 4235-2 series steels only) See EN 4235-2 series steels only) See EN 4235-2 50 Cleanness 59 Decarburisation 61 Internal Category according See EN 4235-2 Category according See EN 4235-2 Capability clause See EN 4235-2 (1 per batch) Cold rolled : thing Hot rolled : Level 3 See EN 3235-2 See EN 3235-2 See EN 3235-2 (Ni + Co) Level 2 See EN 3235-2 See EN 3235-2 See EN 3235-2 Cold rolled : Class 3 thing Hot rolled : 74 Surface contamination Level 3 See EN 3544-2 See EN 3544-2 See EN 3544-2 Level 2 See EN 3544-2 See EN 3544-2 See EN 3544-2 See EN 3544-2 Class 3