Normas ferro fundido nodular Wilson Luiz Guesser, Dr. Eng. Tupy Fundições - UDESC
Norma Européia - EN 1563
microestrutura predominante NORMA ABNT (NBR 6916/1981) Classe LR mín (Mpa) LE min (Mpa) A - 5d min (%) A título informativo HB microestrutura predominante FE 38012 380 240 17,0 140-180 Ferrítica FE 42012 420 280 12,0 150-200 FE 50007 500 350 7,0 170-240 Ferrítica-perlítica FE 60003 600 400 3,0 210-280 Perlítica FE 70002 700 450 2,0 230-300 FE 80002 800 550 240-312 FE 38017-RI
Grades of Ductile Iron in ASTM A-536-77 Grade UTS (MPa) YS (MPa) Elong (%) Typical Hardness (HB) Typical micro- structure 60-40-18 414 276 18 149-187 Ferrite 65-45-12 448 310 12 170-207 Ferrite + pearlite 80-55-06 552 379 6 187-255 Pearlite + ferrite 100-70-03 690 483 3 217-269 Pearlite 120-90-02 828 621 2 240-300 Tempered martensite
Grades of Ductile Iron in SAE specification J434c Hardness Range Microstructure D4018 Max 170 HB Ferritic D4512 156-217 HB Ferritic-pearlitic D5506 187-255 HB D7003 241-302 HB Pearlitic DQ&T Range as specified martensitic