20.uji impact 1
TRANSCRIPT
Attachment 2
TABLE IMPACT OBSERVATION TEST
a) Raw Material
No. spesimensudut energi sudut W Ao Kcos α terpasang (J) cos β (J) mm2 (J/mm2)
1 150 89.56 87 44.064 80 0.55082 150 89.56 85 45.744 80 0.57183 150 89.56 87 44.064 80 0.55084 150 89.56 87 44.064 80 0.5508
Average 0.556
b) Quenching
No. spesimensudut energi sudut W Ao Kcos α terpasang (J) cos β (J) mm2 (J/mm2)
1 150 89.56 77 52.32 80 0.6542 150 89.56 70 57.984 80 0.72483 150 89.56 70 57.984 80 0.72484 150 89.56 76 53.136 80 0.6642
Average 0.6919
c) Tempering
No. spesimensudut energi sudut W Ao K
cos α terpasang (J) cos β (J) mm2 (J/mm2)
1 150 89.56 10 88.848 80 1.11062 150 89.56 10 88.848 80 1.11063 150 89.56 11 88.656 80 1.10824 150 89.56 8 89.088 80 1.1136
Average 1.1107
Keterangan :1. impact charpy