Mechanicals
(UR) Mechanical Properties
  The machinability of UR31 and 34 is equivalent to C37700. Because UR has higher content of copper than C36000 and C37700 and a special heat treatment is applied to it, the strength is about 10% less than them but it has good ductility. Compared with C83600, the strength is more than 20%.
   
 
Alloy Products Size Temper or finish Hardness
HRB		 T/S
(N/mm2)		 E/L
(％)		 Y/S
(N/mm2)		 Machinability
index
total torque thrust
UR30 Sheet t4 1/2H 75 450 30 400 － － －
Wire φ4 1/8H 54 440 22 － － － －
UR31 Rod φ20 D 73 415 35 280 90 85 90
φ35 D 50 350 50 140 90 85 90
UR34 Rod φ28 E 44 380 42 － 85 85 90
φ58 E 38 360 45 － 85 85 90
C36000 Rod φ26 D 73 435 32 280 100 100 100
C37700 Rod φ25 D 75 440 34 275 95 90 95
C46400 Rod φ25 D 75 460 34 285 65 65 65
C83600 Rod φ21 casting 17 295 20 － 105 105 110
Drilling test condition (Machinability index of C36000 is 100)
Drilling diameter:3.5mm, revolving speed: 0.17rev., rotations number: 1250rpm
 

Contents

(UR) Ultra Resistance
Physical Properties
Corrosion Resistance
Product Lineup
Mechanical Properties
Chemical Composition
Sizes