|Product name:||forged steel rings||MOQ:||one piece|
|Delivery time:||within 5-35 days||Pakage:||Wooden case or according to customers' requirement|
|Inspection:||The third party is acceptable||UT:||ASTM A 388 or according to customers' requirement|
41Cr4 / 5140/40Cr professional forged steel rings
Used to manufacture medium speed and medium load parts after quenched and tempered, such as gear, shaft, worm, spline shaft, centre sleeve, etc.
Used to manufacture high hardness surface and wear resistance parts after high frequency case hardening and tempered, such as gear, main shaft, bent axle, mandrel, sleeve, pin, connecting rod, screw, nut, etc.
The first quench heating temperature (850 ℃) :; Cooling agent: oil
The second quench heating temperature (℃) :-
Tempering heating temperature (520 ℃) :; Cooling agent: water, oil
Tensile strength (sigma b/MPa) : ≧ 980
The yield point (sigma s/MPa) : ≧ 785
Elongation (delta 5 / epigastric %) : ≧ 9
Section shrinkage rate (%) : ψ / ≧ 45
Impact absorption power (Aku2 / J) : ≧ 47
Brinell hardness (HBS100/3000) (annealing or high temperature tempering state) : ≦ 207