TORICH INTERNATIONAL LIMITED
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Products Description:
used for Gears Crankshafts Chinese Grade 20CrNiMo Cold Drawn Seamless Alloy Steel Tubes
Quick Detail:
Chemical Compositions:
| Steel Grade | C | Si | Mn | Cr | Ni | Mo | P | S | Ti |
| 20CrNiMo | 0.17-0.23 | 0.17-0.37 | 0.60-0.95 | 0.40-0.70 | 0.35-0.75 | 0.20-0.30 | ≤0.035 | ≤0.035 | - |
| AISI8620 | 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | 0.40-0.60 | 0.40-0.70 | 0.15-0.25 | ≤0.035 | ≤0.040 | - |
| AISI8620H | 0.17-0.23 | 0.15-0.35 | 0.60-0.95 | 0.35-0.65 | 0.35-0.75 | 0.15-0.25 | - | - | - |
| 20CrMnTiH | 0.17-0.23 | 0.17-0.37 | 0.80-1.15 | 1.00-1.35 | - | - | ≤0.035 | ≤.035 | 0.04-0.10 |
Mechanical Property:
| Steel Grade | Yield Strength MPa | Tensile Strength MPa | Elongation % |
| 20CrNiMo | 785 | 980 | 9 |
| AISI8620 | |||
| AISI8620H | |||
| 20CrMnTiH | 835 | 1080 | 10 |
Applications: in the carburized condition this alloy is used for gears, ring gears, shafts and crankshafts.
Introduction:
Principal Design Features: AISI 8620 is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part. This case-hardening will result in good wear characteristics.
Machinability: Machining is done prior to carburizing to within as close a tolerance as possible. Finish machining, after heat treatment and/or carburizing, should be at a minimum so as not to impair the hardened case of the part. Machining may be done by conventional means prior to heat treatment - after carburizing machining is usually limited to grinding.
Forming: Forming characteristics of 8620 alloy are good in the annealed condition.
Production Steel Tube:
Eddy Current Test and Ultrasonic Test:
Packing: