Description
Similar Grade:
| DIN | Material No. | AFNOR | SAE | BS |
| 16NiCr4 | 1.5714 | 16NC6 | 4320 | 637M17 |
Quality Standard:
BS EN 10084 2008 Case hardening steels
Chemical Composition(%)
C | Mn | Si | P | S | Cr | Ni |
| 0.13-0.19 | 0.70-1.00 | 0.40 max | 0.025 max | 0.035 max | 0.60-1.00 | 0.80-1.10 |
Mechanical Properties(values obtained on test blanks after core hardening + stress-relieving)
Test Blanks Diameter(mm) | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (longitudinal) (%) | Impact 20°C(J) | Hardness (HB) |
| 11mm | 1080-1470 | 835 min | 9 min | 30 min | 327-417 |
| 30mm | 830-1130 | 590 min | 10 min | 32.5 min | 249-339 |
HEAT TREATMENT AND HOT PLASTIC DEFORMATION TEMPERATURES
Process | TEMPERATURE°C | Cooling Medium |
| Hot Forming | 900-1150 | air |
| Normalizing | 870 min | air |
| Soft Annealing | 700 min | air 217HB max |
| Carburising | 870-950 | / |
| Core hardening | 840-880 | oil-polymer salt bath |
| Carbonitriding | 750-930 | gas |
| Isothermal annealing | 860 min | cooling to 650, then air (HB 166-217) |
| Case hardening | 810-840 | oil-polymer salt bath |
| Tempering | 150-200 | / |
Applications
Alloyed case hardening steel for parts with a required core tensile strength of 1000 - 1300 N/mm² and good wearing resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.
Complaint
