Customization: | Available |
---|---|
Type: | Alloy Steel Bar |
Standard: | AISI, DIN, GB, BS |
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DIN | Material No. | AFNOR | SAE | BS |
16NiCr4 | 1.5714 | 16NC6 | 4320 | 637M17 |
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 |
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 |
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 | / |