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ALLOY STEELS
Silver Steel
Silver Steel
Mercury Steel shows low hardenability, high sensitivity to overheating, low tendency to crack when hardened in water, high wear resistance and good cutting properties.
It is also characterised by low resistance to annealing. It is a material used in the manufacture of cutters, drills, circular saws for metal cutting, reamers, cutting tools for wood, paper, tobacco and rubber.
It is also used in the production of moulds, thread cutters, drills, circular knives, jaws for cutting teeth and nails, engraving tools, bimetal knives and countersinks.
Material Class Comparison
| Material No. | DIN | ASTM | JIS | GOST |
|---|---|---|---|---|
| 1.2210 | 115CrV3 | L2 | SKS43 | 11ChF |
Heat Treatment
Softening annealing : 710 – 750 °C
Hardness after annealing : max. 220 HB
Stress relief annealing : ∼ 650 °C
Hot forming : 1050 – 850 °C
Hardening : 780 – 810 °C veya 810 – 840 °C
Hardening environment : 780 – 810 °C, Water 810 – 840 °C ,Oil (Diametres less than 15 mm)
Hardness after hardening : 64 – 66 HRC
Hardness After Tempering
| 100 °C | 200 °C | 300 °C | 400 °C |
|---|---|---|---|
| 64 HRC | 62 HRC | 57 HRC | 51 HRC |
Physical Properties
Specific gravity : 7.80 kg/dm³ at 20 °C
Thermal conductivity : 32.0 W/(m.K) at 20 °C
Thermal expansion : From 20 °C to 500 °C, 10^-6 m/(mK)
| 100 °C | 200 °C | 300 °C | 400 °C |
|---|---|---|---|
| 11.8 | 12.5 | 13.5 | 13.7 |
Chemical Composition
| C | Si | Mn | P | S | Cr | V |
|---|---|---|---|---|---|---|
| 1.10-1.25 | 0.15-0.30 | 0.20-0.40 | 0.030 | 0.030 | 0.50-0.80 | 0.07-0.12 |
