Equivalent Materials
Potential substitutes for SK85/SK5 steel include:
- AISI 1080 or 1084 (high carbon steels)
- DIN C85S or C80U (German equivalents)
- GB/T T8 or T10 (Chinese standards)
Characteristics
This alloy demonstrates superior hardness compared to lower-carbon steels and maintains performance under harsh conditions. Its workability makes it valuable for precision instruments and complex parts in aerospace and electronics industries.
Uses
SK85 steel is extensively used in producing tools such as molds, punches, cutting tools, axes, chisels, and hand saws due to its durability and wear resistance.
Physical Properties
The material exhibits excellent corrosion resistance, thermal conductivity, and fatigue strength. Heat treatment enhances hardness and impact resistance, though higher carbon content may reduce ductility.
Mechanical Properties
Key properties include tensile strength, yield strength, and elongation. Heat treatment improves tensile strength and impact resistance while maintaining toughness to prevent fracturing under stress.
Chemical Composition
| Grade | C | Si | Mn | P | S | Applications |
|---|---|---|---|---|---|---|
| SK85 (SK5) | 0.80-0.90 | 0.10-0.35 | 0.10-0.50 | 0.030 max | 0.03 max | Die stamps, hand saws, cutting tools, gauges |
