125Cr5
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Product Description:
125Cr5 is a high-chromium tool steel, often categorized as a high-alloy steel, known for its excellent wear resistance, high hardness, and good toughness. It is primarily used in the manufacture of high-performance tools and components that need to withstand severe mechanical stresses and high temperatures. The steel contains a substantial amount of chromium, which significantly enhances its wear resistance, while carbon provides high hardness. The addition of other elements like vanadium or molybdenum may improve toughness and heat resistance.
Features:
- High Wear Resistance: The high chromium content in 125Cr5 offers excellent resistance to wear, making it ideal for cutting tools, dies, and components exposed to friction and abrasion.
- Good Hardness: The steel achieves a high level of hardness after heat treatment, contributing to its superior wear resistance and durability under stress.
- Good Toughness: While hard, 125Cr5 also offers good toughness, which helps reduce the likelihood of brittle fracture under high-impact loading.
- Heat Resistance: This steel maintains its strength and hardness even at elevated temperatures, which is essential for tools used in hot-working applications.
- Corrosion Resistance: The chromium content provides moderate corrosion resistance, making it resistant to rust and oxidation, especially in dry and moderately humid environments.
- High Hardenability: 125Cr5 steel responds well to heat treatment, achieving a uniform hardness even in thicker sections.
Specifications:
- DIN 1.2542: German standard for alloy tool steels, including 125Cr5.
- AISI/SAE equivalent: In some cases, 125Cr5 may have a similar performance to AISI 5Cr steel.
- ISO 4957: International standard covering tool steels, which includes specifications for materials like 125Cr5.
- BS 4659: British Standard that lists specifications for high-performance tool steels such as 125Cr5.
Composition of 125Cr5 Steel:
Element | Percentage |
---|---|
Carbon (C) | 0.50 – 0.60% |
Manganese (Mn) | 0.30 – 0.60% |
Chromium (Cr) | 4.50 – 5.50% |
Silicon (Si) | 0.30 – 0.50% |
Vanadium (V) | 0.10 – 0.20% |
Phosphorus (P) | 0.03% Max |
Sulfur (S) | 0.03% Max |
Iron (Fe) | Balance |
Physical Properties:
Property | Value |
---|---|
Density | 7.85 g/cm³ |
Melting Point | 1425°C (2597°F) |
Hardness (Brinell) | 250-300 HB |
Tensile Strength | 850-1100 MPa (123,000-160,000 psi) |
Yield Strength | 600-800 MPa (87,000-116,000 psi) |
Elongation | 8-12% |
Modulus of Elasticity | 210 GPa |
Thermal Conductivity | 42 W/m·K |
Coefficient of Thermal Expansion | 11.5 × 10⁻⁶ /°C |