SK2 Tool Steel
Product overview
SK2 tool steel is a high-quality steel that is known for its strength and durability. It is commonly used in the manufacture and design of knives, cutting tools, and other precision equipment.
One of the standout features of SK2 tool steel is its exceptional hardness. This means that it is highly resistant to wear and tear and can maintain its sharp edge for longer periods of time. It also means that it can withstand higher levels of stress without breaking or chipping, making it an ideal material for high-performance tools.
In addition to its strength, SK2 tool steel is also known for its excellent machinability. It can be easily shaped and molded into various shapes and sizes, making it a versatile material for a wide range of applications.
Due to its exceptional properties, SK2 tool steel is a preferred material among many professionals in various industries, including manufacturing, automotive, and aerospace. Its reliability and durability make it an excellent choice for parts and components that require exceptional performance.
Features
1. High hardness: The hardness of SK2 tool steel can reach HRC60-62 after heat treatment, which can adapt to high intensity cutting and wear environment.
2. Excellent wear resistance: contains a high concentration of carbon and molybdenum elements, it has excellent wear resistance and can be used for a long time without damage.
3. Excellent toughness: after proper heat treatment, can take into account hardness and toughness, not easy to break or deformation, to ensure the stability and accuracy of the machine.
4. Excellent machinability: easy to CNC machining and cutting, can obtain high precision, high surface finish processing effect, improve production efficiency.
5, long life: through strict quality control and quality testing, to ensure that its long-term use does not produce deformation, cracks and other defects, extend the life of the equipment.
Standard
|
|
International |
USA |
UK |
Germany |
France |
Russia |
China |
Japan |
|
ISO |
AISI SAE |
BS |
DIN |
NF |
ΓOCT |
GB |
JIS |
|
|
SK2 (SK120) |
TC120 |
W1-111/2 |
- |
- |
C120E3U |
y12 |
T12 |
SK2 (SK120) |
|
SK4 (SK95) |
TC90 |
W1-9 |
- |
- |
C90E2U |
y10 |
T10 |
SK4 (SK95) |
|
SK5 (SK85) |
TC90 TC80 |
W1-8 |
- |
C80W1 |
C90E2U C80E2U |
y8Γ y9 |
T8Mn T9 |
SK5 (SK85) |
|
SK6 (SK75) |
TC80 TC70 |
W1-7 |
- |
C80W1 |
C80E2U C70E2U |
y8 |
T8 |
SK6 (SK75) |
|
SK7 (SK65) |
-
|
- |
- |
C70W2 |
C70E2U |
y7 |
T7 |
SK7 (SK65) |
Chemical composition
|
Type |
|
Chemical composition(%) |
|||||||
|
C |
Si |
Mn |
P |
S |
Cｒ |
Ni |
Others |
||
|
Special steel JIS G 3311 (4401)
|
SK2 (SK120) |
1.15～ 1.30 |
0.10～ 0.35 |
0.10～ 0.50 |
≦0.030 |
≦0.030 |
≦0.30 |
≦0.25 |
Cu≦0.25
|
|
SK4 (SK95) |
0.90～ 1.00 |
0.10～ 0.35 |
0.10～ 0.50 |
≦0.030 |
≦0.030 |
≦0.30 |
≦0.25 |
||
|
SK5 (SK85) |
0.80～ 0.90 |
0.10～ 0.35 |
0.10～ 0.50 |
≦0.030 |
≦0.030 |
≦0.30 |
≦0.25 |
||
|
SK6 (SK75) |
0.70～ 0.80 |
0.10～ 0.35 |
0.10～ 0.50 |
≦0.030 |
≦0.030 |
≦0.30 |
≦0.25 |
||
|
SK7 (SK65) |
0.60～ 0.70 |
0.10～ 0.35 |
0.10～ 0.50 |
≦0.030 |
≦0.030 |
≦0.30 |
≦0.25 |
||
Quenching Temperature
|
Grade |
Quenching temperature (°C) |
|
SK4 (SK95) |
790–850 oil quenching (760–820 water quenching) |
|
SK5 (SK85) |
790–850 oil quenching (760–820 water quenching) |
|
SK6 (SK75) |
790–850 oil quenching (760–820 water quenching) |
|
SK7 (SK65) |
790–850 oil quenching (760–820 water quenching) |
|
SKS51 |
790–850 oil quenching (760–820 water quenching) |
Quenching and Tempering Properties for Common Steel Grades
Heat Treatment Environment and Precautions for Special Steels
Heat treatment is a critical process for special steels to obtain desired mechanical properties and performance. However, it is also important to consider the heat treatment environment and take necessary precautions to ensure successful treatment. Here are several points to keep in mind:
Heat Treatment Environment:
1. Control the temperature: Special steels typically require precise temperature control during heat treatment. Any deviation from the specified temperature range can lead to suboptimal properties or even failure.
2. Prevent oxidation: Oxygen can react with the steel surface and form oxides, which can reduce the hardness and toughness of the material. Therefore, it is important to limit the exposure of the steel to air and use protective gases such as nitrogen or argon if necessary.
3. Avoid contamination: Special steels can be sensitive to foreign elements such as sulfur or phosphorus, which can cause embrittlement or corrosion. Therefore, the heat treatment equipment, tools, and atmosphere should be kept clean and free of impurities.
Precautions:
1. Use proper personal protective equipment: Heat treatment involves high temperatures and potential hazards such as burns, radiation, or toxic gases. Therefore, operators should wear appropriate clothing, eyewear, gloves, and respirators to minimize the risk of injury.
2. Follow safety guidelines: Heat treatment equipment should be regularly maintained and inspected to ensure it functions properly and does not pose a safety risk. Operators should also be trained in proper procedures and emergency response in case of accidents.
3. Test and evaluate: After heat treatment, it is important to test the product to ensure it meets the desired specifications. Non-destructive testing methods such as ultrasonic, magnetic, or dye penetrant inspections can detect any defects or anomalies before they become a problem.
In conclusion, heat treatment of special steels requires a careful consideration of the environment and precautions to ensure optimal results. By following these guidelines, we can improve the properties and performance of the steels and promote a safe and efficient process.
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