1. Key Properties:
Alloy Steel with Nickel and Molybdenum: 30CrNiMo13-4 is a high-strength, low-alloy steel with a mix of chromium, nickel, and molybdenum, providing excellent mechanical properties such as toughness, wear resistance, and strength.
High Strength and Toughness: This steel grade combines high strength with excellent toughness, making it suitable for components subjected to both high stress and impact.
Good Hardenability: The steel’s alloying elements (chromium, nickel, and molybdenum) enhance its hardenability, allowing it to achieve high hardness and strength when heat treated.
Wear Resistance: 30CrNiMo13-4 exhibits good wear resistance, especially in applications that involve heavy loads or friction.
Good Weldability: This steel has reasonable weldability, although preheating and post-weld heat treatment may be needed for thicker sections to reduce the risk of cracking.
Corrosion Resistance: It provides moderate corrosion resistance, which is further enhanced by surface treatments such as coating or plating in aggressive environments.
2. Applications/Industries:
Automotive: 30CrNiMo13-4 is used for high-strength automotive components like gears, shafts, and crankshafts, where a combination of strength, toughness, and wear resistance is needed.
Heavy Machinery: This steel is employed in heavy machinery for parts such as gear wheels, bearings, and shafts, which must endure high mechanical stresses and wear.
Oil & Gas: Used in oil and gas equipment like pressure vessels, valve components, and pumps that require high mechanical strength, toughness, and moderate corrosion resistance.
Aerospace: In aerospace applications, this steel is used for critical parts such as landing gear and turbine components due to its high strength and fatigue resistance.
Power Generation: Commonly used in power generation equipment, particularly in turbine parts, shafts, and compressor components that are subjected to high stresses and wear.
3. Certifications/Standards:
DIN 1.2757: 30CrNiMo13-4 complies with the DIN 1.2757 standard for alloy steels, ensuring it meets the required chemical composition and mechanical properties.
ISO 9001: Quality management system certification, ensuring the product adheres to high manufacturing and quality standards.
4. Chemical Composition:
Carbon (C): 0.28% – 0.35%
Chromium (Cr): 1.30% – 1.60%
Nickel (Ni): 1.30% – 1.70%
Molybdenum (Mo): 0.30% – 0.50%
Manganese (Mn): 0.40% – 0.70%
Silicon (Si): 0.15% – 0.35%
Phosphorus (P): 0.035% max
Sulfur (S): 0.035% max
Iron (Fe): Balance
5. Technical Specifications:
Yield Strength:
30CrNiMo13-4: 700–900 MPa (depending on heat treatment and thickness)
Tensile Strength:
30CrNiMo13-4: 900–1200 MPa
Hardness:
30CrNiMo13-4: After heat treatment, it can achieve 50–58 HRC (Rockwell hardness), making it suitable for high-wear applications.