Durable 42CrMo4 Round Bar - Ideal for Heavy Load Structures

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM
• Model NO.: 42CrMo4
• Technique: Peel and Polish
• Application: Tool Steel Bar
• Surface Treatment: Polished
• Alloy: Alloy
• Special Use: Mold Steel
• HS Code: 7228309000
• Production Capacity: 50000ton/Years

Product Description

Product Description

42CrMo4

I. Definition and Description of 42CrMo4 1. Material Definition 42CrMo4 is a distinguished medium-carbon alloy structural steel, conforming to the prestigious European standard (EN) steel grades. It aligns with 42CrMo (or approximately 42CrMoA) in China's national standard, SCM440 in Japan's standard, and AISI 4140 in the American standard. The chemical composition and mechanical properties highlight its exceptional quality: • Chemical composition (typical values, %) : Carbon (C) : 0.38-0.45 ° Silicon (Si) : 0.17-0.37 ° Manganese (Mn) : 0.50-0.80 ° Chromium (Cr) : 0.90-1.20 ° Molybdenum (Mo) : 0.15-0.25  Phosphorus (P) ≤0.035, sulfur (S) ≤0.035 • Mechanical properties (post quenching and tempering treatment) : Tensile strength (σb) : ≥1080 MPa Yield strength (σs) : ≥930 MPa Elongation (δ5) : ≥12%  Shock absorption energy (Akv) : ≥63 J (at room temperature). 2. Performance Features: Unparalleled strength and toughness: By undergoing quenching and tempering (quenching + high-temperature tempering), it achieves superb mechanical properties, with remarkable wear and fatigue resistance. • Outstanding machinability: Enjoys excellent cutting performance and reliable heat treatment processability (high hardenability and minimal quenching deformation). • Enhanced corrosion resistance: The alloying elements (Cr, Mo) grant it superior corrosion resistance compared to standard carbon steel.

Specification

Applications of 42CrMo4

1. Mechanical Manufacturing Field • High-strength components: Perfect for creating parts that endure heavy loads and high stresses, including gears, spindles, couplings, bolts, piston rods, etc. • Construction Machinery: Essential for transmission components and load-bearing structural elements in equipment like excavators and cranes. • Automobiles and Rail Transit: Essential for engine crankshafts, transmission gears, train axles, and heavy-duty vehicle chassis components. 2. Aerospace and Energy Industry • Aviation Components: Vital for aircraft landing gear and high-strength bolts. • Petroleum Machinery: Used for drill bits, drill pipes, sucker rods in drilling equipment, and high-pressure pipe fittings in chemical equipment. • Wind Power Equipment: Crucial for key load-bearing components such as gearboxes, main shafts, and flange plates. 3. Molds and Tools • Large Molds: Ideal for mold bases for plastic molds, cores, and cavities for die-casting molds (surface hardening treatment required). • Tool Steel: Integral for manufacturing high-strength cutting tools, punches, etc. (Requires further heat treatment to increase hardness).

Packaging & Shipping

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Export Packaging Requirements for 42CrMo4 1. Packaging Purpose: Safeguard against surface damage or performance degradation from collision, moisture, or corrosion during transit. Ensure compliance with the importing country's customs and logistics providers concerning packaging labels, environmental protection, etc. 2. Common Packaging Methods, Types, Applicable Scenarios, Specific Requirements: Strapping Packaging for regular-shaped products like round steel and bars - Employ steel straps or wires for strapping (with consistent spacing to prevent loosening).
- The base is cushioned with wooden pallets to aid the loading and unloading of precision machined parts, small-sized products, or high value-added items in wooden crates/wooden pallets using forklifts. - The wooden crates must be fumigated (adhering to ISPM 15 standards and marked with IPPC).
- The interior is lined with moisture-proof paper or bubble wrap for anti-rust packaging, ideal for long-term storage or marine transportation. - Surfaces are treated with anti-rust oil or covered with anti-rust paper.
- Encased in plastic film bags and sealed, with desiccants like silica gel included for bulk export in containers. - Directly loaded into containers, with bases secured using wooden wedges to prevent rolling.
Ventilation holes within the box are sealed to prevent rainwater ingress.