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AISI 4130 Alloy Steel Round Bar

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Description

Product Attributes

Brand: JIADE Group

Standard: Astm, Jis, Din

Specifications: Grade 4130 Alloy, AISI 4130, UNS G41300

Packaging & Delivery

Product Description

What is 4130 Steel ?

Alloy Steel Bar 4130 is highly popular in welding applications and is typically used in the normalized condition without requiring further heat treatment. It can be nitrided to enhance its wear resistance. Its popularity stems primarily from its weldability, hardenability, and machinability. Alloy 4130 exhibits properties similar to those of alloy 8630. Alloy 4130 is stored in normalized, quenched, and tempered conditions.

Chemical Elements of 4130 Alloy Steel

Key Characteristics

High Strength and High Toughness: The optimal ratio of alloying elements endows it with high strength, enabling it to withstand significant stress and loads. It also possesses excellent toughness, resisting impact and vibration under various working conditions while exhibiting low susceptibility to brittle fracture.

Good Weldability: With relatively low carbon content, it is less prone to defects such as cracks during welding. Common welding methods like arc welding and gas welding can be employed.

Excellent Heat Treatability: Through processes like quenching, tempering, and normalizing, the steel's hardness, strength, and toughness can be precisely adjusted.

Good Machinability: In annealed, normalized, or quenched and tempered conditions, it exhibits favorable machining properties, allowing turning, milling, and other operations with standard tools and equipment.

Heat Treatment Processes

Normalizing: Temperature range 850-900°C, followed by air cooling after holding.

Annealing: Temperature range 690-720°C, followed by slow furnace cooling. Maximum Brinell hardness: 225.

Quenching and Tempering: Quenching temperature 860-890°C, followed by oil or water cooling. Tempering temperature 550-640°C, followed by air cooling.

Application

Aerospace: Used for manufacturing critical structural components such as aircraft landing gear, wing spars, and fuselage frames.

Automotive Manufacturing: Suitable for producing automotive components including drive shafts, half shafts, crankshafts, connecting rods, and gears.

Machinery Manufacturing: Commonly used for manufacturing shaft components, gears, worms, sprockets, and other transmission parts for various machinery, as well as high-strength bolts, nuts, and other fasteners.

Petrochemical Industry: Suitable for manufacturing drill pipes, tubing, sucker rods in oil drilling equipment, as well as reactors, pipelines, valves in chemical processing equipment.

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