1. Key Properties:
High Strength: SAE 4125 is an alloy steel with excellent tensile and yield strength, making it well-suited for high-pressure and high-stress applications.
Good Toughness: Known for its toughness, it is resistant to impact and shock loads, ensuring reliability under harsh conditions.
Weldability: This steel offers good weldability, making it versatile for various fabrication processes and structural applications.
Corrosion Resistance: Provides moderate resistance to corrosion, ideal for general industrial environments, though it may require protective coatings in harsh conditions.
Heat Treatable: SAE 4125 can be heat treated to increase hardness and strength, offering flexibility for more demanding uses.
2. Applications/Industries:
Automotive: Used in the production of high-strength automotive components like shafts, gears, axles, and other parts requiring resistance to wear and heavy loads.
Heavy Machinery: Ideal for heavy-duty components such as crankshafts, connecting rods, and structural parts that are subject to fatigue and stress.
Oil & Gas: Commonly used in drilling equipment, pipelines, and high-pressure systems in the oil and gas industry.
Aerospace: Employed for non-critical aerospace components that require high strength and toughness, such as engine parts, structural elements, and landing gears.
Hydraulic Systems: Suitable for hydraulic cylinders, rods, pistons, and other components that need to withstand high pressure and require good machinability.
3. Certifications/Standards:
SAE J403: SAE 4125 conforms to the SAE J403 standard for alloy steels, ensuring it meets specific mechanical and chemical properties.
ASTM A519: This specification applies to seamless carbon and alloy steel mechanical tubing, relevant for SAE 4125.
ISO 9001: Quality management system certification.
4. Chemical Composition:
Carbon (C): 0.23% – 0.28%
Manganese (Mn): 0.60% – 0.90%
Chromium (Cr): 1.00% – 1.40%
Molybdenum (Mo): 0.15% – 0.25%
Silicon (Si): 0.20% max
Phosphorus (P): 0.035% max
Sulfur (S): 0.035% max
Iron (Fe): Balance
5. Technical Specifications:
Yield Strength:
SAE 4125: 450 MPa (minimum)
Tensile Strength:
SAE 4125: 590–735 MPa
Hardness:
SAE 4125: Approximately 197–255 HB (Brinell hardness)
This summary covers the essential information about SAE 4125 Seamless Steel Pipe, including its properties, common uses, certifications, chemical composition, and technical specifications. Let me know if you need anything else!
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SAE 4130 Seamless Steel Pipe
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Here’s the detailed information for SAE 4130 Seamless Steel Pipe:
1. Key Properties:
High Strength: SAE 4130 is a low alloy steel known for its high tensile strength and toughness, making it ideal for high-stress, high-pressure applications.
Excellent Toughness: SAE 4130 provides excellent impact resistance, which is crucial for parts that are subject to heavy wear and harsh conditions.
Weldability: This steel has good weldability, making it suitable for complex fabrication processes.
Corrosion Resistance: Offers moderate corrosion resistance, making it ideal for use in a variety of industrial environments.
Heat Treatable: SAE 4130 is highly heat-treatable, allowing for further strength enhancement, making it versatile for a wide range of applications.
2. Applications/Industries:
Aerospace: Commonly used in aerospace for parts such as landing gears, frames, and other components that require high strength and fatigue resistance.
Automotive: Used in the manufacturing of parts such as roll cages, chassis, and suspension components for racing cars or vehicles requiring high strength and durability.
Oil & Gas: Used in critical oil and gas applications like drilling equipment and pipeline components that require strength and resistance to extreme conditions.
Heavy Machinery: Ideal for producing structural components, gears, shafts, and rods that need to withstand high pressure and stress.
Engineering: Employed in structural applications where strength, toughness, and the ability to be heat-treated are important.
3. Certifications/Standards:
SAE J403: SAE 4130 conforms to the SAE J403 standard for alloy steels, which specifies chemical composition and mechanical properties.
ASTM A519: Covers seamless carbon and alloy steel mechanical tubing, which applies to SAE 4130 pipes.
ISO 9001: Quality management system certification.
4. Chemical Composition:
Carbon (C): 0.28% – 0.33%
Manganese (Mn): 0.40% – 0.60%
Chromium (Cr): 0.80% – 1.10%
Molybdenum (Mo): 0.15% – 0.25%
Silicon (Si): 0.15% – 0.30%
Phosphorus (P): 0.035% max
Sulfur (S): 0.035% max
Iron (Fe): Balance
5. Technical Specifications:
Yield Strength:
SAE 4130: 460 MPa (minimum)
Tensile Strength:
SAE 4130: 680–850 MPa
Hardness:
SAE 4130: Approximately 197–255 HB (Brinell hardness)