AISI 4140 Tubing

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AISI 4140 Tubing Manufacturer, Supplier and Exporter in Cape Town, South Africa

Bosega Pipes and Tubes, located in Cape Town, South Africa, stands out as a top manufacturer and supplier of high-quality AISI 4140 Tubing. This tubing is specifically designed for strength, durability, and high-performance applications. Renowned for its exceptional mechanical properties, it resists wear, corrosion, and fatigue, all while meeting rigorous international standards. At Bosega, the focus is on precision manufacturing, quality assurance, and ensuring customer satisfaction, which guarantees reliable and consistent performance. AISI 4140 Tubing finds its place in various industries, including oil and gas, power generation, automotive, and heavy machinery, providing effective solutions for demanding industrial operations that require resilience under high stress and temperature.

AISI 4140 Tubing
SAE 4140 QT Tube
4140 Tubing

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Table of Contents

AISI 4140 Tubing is a low-alloy steel that contains about 0.4% carbon, 0.8–1.1% chromium, and 0.15–0.25% molybdenum, which together enhance its toughness, hardness, and strength. It boasts a tensile strength of approximately 655 MPa and a yield strength of 415 MPa, along with excellent elongation, making it durable even in tough conditions. This tubing is known for its superior fatigue resistance, hardenability, and weldability, making it perfect for structural and high-pressure applications that demand long-term reliability and mechanical stability.

AISI 4140 Tubing Specification

DimensionsASTM, ASME and API
Supplier of 4140 Alloy Steel Tube
in Length
Within 13500 millimeter
Speciality inLarge Diameter Size
Size4 to 219 millimeter W. T.: 0.5 to 20 millimeter
LengthIn Single and Double Random & Cut to Length Suppliers
AISI 4140 Tube TypeWelded / Seamless / Fabricated / ERW
FormRound, Square, Rectangular, Hydraulic.
EndPlain End, Threaded, Beveled End

AISI 4140 Tubing Chemical Composition

StandardGradeCMnPSSiNiCrMo
ASTM A2941400.38-0.430.75-1.000.0350.0400.15-0.350.8-1.100.15-0.25
EN 1025042CrMo4/
1.7224
0.38-0.450.6-0.90.0350.0350.40.9-1.20.15-0.30
JIS G4105SCM4400.38-0.430.60-0.850.030.030.15-0.350.9-1.20.15-0.30

AISI 4140 Tubing Mechanical Properties

PropertiesMetricImperial
Hardness, Vickers (converted from Brinell hardness)207207
Tensile strength655 MPa95000 psi
Bulk modulus (typical for steel)140 GPa20300 ksi
Yield strength415 MPa60200 psi
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)1313
Elastic modulus190-210 GPa27557-30458 ksi
Poisson’s ratio0.27-0.300.27-0.30
Elongation at break (in 50 mm)25.70%25.70%
Shear modulus (typical for steel)80 GPa11600 ksi
Hardness, Brinell197197
Machinability (based on AISI 1212 as 100 machinability)6565
Hardness, Rockwell B (converted from Brinell hardness)9292
Hardness, Knoop (converted from Brinell hardness)219219

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We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose AISI 4140 Tubing from Bosega Pipes and Tubes?

When you choose AISI 4140 Tubing from Bosega Pipes and Tubes, you can count on exceptional quality and long-lasting durability. These tubes offer excellent corrosion resistance and high strength, making them perfect for various industrial applications. Our commitment to outstanding service and reliable delivery guarantees customer satisfaction with every order. With extensive expertise in stainless steel products, we provide premium solutions tailored to meet your unique needs.

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Largest AISI 4140 Tubing Supplier in Cape Town, South Africa

Bosega Pipes and Tubes, a top supplier of AISI 4140 Tubing in Cape Town, South Africa, offers a comprehensive range of high-quality pipes and tubes for various industrial applications. With an extensive inventory and a commitment to exceptional customer service, they have become the go-to source for stainless steel products in the area.

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Types of AISI 4140 Tubing

AISI 4140 Tubing
UNS G41400 Tubing
4140 Chromoly Steel Tubing
4140 Tubing
SAE 4140 qt Steel Tubes
AISI 4140 qt Alloy steel Tubing

Are Custom Sizes Available for AISI 4140 Tubing?

At Bosega Pipes and Tubes, we specialize in providing custom-sized AISI 4140 Tubing designed to meet your specific requirements. Our expert team is committed to delivering personalized solutions for all your piping and tubing needs. For more details, contact us at sales@bosegapipes.co.za.

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You’ll find AISI 4140 Tubing widely used in situations that require high strength, toughness, and wear resistance. It’s commonly found in hydraulic systems, automotive parts, aircraft landing gears, shafts, and heavy machinery. Its ability to endure high pressure and stress makes it a great fit for oil and gas pipelines, refinery equipment, and power generation machinery. Plus, AISI 4140 Tubing is ideal for structural components, gears, and crankshafts, where long-lasting performance, mechanical reliability, and safety in extreme operating conditions are absolutely essential.

AISI 4140 Tubing Uses

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