4140 Seamless Tubing for Mechanical & Industrial Applications

4140 Alloy Steel Tube Overview

AISI 4140 and SAE 4140 are chromium-molybdenum alloy steel grades commonly used for demanding mechanical applications. 4140 tube is typically supplied as seamless mechanical tubing where strength, toughness and machinability are important.

4140 Tube Specifications

Artículo	Especificación
Material	AISI 4140 / SAE 4140
Product Type	Seamless Alloy Steel Tube
Tube Type	Mechanical Tubing
Fabricación	Hot Finished / Cold Finished
Shape	Round Tube
Outside Diameter	Customized
Espesor de pared	Customized
Longitud	Estándar o personalizado
Condiciones de entrega	Annealed, Normalized, Quenched & Tempered or as Required
Superficie	Black, Bright, Polished or as Required
Tratamiento	Cutting, CNC Machining, Heat Treatment and Other Services
Inspection & Documents	MTC, EN 10204 3.1 Available
Embalaje	Seaworthy Export Packing or Customized

4140 mechanical tubing can be supplied according to the required outside diameter, wall thickness, length and delivery condition. Specific dimensions should be confirmed according to the applicable product standard and order requirements.

Composición química

C	Mn	Si	Cr	Mo
0,38-0,43%	0.75–1.00%	0.15–0.35%	0.80–1.10%	0.15–0.25%

The applicable chemical composition depends on the specified standard and product requirements. Actual values are confirmed by the mill test certificate.

4140 Tube Mechanical Properties

Condición	Resistencia a la tracción	Límite elástico	Dureza
Recocido	According to applicable specification	According to applicable specification	According to delivery condition
Templado y revenido	According to specified condition	According to specified condition	According to specified condition

For applications requiring defined mechanical properties, the required heat treatment or delivery condition should be specified when ordering.

4140 Tube Heat Treatment

4140 is suitable for heat treatment to achieve different combinations of strength, hardness and toughness.

Tratamiento térmico	Typical Purpose
Recocido	Improve machinability and reduce hardness
Normalización	Refine the structure and provide a uniform condition
Temple y revenido	Increase strength and hardness while maintaining toughness
Stress Relieving	Reduce residual stresses after machining or fabrication

The appropriate heat treatment condition can be supplied according to the intended application and required mechanical properties.

4140 Tube Applications

4140 steel tube is used in mechanical and industrial applications such as:

• Hydraulic cylinders and components
• Shafts and axles
• Gears and drive components
• Maquinaria pesada
• Automotive and agricultural equipment
• Industrial mechanical components

Its combination of strength, toughness and heat-treatment capability makes it suitable for components exposed to high loads, impact and repeated mechanical stress.

4140 Tube Supply & Processing

Suministros de acero CJM 4140 steel tube for international distributors, machinery manufacturers, fabricators and industrial projects.

Available supply and processing services include:

• Customized tube dimensions and lengths
• Cutting
• CNC machining
• Heat treatment
• Surface processing
• Inspección
• Mill Test Certificate (MTC)
• EN 10204 3.1 documentation
• Seaworthy export packaging

4140 tube can be supplied according to project requirements for material condition, dimensions, quantity, processing and inspection.

For a quotation, please provide the outside diameter, wall thickness, length, quantity and required delivery condition, together with any processing or documentation requirements.

Preguntas frecuentes

What is 4140 steel tube?

4140 steel tube is a seamless alloy steel tube made from AISI/SAE 4140 chromium-molybdenum steel. It is commonly used for mechanical and industrial components requiring high strength and toughness.

Is 4140 tube seamless?

Yes. 4140 is commonly supplied as seamless mechanical tubing, including hot-finished and cold-finished forms depending on the required specification.

Is 4140 equivalent to 42CrMo4?

AISI/SAE 4140 is commonly compared with 42CrMo4 (1.7225) as a close equivalent alloy steel grade. The exact equivalence should be confirmed against the applicable standard and chemical requirements.

Is 4140 available as pipe?

Yes. 4140 can also be supplied in seamless pipe forms for applications requiring pipe products. However, 4140 steel tube is commonly specified for mechanical tubing applications.

Can CJM Steel supply 4140 steel tube?

Yes. CJM Steel supplies 4140 alloy steel tube with customized dimensions, heat treatment, cutting, machining, inspection and export support according to project requirements.

P: ¿Cuáles son los principales productos/servicios de su empresa?

R: Somos fabricantes profesionales de productos de acero al carbono, acero aleado y perfiles. Tenemos la experiencia del negocio de acero por más de 10 años y nuestros productos se exportan a Oriente Medio, Suramérica, Asia sudoriental, África, Asia del sur y del este etc.

P: ¿Puedo visitar su fábrica?

R: Por supuesto, invitamos a clientes de todo el mundo a visitar nuestra fábrica.

P: ¿Cuáles son sus condiciones de pago?

R: 30% T/T depósito y 70% saldo antes del envío.

P: ¿Cuál es su plazo de entrega?

R: Para las existencias, podríamos transportar las mercancías al puerto de carga dentro de los 7 días después de recibir el depósito; Para la producción, por lo general toma alrededor de 15-30 días después de recibir el depósito.

P: ¿Proporcionan muestras? ¿Son gratuitas o de pago?

R: Las muestras están disponibles de forma gratuita, pero el flete de mensajería será cubierto por la cuenta del cliente.

P: ¿Aceptan la inspección de terceros?

R: Sí, aceptamos inspecciones de terceros.

P: ¿Por qué debería comprarles a ustedes y no a otros proveedores?

R: Integrando los recursos superiores de la industria siderúrgica de China, proporcionamos a los clientes productos de acero de alta calidad a precios preferenciales, y podemos garantizar que las mercancías se entregan a los clientes a tiempo.

P: ¿Cómo garantizan la calidad?

A: Siempre una muestra de pre-producción antes de la producción en masa;Siempre 100% inspeccionado antes del envío