4140 En19 Hot Rolled Alloy Steel Pipe Seamless

• Customization: Available
• Application: Chemical Industry, Oil and Gas Industry, Water Treatment Plants
• Certification: CE, ISO9001
• End Connection: Beveled End
• Length: 3m, 4m, 5m, 6m, 11.8m or Custom, Single Random Length (SRL)
• Outer Diameter: 6 inch
• Wall Thickness: Schedule 160
• Type: Seamless
• Technique: Hot Rolled
• Material: Alloy Steel
• Surface Treatment: Varnishing
• Usage: Machinery Industry
• Section Shape: Round
• After-Sales Service: Change/Return
• Warranty: 10 Year
• Steel Grade: 4140
• Technical: Hot Rolled/Cold Rolled/Cold Drawn
• Surface: Anti-Corrosion Oil or Custom
• Transport Package: Bundles or Wooden Case
• Specification: 1/2′-24" NB
• Trademark: KM/OEM
• Origin: China
• HS Code: 730490
• Production Capacity: 1000ton/Month

Product Description

4140 En19 Hot Rolled Alloy Steel Pipe Seamless 

A519 gr 4140 Seamless Steel Tubing is an alloy steel grade which contains elements like chromium-, molybdenum-, and manganese. The ASTM A519 Grade 4140 is low alloy steel, which offers superior characteristics. For instance, some of the vital characteristics of specified A519 4140 Chrome Alloy Steel Hf Smls Tubing include high fatigue strength, high abrasion and impact resistance, along with good toughness, and torsional strength properties. As typical of this alloy steel, this particular specified Alloy Steel A519 4140 Square Tubing material could be welded using all conventional shop practices. However, the mechanical properties of this ASTM A519 Grade 4140 pipe tend to get affected these tubes are welded in the heat-treated condition. Hence, a post-weld heat treatment must be conducted on the ASTM A519 Grade 4140 Mechanical Tubing.

The A519 gr 4140 Seamless Tubing manufactured under this specification is a tubular product made without a welded seam. The tubes are usually manufactured by hot working the steel. And if necessary, the A519 Grade 4140 Steel Tubing can be produced by subsequently cold finishing the hot worked product i.e. the ASTM A519 tube in order to achieve not only the desired shape, but also the desired dimensions and properties. The A519 4140 Hot Finished Tubing material can be furnished in any of the following shapes i.e. -  round, square or rectangular. Although at our factory, we can manufacture these tunes in special sections, depending on customizations given by our client or on basis of the application for what these tubes are used. Heat analysis is often conducted on the Chrome Moly Steel ASTM A519 4140 Boiler Tubing in order to determine the specified percentages of the elements.
Chemical Composition

Element	Content (%)
Iron, Fe	96.785 - 97.77
Chromium, Cr	0.80 - 1.10
Manganese, Mn	0.75 - 1.0
Carbon, C	0.380 - 0.430
Silicon, Si	0.15 - 0.30
Molybdenum, Mo	0.15 - 0.25
Sulfur, S	0.040
Phosphorous, P	0.035

 

Physical Properties 

Properties	Metric	Imperial
Density	7.85 g/cm3	0.284 lb/in³
Melting point	1416°C	2580°F

 

Mechanical Properties

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	60200 psi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinability)	65	65

AISI 4140 Pipe Specification

Standard	AISI 4140, ASTM A519
Size	1/2" NB to 36" NB
Thickness	3-12mm
Schedules	SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Tolerance	Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm
Craft	Cold rolled and Cold drawn
Type	Seamless / ERW / Welded / Fabricated
available in Form of	Round, Square, Rectangular, Hydraulic Etc.
Length	Standard Double & In Cut length also.
End	Plain End, Beveled End, Treaded

Company Profile
From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc.
All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment.
Both our sales and logistic teams are over 10 years of experiences and training frequently.
After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.
Why choose us?
One-Stop Solution
We have thousands of total production experience, from raw materials to finished products.
Competitive Price
Large scale purchase, standardized production process and efficient management make our price competitive.
Quick Shipping
Years of export experience enable us to control the transportation time more accurately.
Quality Control
The standardized production process, comprehensive management system, professional testing equipment
Special material customization
We support the customization of various complex materials
OEM/ODM
We support any form of OEM/ODM customization requirements.