ASTM A519 4140

Energy Steel Industrial Co., Ltd.
Steel Fabrication,Special Steel,Nickel Alloy Steel Tube

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ASTM A519 4140

Prosaic Steel and Alloys India Manufacturer and Supplier, Importer, Stockholder, Exporter of A519 4140 Pipe Premier Suppliers of bulk A519 4140 Pipe Stock worldwide. Fast delivery Guaranteed for Every Size Alloy Steel A519 4140 Pipe; Alloy steel pipe, largest range of A519 4140 Pipe suppliers in India.


AISI 4140 Seamless Pipe is tubing made to the pipe schedule. Alloy pipe in the power industry generally refers to A335 material, but in the oil and gas market, 4140 Pipe is used. This product is made to the pipe schedule but uses A519-4140 as the controlling Seamless specification. The material is then heat treated to L80, P110 or the customer’s specified properties. This material is easily welded and is generally used for above ground applications and utilizes the fittings, flanges and other piping components with the same 4140 chemistry. This product is a good alternative to replace X65 through X80 piping items where the usage or repair is too small for mill production.

AISI 4140 is a low alloy steel containing molybdenum and chromium as strengthening agents. We stocks all AISI 4140 Pipes, 4140 Tubing, 4140 Flanges, 4140 Pipes Fittings, 4140 Elbow etc. The carbon content is nominally 0.30% and with this relatively low carbon content the alloy is excellent from the fusion weldability standpoint. The alloy can be hardened by heat treatment. Typical applications for 4140 low alloy steel include structural use such as aircraft engine mounts and welded tubing applications.


AISI 4140 Alloy Steel (UNS G41400)

Alloy steels are designated by AISI four-digit numbers. They are more responsive to mechanical and heat treatments than carbon steels. They comprise different types of steels with compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va in the carbon steels.


Prosaic Steel and Alloys Supply 4140 pipe:

A519-4140
NPS 2” to 12”
Schedules 120 through XXH
Non-Scheduled walls through 1.5”
API 5CT L80- equivalent mechanicals
API 5CT P110-equivalent mechanicals
API 5CT Q125-equivalent mechanicals


Prosaic Steel Supply stocks a full range of the following A335 pipe grades:
Size Range 2″ – 12”
Schedules 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH & heavier
Standard ASTM A519
Grade AISI 4140, L80, L110
A519 4140 Alloy Steel Seamless Pipe Chemical Composition

Chemical composition % of A519 4140 Alloy Steel Seamless Pipe

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 A519 4140 Alloy Steel Seamless Pipe

The following table shows the physical properties of AISI 4140 alloy steel.

Properties Metric Imperial
Density 7.85 g/cm3 0.284 lb/in³
Melting point 1416°C 2580°F
Mechanical Properties of A519 4140 Alloy Steel Seamless Pipe and Tubes

The mechanical properties of AISI 4140 alloy steel are outlined in the following table.

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
Thermal Properties A519 4140 Alloy Steel Seamless Pipe and Tubes

The thermal properties of AISI 4140 alloy steel are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@ 0-100°C/32-212°F) 12.2 µm/m°C 6.78 µin/in°F
Thermal conductivity (@ 100°C) 42.6 W/mK 296 BTU in/hr.ft².°F
Tensile Properties A519 4140 Alloy Steel Seamless Pipe and Tubes

The following table shows the physical properties of AISI 4140 Alloy Steel Seamless Pipes.

Tensile Properties
Grade Designation Condition Ultimate Strength Yield Strength Elongation in 2 in.or 50mm,% Rockwell,Hardness B Scale
ksi Mpa ksi Mpa
4140 HR 90 621 70 483 20 89
SR 105 724 85 586 10 95
A 75 517 55 379 30 81
N 90 621 60 414 20 89
Specifications
Standard Alloy Steel
AISI 4140 Alloy Steel UNS G41400
AISI 4340 Alloy Steel UNS G43400
AISI 4140 Alloy Steel UNS G41400
AISI 8620 Alloy Steel UNS G86200
Other Grades and Trade Names
GB/T 3077 JIS AISI/SAE DIN BS ISO
20Mn2-50Mn2 SMn420-SMn443 1320-1345 20Mn5-50Mn7 150M19-160M36 22Mn6-42Mn6
15Cr-50Cr SCr415-445 5115-5150 - 527A17 20Cr4-41Cr4
15CrMo SCM415 - 15CrMo5 1653 -
35CrMo SCM435 4137 34CrMo1 - -
30CrMo SCM420 4140 25CrMo4 25CrMo4
30CrMoA SCM430 4140 34CrMo4 34CrMo4
42CrMo SCM440 4140 42CrMo4 708M40
- - F11-91 - - -
38CrMoAl SACM645 - - - 41CrAlMo74
50CrV - 6150 51CrV4 - -
15-20CrMn SMnC420 5115-5120 16MnCr5 16MnCr5
GCr15 - SAE52100 100Cr6 - -
GCr15SiMn - - 100CrMnSi6-4 - -
20CrMnMo(H) SCM421(H) 4119 - - -
40CrMnMo SCM440 4142 42CrMo4 708A42 42CrMo4
20-50CrNi SNC436 3115-3150 40NiCr6 640M40 -
12CrNi2 SNC415 3415 14NiCr10 - -
20CrNiMo SNCM220 8620 21NiCrMo2 805M20 20NiCrMo2
34CrNiMo - - 34CrNiMo6 - -
34CrNi1Mo - - 34CrNi1Mo6 - -
40CrNiMo SNCM439 4340 36CrNiMo4 816M40 -

Oil machinery steel series: AISI4150M, AISI4140, AISI 4140 etc.

Fabrication and Heat Treatment
Machinability A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel has good machinability in the annealed condition.

Forming A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.

Welding A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat treated condition, and post weld heat treatment should be performed.

Heat Treatment A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel is heated at 845°C (1550°F) followed by quenching in oil. Before hardening, it can be normalized by heating at 913°C (1675°F) for a long period of time followed by air cooling.

Forging A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel is forged at 926 to 1205°C (1700 to 2200°F)

Hot Working A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel can be hot worked at 816 to 1038°C (1500 to 1900°F)

Cold Working A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel can be cold worked using conventional methods in the annealed condition.

Annealing A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling in the furnace.

Tempering A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel can be tempered at 205 to 649°C (400 to 1200°F) depending upon the desired hardness level. The hardness of the steel can be increased if it has lower tempering temperature. For example, tensile strength of 225 ksi cab be achieved by tempering at 316°C (600°F), and a tensile strength of 130 ksi can be achieved by tempering at 538°C (1000°F).

Hardening A519 4140 Alloy Steel Seamless Pipe and Tubes
AISI 4140 alloy steel can be hardened by cold working, or heating and quenching.
AISI 4140 L80 Alloy Steel Seamless Pipes

Chemical CompositionAISI 4140 L80 Alloy Steel Seamless Pipes

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.380 0.750 0.150 0.800 - - - - - 0.150 - -
Max 0.430 1.100 0.250 1.100 - - - 0.035 0.040 0.300 - -

Mechanical Properties AISI 4140 L80 Alloy Steel Seamless Pipes

Tensile Strength 689 MPa min 100,000 psi min
Yield Strength 552 MPa min 655 MPa max
80,000 psi min 95,000 psi max
Total Elongation Under Load 20.000 % -
Hardness 23 Max HRC

Mechanical Properties AISI 4140 L110 Alloy Steel Seamless Pipes

Tensile Strength 862 MPa min 125,000 psi min
Yield Strength 758 MPa min 965 MPa max
110,000 psi min 140,000 psi max
Total Elongation Under Load 13.000 % -
Hardness 30 Max HRC -

A519 4140 Alloy Steel Seamless Pipe and Tubes Packing

A519 4140 Alloy Steel Seamless Pipe and Tubes is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.
A519 4140 Alloy Steel Seamless Pipe and Tubes packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage
Delivery: Within 10-25 days or asap if we have enough stock

Types of Packaging:
- Bundles (hexagonal)
- Wooden Boxes
- Crates (steel/wooden)
- Special crates for U-Bend tubes with each radius separated
- Packaging forA519 4140 Alloy Steel Seamless Pipe and Tubesas per customer's requirements
Special Features:
- Each bundle covered with plastic for protection against extreme weather.
- End of A335 Grade P5, P9, P11, P22, P91 Alloy Steel Seamless Pipe protected by plastic caps.
- Bundles strapped with plastic strips.
- Each radius of U-Bend tube separated by a separator.
- Packaging list (laminated) placed with box/crate.