AISI 4140 Alloy Steel Seamless Tube supplier in India

ASTM A519 grade 4140 Dom Tubing and and 42crmo4 Tool Steel Pipe manufacturer and exporter in Mumbai.

Low alloy steels are ideal for those applications that need to be economical while also being efficient. Cheaper than stainless steel, the small additions of different elements in their chemical composition give them significantly higher mechanical properties. Moreover, there is an increase in their corrosion resistance properties as well. Alloy 4140 is a type of low steel alloy whose chemical composition includes chromium, molybdenum, and manganese. Manganese included in its chemistry improves the toughness of the AISI 4140 Tube, with chromium and molybdenum imparting ductility. The other properties of this alloy grade include hardenability and high tensile strength, which is valued at 655 Mpa. Steel alloys are usually given a heat treatment to improve their mechanical properties. Conventional methods may be employed to anneal this alloy. Yet, due to the alloy being tougher than most carbon steel alloy, the force employed to form the UNS G41400 q&t Tube is significantly higher.  Annealing is practiced in grade 4140 to reduce the presence of residual dresses, while also improving their ductility. It is common for an AISI 4140 Alloy Steel Seamless Tube Supplier to supply these components in a quenched and tempered condition. While tempering, improves the hardness and the tensile strength of the alloy, quenching improves its hardness. Since the alloy has high toughness and hardness, the AISI 4140 qt Alloy steel Square Tubing material tends to have better resistance to abrasion. And therefore, it would be really hard for external forces to damage the surface of the pipes. The alloy also has high torsional strength. It is common for materials to experience fatigue, however, the SAE 4140 qt Steel Round Tube exhibits high resistance to fatigue.

AISI 4140 Tube Suppliers

AISI 4140 Tube Suppliers

SAE 4140 QT Tube

SAE 4140 QT Tube

AISI 4140 QT Tubing

Table of Content


Looking for 4140 tube suppliers in your country? Saudi Aramco approved exporter of Din 1.7225 SAE 4140 Steel Round Tubes in India.


Specification Table of AISI 4140 Tube

Dimensions ASTM, ASME and API
Supplier of 4140 Alloy Steel Tube
in Length		 Within 13500 millimeter
Speciality in Large Diameter Size
Size 4 to 219 millimeter W. T.: 0.5 to 20 millimeter
Length In Single and Double Random & Cut to Length Suppliers
AISI 4140 Tube Type Welded / Seamless / Fabricated / ERW
Form Round, Square, Rectangular, Hydraulic.
End Plain End, Threaded, Beveled End

Chemical Composition of AISI 4130 Square tube

Standard Grade C Mn P S Si Ni Cr Mo
ASTM A29 4140 0.38-0.43 0.75-1.00 0.035 0.040 0.15-0.35 – 0.8-1.10 0.15-0.25
EN 10250 42CrMo4/
1.7224		 0.38-0.45 0.6-0.9 0.035 0.035 0.4 – 0.9-1.2 0.15-0.30
JIS G4105 SCM440 0.38-0.43 0.60-0.85 0.03 0.03 0.15-0.35 – 0.9-1.2 0.15-0.30

Mechanical Properties of 4140 Seamless Tubing

Properties Metric Imperial
Hardness, Vickers (converted from Brinell hardness) 207 207
Tensile strength 655 MPa 95000 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Yield strength 415 MPa 60200 psi
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) 13 13
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%
Shear modulus (typical for steel) 80 GPa 11600 ksi
Hardness, Brinell 197 197
Machinability (based on AISI 1212 as 100 machinability) 65 65
Hardness, Rockwell B (converted from Brinell hardness) 92 92
Hardness, Knoop (converted from Brinell hardness) 219 219

Know Heat Treatment done on SAE 4140 qt Steel Round Tube, Contact us for pricing of AISI 4140 QT Square tubing.


AISI 4140 Steel Pipe Grade Heat Treatment

Annealing 800 oC – 850 oC
Normalizing 870 oC – 900 oC
Tempering 550 oC – 700 oC

4140 Alloy steel tube Equivalent

Standard/ Grade UNS Temper Specification
AISI 4140 Alloy Steel UNS G41400 A, N, T AMS6381

Physical Strength of AISI 4140 Round tube

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

Carbon steel 4140 Boiler Tubing Stocking Distributor, We provide Minimum Quantity of UNS G41400 q&t Tube.

Weight Table of ASTM A519 Grade 4140 Tubes

We are Manufacturer and Supplier of AISI 4140 Rectangular tube as per below mentioned different weights.

Size NPS Tube O.D. Wall Thickness Tube I.D. Weight per Foot Standard to XXHYSchedule
Tube # 		Section Modulus Gallon Capacity Per Linear Foot
1/20.840.1090.6220.85STD40.0407.0158
  0.1470.5461.09XHY80.0478.0122
  0.1880.4641.31 160.0528.0088
  0.2940.2521.72XXHY .0577.0026
3/41.050.1130.8241.13STD40.0705.0277
  0.1540.7421.48XHY80.0853.0225
  0.2190.6121.95 160.1006.0153
  0.3080.4342.44XXHY .1103.0077
11.3150.1331.0491.68STD40.1328.0449
  0.1790.9572.17XHY80.1606.0374
  0.2500.8152.85 160.1904.0271
  0.3580.5993.66XXHY .2136.0146
1 1/4 1.660.1401.3802.27STD40.2346.0777
  0.1911.2783.00XHY80.2913.0666
  0.2501.1603.77 160.3421.0549
  0.3820.8965.22  .4110.0328
1 1/2 1.900.1451.6102.72STD40.3262.1058
  0.2001.5003.63XHY80.4118.0918
  0.2811.3384.86 160.5079.0730
  0.4001.1006.41  .5977.0494
22.3750.1092.1572.64 10.4205.1898
  0.1542.0673.66STD40.5606.1743
  0.2181.9395.03XHY80.7309.1534
  0.2501.8755.68  .8045.1434
  0.2811.8136.29  .8666.1344
  0.3441.6877.47 160.9806.1161
  0.4361.5039.04XXHY 1.1043.0922
2 1/2 2.8750.1202.6353.53 10.6870.2833
  0.2032.4695.80STD.401.0640.2487
  0.2162.4436.14  1.1169.2435
  0.2502.3757.02  1.2468.2301
  0.2762.3237.67XHY801.3386.2202
  0.3752.12510.02 1601.6371.1842
  0.5521.77113.71XXXHY 1.9971.1280
33.500.1203.2604.34  1.0411.4336
  0.1563.1885.58  1.3122.4147
  0.1723.1566.12  1.4265.4064
  0.1883.1246.66  1.5342.3984
  0.2163.0687.58STD.401.7241.3840
  0.2503.0008.69  1.9372.3672
  0.2812.9389.67  2.1207.3521
  0.3002.90010.26XHY802.2253.3431
  0.4382.62414.34 1602.8774.2811
  0.6002.30018.6XXHY 3.4243.2158
3 1/2 4.00.1203.7604.98 101.3776.5768
  0.2263.5489.12STD.1402.3939.5136
  0.2503.50010.02  2.6001.4998
  0.2813.43811.17  2.8562.4821
  0.3183.36412.52XHY803.1400.4617
  0.6362..72822.87XXHY 4.8795.3085
44.50.1204.2605.62 101.7612.7404
  0.1564.1887.24  2.2354.7156
  0.1884.1248.67  2.6296.6942
  0.2034.0949.32  2.8173.6838
  0.2194.06210.02  3.0184.6725
  0.2374.02610.80STD.403.2145.6613
  0.2504.00011.36  3.3611.6528
  0.2813.93812.67 603.7021.6326
  0.3123.87613.97  4.0273.6126
  0.3373.82615.00XHY804.2713.5972
  0.4383.62419.02 1205.1790.5361
  0.5313.43822.53 1605.8997.4822
  0.6743.15227.57XXHY 6.7927.4054
55.5630.1885.18710.80  4.11611.0979
  0.2195.12512.51  4.72791.0716
  0.2585.04714.63STD.405.45001.0391
  0.2815.00115.87  5.86441.0204
  0.3124.93917.51  6.4074.99647
  0.3444.87519.19  6.9358.9696
  0.3754.81320.80XHY807.4300.9449
  0.5004.56327.06 1209.2534.8495
  0.6254.31332.99 16010.7976.7590
  0.7504.06338.59XXHY 12.0954.6734
66.6250.1096.4077.59 53.57691.6748
  0.1346.3579.30 104.34751.6488
  0.1566.31310.79  5.01071.6260
  0.1886.24912.94  5.93511.5937
  0.2036.21913.94  6.38041.5780
  0.2196.18715.00  6.82611.5620
  0.2506.12517.04  7.69051.5306
  0.2806.06518.99STD.408.49581.5008
  0.3126.00121.06  9.34161.4688
  0.3445.93723.10  10.1111.4391
  0.3755.87525.05  10.8931.4082
  0.4325.76128.60XHY8012.2241.3541
  0.5005.62532.74  13.7111.2909
  0.5625.50136.43 12014.98061.2346
  0.6255.37540.09  16.18211.1787
  0.7195.18745.39 16017.82431.0977
  0.8644.89753.21XXHY 20.025.9784
  1.0004.62560.13  21.7719.8727
  1.1254.37566.14  23.1237.7809

Check Availability of SAE 4140 Chrome Moly Welded Tube with wide sizes range, 4140 Alloy Steel Seamless Tubing.

Suppliers of UNS G41400 q&t Tube in various Sizes

NB Size OD 40S 5S 10S S10 S20 S40 S60 XS/80S S80 S100 S120 S140 S160 XXS
mm mm mm mm mm mm mm mm mm mm mm mm mm mm mm
1/8"10.29 1.2 1.73 2.41
1/4"13.72 1.7 2.24 3.02
3/8"17.15 1.7 2.31 3.2
151/2"21.342.81.72.1 2.77 3.733.73 4.787.47
203/4"26.672.91.72.1 2.87 3.913.91 5.567.82
251"33.43.41.72.8 3.38 4.554.55 6.359.09
321 1/4"42.163.61.72.8 3.56 4.854.85 6.359.7
401 1/2"48.263.71.72.8 3.68 5.085.08 7.1410.2
502"60.333.91.72.8 3.91 5.545.54 9.7411.1
652 1/2"73.035.22.13.1 5.16 7.017.01 9.5314
803"88.95.52.13.1 5.49 7.627.62 11.115.2
903 1/2"101.65.72.13.1 5.74 8.088.08
1004"114.362.13.1 6.02 8.568.56 11.1 13.517.1
1255"141.36.62.83.4 6.55 9.539.53 12.7 15.919.1
1506"168.37.12.83.4 7.11 10.9711 14.3 18.322
2008"219.18.22.83.8 6.48.1810.312.712.715.119.320.62322.2
25010"273.19.33.44.2 6.49.2712.712.715.119.321.425.428.625.4
30012"323.99.544.6 6.410.314.312.717.521.425.428.633.325.4
35014"355.69.544.86.47.911.115.112.719.123.827.831.835.7
40016"406.49.54.24.86.47.912.716.712.721.426.23136.540.5
45018"457.29.54.24.86.47.914.319.112.723.829.434.939.745.2
50020"5089.54.85.56.49.515.120.612.726.232.538.144.550
55022"558.89.54.85.56.49.5 22.212.728.634.941.347.654
60024"609.69.55.56.46.49.517.524.612.73138.94652.459.5
65026"660.49.5 7.913 12.7
70028"711.29.5 7.913 12.7
75030"7629.56.47.97.913 12.7
80032"812.89.5 7.91317.5 12.7
85034"863.69.5 7.91317.5 12.7
90036"914.49.5 7.91319.1 12.7

Most commonly used Types of AISI 4140 Tube Suppliers in India

Carbon Steel 4140 Q&T Round Tubing
Carbon Steel 4140 Q&T Round Tubing
4140 Alloy Steel Rectangular Tube
4140 Alloy Steel Rectangular Tube
UNS G41400 q&t Cold Drawn Tube
UNS G41400 q&t Cold Drawn Tube

SAE 4140 Seamless Tubing
SAE 4140 Seamless Tubing
AISI 4140 low alloy steel erw tube
AISI 4140 low alloy steel erw tube
SAE 4140 qt Hot Rolled Tube
SAE 4140 qt Hot Rolled Tube

Mechanical Analysis Requirements for 4140 Square Tube Heat-Treated

Mechanical Property Designation R S S *T U V W
Limited Ruling Section mm 250 250 150 100 63 30 20
Tensile Strength Mpa Min 700 770 770 850 930 1000 1080
Max 850 930 930 1000 1080 1150 1230
0.2% Proof Stress Mpa Min 480 540 570 655 740 835 925
Elongation on
5.65√S0 %		 Min 15 13 15 13 12 12 12
Izod Impact J Min 34 27 54 54 47 47 40
Charpy Impact J Min 28 22 50 50 42 42 35
Hardness Brinell HB Min 201 233 233 248 269 293 311
Max 255 277 277 302 331 352 375
*Material stocked generally in condition T
Check test certificate if critical for end use.

Mechanical Strength Requirements for 4140 Chromoly Steel tube in the Heat-Treated Condition for Turned

Mechanical Property Designation R S T U V
Limited Ruling Section 63 63 63 63 63
Tensile Strength Mpa Min 700 770 850 930 1000
Max 850 930 1000 1080 1150
0.20% Proof Stress Mpa Min 525 585 680 755 850
Elongation on 5.65√S0 % Min 12 11 9 9 9
Hardness Brinell HB Min 201 223 248 269 293
Max 255 277 302 331 352
*Material stocked generally in condition T
Check test certificate if critical for end use.

Pre-heat temperature for 4140 Dom Tubing

Get free quote from SAE 4140 Annealed tube Suppliers in India

Section 25mm 40mm 50mm 75mm 150mm +
oC 370 400 425 455 510

We Maintain Stock in Following Places

1.25 Inch, ASTM A519 Grade 4140 Seamless Tube, 2.76 Milli. Russia, Kochi, Dubai, Dehradun, Malaysia, Netherlands
4140 Alloy Steel SMLS Tube, BWG 18, 3/4 Inch Europe, Thailand, Sikandrabad, Qatar, France, Bengaluru
19.05 * 2.11 * 6400 Milli., SAE 4140 Steel Tube Rajkot, China, Malaysia, Sweden, Vadodara, Colombia
4300 millimetre Length, AISI Sae 4140 U Tube, PE, OD 19.05 millimetre Europe, Malaysia, Faridabad, Chandigarh, Japan, Romania
42crmo4 AISI 4140 Tube, ASTM A519, Plain Ends Chennai, Czechia, Germany, Thailand, Malaysia, Thiruvananthapuram
1 Inch OD, AS1444 Grade 4140 Seamless Tube, BWG 12 WT Noida, Indonesia, Mumbai, Philippines, Dammam -KSA, Belgium
1 Inch, AISI 4140h Seamless Tube, Beveled Ends, 4.88M Finland, Malaysia, Surat, Bangladesh, Pune, USA
Cold Drawn, AISI 4140 Scm440 Seamless Boiler Tube, PE Norway, Turkey, United Arab Emirates (UAE), Coimbatore, Malaysia
AISI 4140 42crmo4 Finned Tube, WT 0.25-0.45 millimeter, OD 25-88 millimeter Europe, Indore, Malaysia, United Kingdom -UK, UAE
3/4IN, ASTM A519 UNS G41400 Copper Alloy Seamless Tube, BWG 18 Lucknow, UK, Nagpur, Spain, Mexico, Egypt, Nashik
0.049 Inch, AISI 4140 Tube, 20 Feet, 3/8 Inch Singapore, Agra, Kolkata, South Africa, Bahrain
THK 2.1 millimeter, AISI 4140 Steel Seamless Finned Tube, PE End 139.7 millimetre Los Alamos -Mexico, Philippines, Taiwan, Malaysia, Bhuneshwar
OD 3/4 Inch, UNS G41400 Seamless Alloy Steel Pipe Tube, Thickness 1.65 millimetre Malaysia, Singapore, Gurgaon, NY 12203 (USA), South Korea
1.2 millimetre, 4140 Tool Steel Seamless Tube, Length 7300 millimeter, OD 26.7 millimeter Ellington -United States, Canada, Poland, UK, Navi Mumbai
ASTM A519 grade 4140 Seamless tubing, 12.7 X 6000 X 1.65 millimeter Philippines, Hyderabad, Thane, Australia, France, UK, Nigeria
OD 16 millimetre, U-Tube, 42crmo4 AISI 4140 Grade Steel, 9000 millimeter, WT 1.2 millimetre Oman, UAE, Patna, Malaysia, Hong Kong, Ahmedabad
38.1 millimeter, 4140 Alloy Steel Seamless Boiler Tube, 3.66 millimetre Taiwan, Los Alamos -Mexico, Philippines, Malaysia, Bhuneshwar
9.536 Meters, 9.536 Meters, SAE 4140 Steel Heat Exchanged Tube, Plain Ends Delhi, Singapore, Chile, Bhopal, Italy, Visakhapatnam, Visakhapatnam, Iran
OD 50.8 millimeter, AISI Sae 4140 Seamless Tube, WT 3.5 millimeter Brazil, Kuwait, Ahmedabad, South Africa, Saudi Arabia (KSA)
UNS G41400 Cold Drawn Boiler Tube, OD 19 - 76.2 millimeter Malaysia, Jaipur, Ludhiana, Singapore, Canada, Philippines