SAE 4140 Round Bars

SAE 4140 Bars, Alloy 4140 Round Bar Suppliers and Dealer in Mumbai, India.

SAE 4140 Forged Bars Exporter, Supplying Alloy Steel SAE 4140 Round Bar, Stocking AISI 4140, Distributing SCM 440 Bars, UNS G41400 Alloy Steel Round Bar Manufacturer in India. DIN 1.7225 42CrMo4 Available in Shapes like Round, Hex, Flat, Rectangular, Machined, Forged Etc. in Hot Rolled and Cold Rolled Form.

AISI 4140, SAE 4140, ASTM A29 4140 ROUND BAR, EN 10250 42CRMO4, 1.7225, JIS G4105 SCM 440, STEEL RODProsaic Steel and Alloy is one of the well-known exporter and Distributor of SAE 4140 Round Bars, engineering alloy steel containing chromium and molybdenum. It falls in a class of low alloy steel. SAE 4140 Bars has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. It can be heat treated in a number of ways to give it a superior combination of properties. AISI 4140 is a 1% chromium – molybdenum medium hardened general purpose high tensile steel – generally supplied hardened and tempered in the tensile range of 850 – 1000 MPa.

SAE 4140 Round Bars are widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears, adapters, Arbors, Axle Shafts, Bolts, Crankshafts, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts, Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pins Various, Pinions, Pump Shafts, Rams, Sockets, Spindles, Sprockets, Studs, Tool Holders, Torsion Bars, Worms etc.. and other applications.



SAE 4140 Round Bar Specifications

Form : Cold Rolled, Hot Rolled and Forged
Specifications and Grades : SAE 4140, AISI 4140, ASTM A29 4140, ASME A29 4140, ASTM A331 4140 (Cold Finish), SCM 440, UNS G41400, AS 1444-1996-4140,DIN 17212 W.Nr 1.7223 Type 41CrMo4, DIN 17200-1654 W.Nr 1.7225 Type 42CrMo4, BS970-1955 EN19A, BS970 Part 3:1991 709M40,ISO 683/II Type 3, isO 683/IV Type 3a, isO 683/IV Type 3b, JIS G 4105 SCM440
SAE 4140 Bar Outer Diameter Range
 : 5mm to 500mm Dia in 100mm to 6000mm Length
SAE 4140 Bar Length
 : 100mm to 6000mm Length or Customised as per Client
Finish : Black, Forged, Bright Polished, Rough Turned, Machined
Other Shapes Available : Round, Square, Hex (A/F), Flat, Rectangle, Billet, Ingot, Forging Etc.
High Quality :
  • Huge Stock, Timely delivery
  • Raw Materials Certificate
  • EN 10204/3.1B
  • 100% Radiography Test Report
  • High special strength, high melt point
  • Third Party Inspection Report, etc
  • Excellent corrosive resistance, good thermal resistance
  • Customer support after-sales service
  • Strict Control from Raw Material to Finished Product

SAE 4140 Round Bar Chemical Composition

Standard Grade C Mn P S Si Ni Cr Mo
SAE 4140 4140 0.38-0.43 0.75-1.00 0.035 0.040 0.15-0.35 0.25 0.8-1.10 0.15-0.25
AISI 4140 4140 0.38-0.43 0.75-1.00 0.035 0.040 0.15-0.35 0.25 0.8-1.10 0.15-0.25
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/
1.7225		 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

SAE 440 Round Bars 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

SAE 4140 Round Bar Forging

Preheat the steel carefully, heat to 1150℃ – 1200℃ maximum, hold until temperature is uniform throughout the section. Do not forge below 850℃. Following forging operation the work piece should be cooled as slowly as possible.

SAE 4140 Round Bar Heat Treatment

4140 Annealing
Heat ASTM 4140 steels to 800℃ – 850℃, hold until temperature is uniform throughout the section and cool in furnace.

4140 Normalizing
Heat steel alloy 4140 to 870℃ – 900℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.

4140 Tempering
Re-heat 4140 grade steel to 550℃ – 700℃ as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

Hardening of SAE 4140 Round Bar

AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.

SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840℃ – 875℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.

SAE 4140 Round Bar Price List

  • SAE 4140 Alloy steel bars
    US $1000-2500 / Ton
  • AISI 4140 Alloy Steel rods
    US $2000-3000 / Ton
  • 4140 Square bar
    US $1.5-4.5 / Kilogram
  • SCM 440 Barsbar
    US $1800-2300 / Ton
  • DIN 1.7225 42CrMo4
    US $1800-2300 / Ton
  • UNS G41400 Alloy Steel Round Bar
    US $1300-2600 / Metric Ton

SAE 4140 Round Bar Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

SAE 4140 Rods Test Certificates

We provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

  • EN 10204/3.1B,
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • Third Party Inspection Report, etc

ASTM, ASME, SAE, AISI 4140 Bars Value Added Services

Material Testing:

We at Prosaic Steel and Alloy ensure that all our materials go through strict quality tests before dispatching them to our clients.

  • Mechanical Testing Such as Tensile of Area
  • Hardness Test
  • Chemical Analysis – Spectro Analysis
  • Positive Material Identification – PMI Testing
  • Flattening Test
  • Micro and MacroTest
  • Pitting Resistance Test
  • Flaring Test
  • Intergranular corrosion (IGC) Test

4140 Round Bar Documentation

  • Commercial Invoice which includes HS Code
  • Packing List including net weight and gross weight, number of boxes, Marks and Numbers
  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Fumigation Certificates
  • Raw Material Test Reports
  • Material Traceability Records
  • Quality Assurance Plan (QAP)
  • Heat Treatment Charts
  • Test Certificates certifying NACE MR0103, NACE MR0175
  • Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
  • Guarantee Letter
  • NABL approved Laboratory Test Reports
  • Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
  • Form A for the purposes of the Generalized System of Preferences (GSP)

We export SAE 4140 Round Bar Manufacturer Supplier to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, europe, Africa, Asia, North America, South America, Middle East, Far East.etc

Prosaic Steel and Alloys is a well known worldwide exporter of SAE 4140 Round Bar Manufacturer Supplier is committed to provide each and every customer with the highest standard of customer service. We deals in SAE 4140 Round Bar Manufacturer Supplier in India & Overseas, offering a wide range of AISI 4140 Round Bar Manufacturer Supplier

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