4140 Hex Bars Manufacturer

Super Metal Manufacturing Co., based in Maharashtra, India, has been a leading steel fabricator and stockist since 1965. Known for their comprehensive alloy and stainless steel portfolio, they excel as a 4140 Hex Bars Manufacturer, specializing in hexagonal bar stock for demanding applications in automotive, machinery, infrastructure, and energy sectors.

Their 4140 hex bars are produced from high-grade AISI/SAE 4140 alloy steel, containing approximately 0.38–0.43% carbon, 0.80–1.10% chromium, 0.15–0.25% molybdenum, and 0.75–1.00% manganese, delivering a blend of high strength, toughness, and resilience.


Bars manufacturer

4140 hex bars are prized for their high tensile strength (up to ~1080 MPa), yield strength (~560 MPa), and excellent wear and fatigue resistance, while also offering good machinability post-annealing Rishabh Steel Alibaba These bars can also undergo quenching and tempering to enhance surface hardness and toughness for heavy-duty environments.

Material Specification Chart of 4140 / EN19 / 42CrMo4 Hex Bars

Specifications ASTM A182, ASME SA182
Standards EN, DIN, JIS, ASTM, BS, ASME, AISI
Range of A/F 10 mm To 250 mm
Finish Black, Bright Polished
Length 1000 mm Long To 6000 mm Long
Form Hex (A/F),Billet, Ingot, Forging Etc.

SAE 4140 / EN19 / 42CrMo4 Hex Bars

Country names India USA German British Japan China Australia
Country standards UNS AISI ASTM A29 DIN 17200 BS 970 JIS G4105 GB/T 3077 AS 1444
Grades G41400 4140 4140 1.7225/ 42CrMo4 EN 19 / 42CrMo4 SCM440 42CrMo 4140

Frequently Asked Questions (FAQ) – 4140 Hex Bars Manufacturer

Q1: What are the key applications of 4140 hex bars?

4140 hex bars are commonly used in high-stress components such as gears, shafts, fasteners, and tooling parts across automotive, aerospace, oil & gas, and heavy machinery industries.

Q2: Does Super Metal Manufacturing Co. provide third-party inspection certificates?

Yes. Super Metal Manufacturing Co. provides Mill Test Certificates (MTC) along with optional third-party inspection certificates from agencies like SGS, BV, or DNV, ensuring quality and compliance.

Q3: What sizes are available for 4140 hex bars?

4140 hex bars are typically available in sizes ranging from 17 mm to 65 mm across flats (AF). Custom sizes and lengths can be provided upon request to meet specific application needs.

Q4: What are the mechanical properties of 4140 hex bars?

4140 hex bars offer high tensile strength (850–1000 MPa), yield strength (~655 MPa), and excellent fatigue and wear resistance, especially when heat-treated or quenched and tempered.

Super Metal Manufacturing Co. is a well-established name in the Indian steel industry, known for its high-performance alloy steel products. As a reputed 4140 Hex Bars Manufacturer, the company delivers precision-engineered hex bars that meet demanding applications across various industries such as automotive, aerospace, oil & gas, and heavy machinery. With decades of expertise and a strong infrastructure, Super Metal offers unmatched quality, customization, and reliability.
Bars manufacturer


AISI 4140 is a chromium-molybdenum alloy steel known for its excellent tensile strength, high fatigue resistance, and toughness. It can be heat treated to achieve various mechanical properties depending on the application's stress requirements. Super Metal manufactures 4140 hex bars with high dimensional accuracy, consistent surface finish, and tight tolerances, making them suitable for machining and critical component manufacturing.

As a 4140 Hex Bars Manufacturer, Super Metal offers these bars in multiple finishes, including hot rolled, cold drawn, polished, ground, and bright bars. The hexagonal cross-section provides better grip and torque transmission, making it ideal for fasteners, tool holders, gears, shafts, and high-strength structural components.


Alloy Steel 4140 / EN19 / 42CrMo4 Hex Bars Dimensions Standard

Hex Size (Across Flats) Approx. Weight (kg/m) Tolerances (mm)
10 mm 0.67 kg/m ±0.30
12 mm 0.97 kg/m ±0.30
14 mm 1.33 kg/m ±0.30
17 mm 1.91 kg/m ±0.30
19 mm 2.45 kg/m ±0.30
22 mm 3.29 kg/m ±0.30
24 mm 3.80 kg/m ±0.30
27 mm 4.78 kg/m ±0.50
30 mm 5.88 kg/m ±0.50
32 mm 6.62 kg/m ±0.50
36 mm 8.50 kg/m ±0.50
41 mm 11.18 kg/m ±0.50
46 mm 14.01 kg/m ±0.50
50 mm 16.28 kg/m ±0.50

Application of AISI Alloy Steel 4140 / EN19 / 42crmo4 Round Bars

ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, 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, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.

Countries we have exported our products to:

Turkey, Thailand, Bulgaria, Serbia, Mexico, Estonia, Trinidad & Tobago,Tunisia, New Zealand, Indonesia, Puerto Rico, Ireland, India, Morocco, Brazil, Lebanon, Hong Kong, Jordan, Ukraine, Switzerland, Czech Republic, Lithuania, Sri Lanka, Greece, Taiwan, Zimbabwe, Algeria, Romania, Mexico, Ghana, Italy, Philippines, Spain, United Kingdom, Finland, Azerbaijan, Japan, Macau, Israel, Saudi Arabia, Kenya, Bhutan, Poland, Poland, Costa Rica, Kuwait, Singapore, Pakistan, France, Colombia, Tibet, Bolivia, Portugal, Iraq, Australia, Kazakhstan, Nepal, Mongolia, Gambia, Malaysia, Chile, Germany, Slovakia, China, Bahrain, Denmark, Angola, Afghanistan, Peru, Austria, Ecuador, Gabon, Croatia, South Africa, Sweden, Chile, Hungary, United Arab Emirates, Argentina, Bangladesh, Oman, Egypt, United States, Belgium, Canada, Namibia, Norway, Qatar, Belarus, Netherlands.

Cities we have supplied our products to:

Bengaluru, Vung Tau, Nashik, Jaipur, Navi Mumbai, La Victoria, Al Jubail, Noida, Granada, Doha, Dammam, Ernakulam, Chandigarh, Santiago, Melbourne, Surat, Nagpur, Ranchi, Kanpur, Jakarta, Ahvaz, Indore, Jamshedpur, Muscat, Rajkot, Lahore, Chiyoda, Milan, Hong Kong, Riyadh, Houston, Busan, Calgary, Madrid, Visakhapatnam, Atyrau, Bhopal, Algiers, Colombo, Kolkata, Petaling Jaya, Dallas, London, Cairo, Thiruvananthapuram, Caracas, Howrah, Moscow, Port-of-Spain, Baroda, Mexico City, Gurgaon, Singapore, Aberdeen, Coimbatore, Kuala Lumpur, Perth, Ahmedabad, New York, New Delhi, Manama, Abu Dhabi, Montreal, Jeddah, Pune, Vadodara, Kuwait City, Chennai, Geoje-si, Tehran, Mumbai, Hanoi, Karachi, Pimpri-Chinchwad, Thane, Haryana, Ulsan, Seoul, Dubai, Ho Chi Minh City, Toronto, Hyderabad, Los Angeles, Faridabad, Lagos, Sydney, Courbevoie, Bangkok, Bogota, Rio de Janeiro, Ankara, Al Khobar, Ludhiana, Istanbul, Gimhae-si, Brisbane, Edmonton, Sharjah, Secunderabad.

Cities we have supplied our products to:

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