We maintain a comprehensive stock of round bars in various sizes, lengths, and finishes to meet the diverse needs of our customers. Our inventory includes both black and bright bars, heat-treated and annealed conditions, and we ensure all products meet stringent quality standards and industry specifications. The bars are tested for hardness, tensile strength, and chemical composition to guarantee consistency and reliability in every batch we supply.
Material Specification Chart of 4140 / EN19 / 42crmo4 Round Bar
| Specifications | ASTM A182, ASME SA182 |
|---|---|
| Standards | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Range of Diameter | 5mm to 500mm |
| Finish | Bright, Black, Forged, Turned Bright |
| Length | 1000 mm Long To 6000 mm Long |
| Form | Round, Billet, Ingot, Forging Etc. |
SAE 4140/ EN19 / 42crmo4 Round Bars Grade
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
| 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 |
Our 4140 / EN19 / 42CrMo4 round bars are sourced from reputed manufacturers and mills with certification and traceability. We are committed to offering timely deliveries, competitive pricing, and customized cutting or machining services as per client requirements. Whether you're looking for raw material or semi-finished components, our team ensures you get the right solution for your engineering needs.
Additionally, we provide value-added services such as ultrasonic testing (UT), heat treatment, rough and precision machining, and export-quality packaging. We cater to industries both domestically and internationally, supplying to sectors such as aerospace, defense, construction, marine, and general engineering. Our customer-centric approach and technical expertise have made us a trusted name in the alloy steel stockist segment.
Alloy Steel 4140 / EN19 / 42crmo4 Round Bars Dimensions Standard
Diameter or
Width
(mm)
Weight per meter
Sectional Area
Perimeter
Round
(kg)
Round
(cm²)
Round
(cm)
5.0
0.15
0.20
1.57
5.5
0.19
0.24
1.78
6.0
0.22
0.28
1.88
7.0
0.30
0.38
2.20
8.0
0.39
0.50
2.51
9.0
0.50
0.64
2.83
10
0.63
0.79
3.14
11
0.75
0.95
3.46
12
0.89
1.13
3.77
14
1.21
1.54
4.40
16
1.58
2.01
5.03
18
2.00
2.54
5.65
20
2.47
3.14
6.28
22
2.98
3.80
6.91
25
3.85
4.91
7.85
28
4.83
6.16
8.80
32
6.31
8.04
10.05
36
7.99
10.18
11.31
40
9.86
12.57
12.57
45
12.49
15.90
14.14
50
15.41
19.64
15.71
56
19.34
24.63
17.59
63
24.47
31.17
19.79
71
31.08
39.59
22.31
80
39.46
50.27
25.13
Frequently Asked Questions (FAQs)
Q1: What are 4140 / EN19 / 42CrMo4 Round Bars?
A1: These are medium-carbon chromium-molybdenum alloy steel round bars known for their high tensile strength, toughness, and wear resistance. They are commonly used in engineering, automotive, and heavy-duty applications.
Q2: Are 4140, EN19, and 42CrMo4 the same material?
A2: Yes, they are equivalent grades under different international standards. 4140 is the AISI/SAE designation, EN19 is the British standard, and 42CrMo4 is the DIN/EN specification.
Q3: What sizes are available in 4140 / EN19 / 42CrMo4 round bars?
A3: These round bars are available in a wide range of diameters, typically from 20mm to 600mm, and can be customized in length and surface finish based on project requirements.
Q4: Do you provide material test certificates for these round bars?
A4: Yes, all 4140 / EN19 / 42CrMo4 round bars are supplied with test certificates such as EN 10204 3.1, ensuring compliance with international quality standards.
Applications & Uses of ASTM AISI 4140 Alloy Steel Round Bars
Application / Component
Use of 4140 Round Bar
Holder Blocks 4140 Round Bar used for Holder Blocks requiring high strength and dimensional stability. Mold Bases 4140 Round Bar used for Mold Bases offering toughness and wear resistance. Axle Shafts 4140 Round Bar used for manufacturing durable and impact-resistant Axle Shafts. Bolts & Fasteners 4140 Round Bar used for high-strength Bolts and Heavy-Duty Fasteners. Crankshafts 4140 Round Bar used for Crankshafts in engines due to superior fatigue strength. Couplings 4140 Round Bar used for Couplings where high tensile strength is required. Gears & Pinions 4140 Round Bar used for Gears, Pinions, and Sprockets in heavy machinery. Spindles 4140 Round Bar used for Machine Spindles and Lathe Spindles offering rigidity and precision. Piston Rods 4140 Round Bar used for Hydraulic Piston Rods and Rams due to toughness and machinability. Tool Holders 4140 Round Bar used for Tool Holders and Fixture Components in machining setups. Jigs & Fixtures 4140 Round Bar used for Jigs and Fixtures requiring high dimensional accuracy. Guide Rods 4140 Round Bar used for Precision Guide Rods and Linear Shafts. Collets & Chuck Bodies 4140 Round Bar used for Chuck Bodies, Collets, and Clamping Components. Hydraulic Shafts 4140 Round Bar used for Hydraulic Shafts & Components under high-pressure conditions. Logging Parts 4140 Round Bar used for Logging & Drilling Equipment due to its impact resistance. Conveyor Pins & Rolls 4140 Round Bar used for Conveyor Pins, Rolls, and Bearing Supports. Drill Collars & Tool Joints 4140 Round Bar used in Oilfield Tools such as Drill Collars and Tool Joints. Machine Components 4140 Round Bar used for Heavy Machine Components and Shafts. Gear Racks 4140 Round Bar used for Gear Racks and Power Transmission Systems. Forks & Levers 4140 Round Bar used for Forks, Levers, and Steering Components. Motor Shafts 4140 Round Bar used for Electric Motor Shafts requiring precise balancing. Tie Rods 4140 Round Bar used for Tie Rods in heavy-duty mechanical linkages. Camshafts 4140 Round Bar used for Camshafts with high surface hardness and strength. Reamer Bodies 4140 Round Bar used for Reamer Bodies and Boring Tools. Bearing Housings 4140 Round Bar used for Bearing Housings and Support Frames. Axles & Shafting 4140 Round Bar used for Axles and Power Transmission Shafting. Pump Shafts 4140 Round Bar used for Pump Shafts and Rotors under fluid pressure. Lathe Spindles 4140 Round Bar used for Lathe Spindles providing stability and smooth rotation. Die Holders 4140 Round Bar used for Die Holders and Press Tool Components. Brake Dies & Trim Dies 4140 Round Bar used for Brake Dies, Trim Dies, and Press Dies. Tooling Back-Up Plates 4140 Round Bar used for Back-Up Plates in Tooling Applications. Forming & Forging Dies 4140 Round Bar used for Forging Dies and Forming Tools requiring toughness. Hydraulic Press Parts 4140 Round Bar used for Hydraulic Press Columns, Rams, and Guides. Marine Shafts 4140 Round Bar used for Marine Propeller Shafts & Deck Equipment. Aerospace Tooling 4140 Round Bar used for Aerospace Fixtures and Assembly Tooling. Defence Components 4140 Round Bar used for Defence Hardware, Launch Tubes & Armament Parts. Power Plant Equipment 4140 Round Bar used for Turbine Shafts and Rotating Components in Power Plants. Oil & Gas Equipment 4140 Round Bar used for Oilfield Equipment, Wellhead Components & Drilling Tools. Construction Machinery 4140 Round Bar used for Excavator Pins, Loader Shafts & Heavy Construction Parts. Railway Components 4140 Round Bar used for Railway Axles, Brackets & Suspension Pins. Mining Equipment 4140 Round Bar used for Mining Shafts, Crusher Pins & Wear Parts. Windmill Shafts 4140 Round Bar used for Wind Turbine Shafts and Mechanical Hubs.
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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| Diameter or Width (mm) |
Weight per meter | Sectional Area | Perimeter |
| Round (kg) |
Round (cm²) |
Round (cm) |
|
| 5.0 | 0.15 | 0.20 | 1.57 |
| 5.5 | 0.19 | 0.24 | 1.78 |
| 6.0 | 0.22 | 0.28 | 1.88 |
| 7.0 | 0.30 | 0.38 | 2.20 |
| 8.0 | 0.39 | 0.50 | 2.51 |
| 9.0 | 0.50 | 0.64 | 2.83 |
| 10 | 0.63 | 0.79 | 3.14 |
| 11 | 0.75 | 0.95 | 3.46 |
| 12 | 0.89 | 1.13 | 3.77 |
| 14 | 1.21 | 1.54 | 4.40 |
| 16 | 1.58 | 2.01 | 5.03 |
| 18 | 2.00 | 2.54 | 5.65 |
| 20 | 2.47 | 3.14 | 6.28 |
| 22 | 2.98 | 3.80 | 6.91 |
| 25 | 3.85 | 4.91 | 7.85 |
| 28 | 4.83 | 6.16 | 8.80 |
| 32 | 6.31 | 8.04 | 10.05 |
| 36 | 7.99 | 10.18 | 11.31 |
| 40 | 9.86 | 12.57 | 12.57 |
| 45 | 12.49 | 15.90 | 14.14 |
| 50 | 15.41 | 19.64 | 15.71 |
| 56 | 19.34 | 24.63 | 17.59 |
| 63 | 24.47 | 31.17 | 19.79 |
| 71 | 31.08 | 39.59 | 22.31 |
| 80 | 39.46 | 50.27 | 25.13 |
Frequently Asked Questions (FAQs)
Q1: What are 4140 / EN19 / 42CrMo4 Round Bars?
A1: These are medium-carbon chromium-molybdenum alloy steel round bars known for their high tensile strength, toughness, and wear resistance. They are commonly used in engineering, automotive, and heavy-duty applications.
Q2: Are 4140, EN19, and 42CrMo4 the same material?
A2: Yes, they are equivalent grades under different international standards. 4140 is the AISI/SAE designation, EN19 is the British standard, and 42CrMo4 is the DIN/EN specification.
Q3: What sizes are available in 4140 / EN19 / 42CrMo4 round bars?
A3: These round bars are available in a wide range of diameters, typically from 20mm to 600mm, and can be customized in length and surface finish based on project requirements.
Q4: Do you provide material test certificates for these round bars?
A4: Yes, all 4140 / EN19 / 42CrMo4 round bars are supplied with test certificates such as EN 10204 3.1, ensuring compliance with international quality standards.
| Application / Component | Use of 4140 Round Bar |
|---|---|
| Holder Blocks | 4140 Round Bar used for Holder Blocks requiring high strength and dimensional stability. |
| Mold Bases | 4140 Round Bar used for Mold Bases offering toughness and wear resistance. |
| Axle Shafts | 4140 Round Bar used for manufacturing durable and impact-resistant Axle Shafts. |
| Bolts & Fasteners | 4140 Round Bar used for high-strength Bolts and Heavy-Duty Fasteners. |
| Crankshafts | 4140 Round Bar used for Crankshafts in engines due to superior fatigue strength. |
| Couplings | 4140 Round Bar used for Couplings where high tensile strength is required. |
| Gears & Pinions | 4140 Round Bar used for Gears, Pinions, and Sprockets in heavy machinery. |
| Spindles | 4140 Round Bar used for Machine Spindles and Lathe Spindles offering rigidity and precision. |
| Piston Rods | 4140 Round Bar used for Hydraulic Piston Rods and Rams due to toughness and machinability. |
| Tool Holders | 4140 Round Bar used for Tool Holders and Fixture Components in machining setups. |
| Jigs & Fixtures | 4140 Round Bar used for Jigs and Fixtures requiring high dimensional accuracy. |
| Guide Rods | 4140 Round Bar used for Precision Guide Rods and Linear Shafts. |
| Collets & Chuck Bodies | 4140 Round Bar used for Chuck Bodies, Collets, and Clamping Components. |
| Hydraulic Shafts | 4140 Round Bar used for Hydraulic Shafts & Components under high-pressure conditions. |
| Logging Parts | 4140 Round Bar used for Logging & Drilling Equipment due to its impact resistance. |
| Conveyor Pins & Rolls | 4140 Round Bar used for Conveyor Pins, Rolls, and Bearing Supports. |
| Drill Collars & Tool Joints | 4140 Round Bar used in Oilfield Tools such as Drill Collars and Tool Joints. |
| Machine Components | 4140 Round Bar used for Heavy Machine Components and Shafts. |
| Gear Racks | 4140 Round Bar used for Gear Racks and Power Transmission Systems. |
| Forks & Levers | 4140 Round Bar used for Forks, Levers, and Steering Components. |
| Motor Shafts | 4140 Round Bar used for Electric Motor Shafts requiring precise balancing. |
| Tie Rods | 4140 Round Bar used for Tie Rods in heavy-duty mechanical linkages. |
| Camshafts | 4140 Round Bar used for Camshafts with high surface hardness and strength. |
| Reamer Bodies | 4140 Round Bar used for Reamer Bodies and Boring Tools. |
| Bearing Housings | 4140 Round Bar used for Bearing Housings and Support Frames. |
| Axles & Shafting | 4140 Round Bar used for Axles and Power Transmission Shafting. |
| Pump Shafts | 4140 Round Bar used for Pump Shafts and Rotors under fluid pressure. |
| Lathe Spindles | 4140 Round Bar used for Lathe Spindles providing stability and smooth rotation. |
| Die Holders | 4140 Round Bar used for Die Holders and Press Tool Components. |
| Brake Dies & Trim Dies | 4140 Round Bar used for Brake Dies, Trim Dies, and Press Dies. |
| Tooling Back-Up Plates | 4140 Round Bar used for Back-Up Plates in Tooling Applications. |
| Forming & Forging Dies | 4140 Round Bar used for Forging Dies and Forming Tools requiring toughness. |
| Hydraulic Press Parts | 4140 Round Bar used for Hydraulic Press Columns, Rams, and Guides. |
| Marine Shafts | 4140 Round Bar used for Marine Propeller Shafts & Deck Equipment. |
| Aerospace Tooling | 4140 Round Bar used for Aerospace Fixtures and Assembly Tooling. |
| Defence Components | 4140 Round Bar used for Defence Hardware, Launch Tubes & Armament Parts. |
| Power Plant Equipment | 4140 Round Bar used for Turbine Shafts and Rotating Components in Power Plants. |
| Oil & Gas Equipment | 4140 Round Bar used for Oilfield Equipment, Wellhead Components & Drilling Tools. |
| Construction Machinery | 4140 Round Bar used for Excavator Pins, Loader Shafts & Heavy Construction Parts. |
| Railway Components | 4140 Round Bar used for Railway Axles, Brackets & Suspension Pins. |
| Mining Equipment | 4140 Round Bar used for Mining Shafts, Crusher Pins & Wear Parts. |
| Windmill Shafts | 4140 Round Bar used for Wind Turbine Shafts and Mechanical Hubs. |