Heat treatment plays a crucial role in tailoring its properties. Common methods include annealing, normalizing, and quenching & tempering (Q+T). Annealed bars are softer and easier to machine; quenched and tempered bars reach 28–34 HRC hardness, suitable for demanding mechanical applications.
Material Specification Chart of EN19 / 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 EN19/ 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
GEN190
EN19
EN19
1.7225/ 42CrMo4
EN 19 / 42CrMo4
SCM440
42CrMo
EN19
| 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 | GEN190 | EN19 | EN19 | 1.7225/ 42CrMo4 | EN 19 / 42CrMo4 | SCM440 | 42CrMo | EN19 |
Globally, this steel is referenced by various designations—EN19 (BS970), EN19 (AISI/SAE), 42CrMo4 (DIN/ISO), and equivalents like 709M40, 708M40, 1.7225—highlighting its widespread adoption and standardization New Arise Metal textronsteelalloys.com Sizes and surface finishes are flexible: available as hot-rolled, forged, cold-drawn bright bars, in diameters ranging from a few millimeters up to over 1000 mm
EN19 / EN19 / 42CrMo4 Round Bars are widely recognized for their exceptional mechanical strength, toughness, and high fatigue resistance. These bars are medium carbon alloy steels containing chromium, molybdenum, and manganese, making them ideal for high-stress engineering applications. Known by various designations globally—EN19 (British Standard), EN19 (AISI/SAE), and 42CrMo4 (DIN/ISO)—they all refer to the same versatile material with broad international acceptance. This multi-standard recognition makes these round bars suitable for export, OEM manufacturing, and critical industrial uses
Alloy Steel EN19 / 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)
1. What are EN19 / EN19 / 42CrMo4 Round Bars used for?
These alloy steel round bars are used in manufacturing high-stress components such as crankshafts, gears, axles, spindles, bolts, and machine shafts. They are widely used in the automotive, aerospace, defense, and heavy engineering industries due to their excellent strength and wear resistance.
2. Are EN19, EN19, and 42CrMo4 the same material?
Yes. EN19 (British standard), AISI EN19 (American standard), and 42CrMo4 (European standard) refer to the same alloy steel with slightly different naming conventions and specifications according to regional standards.
3. What is the hardness of EN19 / EN19 / 42CrMo4 bars after heat treatment?
After quenching and tempering, these bars can achieve a hardness of around 28 to 34 HRC, depending on the heat treatment process and section size. This makes them suitable for components requiring high wear and impact resistance.
4. What sizes and finishes are available for EN19 / EN19 / 42CrMo4 round bars?
They are available in a wide range of diameters from 16 mm up to 800 mm or more, and in various finishes such as hot rolled, forged, cold drawn, peeled, or ground, depending on the supplier and application requirement.
5. Can EN19 / EN19 / 42CrMo4 round bars be welded?
Yes, they can be welded, but special care must be taken due to the high hardenability of the alloy. Preheating and post-weld heat treatment are usually recommended to avoid cracking and ensure proper weld strength.
Applications & Uses of ASTM AISI EN19 Alloy Steel Round Bars
Application / Component
Use of EN19 Round Bar
Holder Blocks EN19 Round Bar used for Holder Blocks requiring high strength and dimensional stability. Mold Bases EN19 Round Bar used for Mold Bases offering toughness and wear resistance. Axle Shafts EN19 Round Bar used for manufacturing durable and impact-resistant Axle Shafts. Bolts & Fasteners EN19 Round Bar used for high-strength Bolts and Heavy-Duty Fasteners. Crankshafts EN19 Round Bar used for Crankshafts in engines due to superior fatigue strength. Couplings EN19 Round Bar used for Couplings where high tensile strength is required. Gears & Pinions EN19 Round Bar used for Gears, Pinions, and Sprockets in heavy machinery. Spindles EN19 Round Bar used for Machine Spindles and Lathe Spindles offering rigidity and precision. Piston Rods EN19 Round Bar used for Hydraulic Piston Rods and Rams due to toughness and machinability. Tool Holders EN19 Round Bar used for Tool Holders and Fixture Components in machining setups. Jigs & Fixtures EN19 Round Bar used for Jigs and Fixtures requiring high dimensional accuracy. Guide Rods EN19 Round Bar used for Precision Guide Rods and Linear Shafts. Collets & Chuck Bodies EN19 Round Bar used for Chuck Bodies, Collets, and Clamping Components. Hydraulic Shafts EN19 Round Bar used for Hydraulic Shafts & Components under high-pressure conditions. Logging Parts EN19 Round Bar used for Logging & Drilling Equipment due to its impact resistance. Conveyor Pins & Rolls EN19 Round Bar used for Conveyor Pins, Rolls, and Bearing Supports. Drill Collars & Tool Joints EN19 Round Bar used in Oilfield Tools such as Drill Collars and Tool Joints. Machine Components EN19 Round Bar used for Heavy Machine Components and Shafts. Gear Racks EN19 Round Bar used for Gear Racks and Power Transmission Systems. Forks & Levers EN19 Round Bar used for Forks, Levers, and Steering Components. Motor Shafts EN19 Round Bar used for Electric Motor Shafts requiring precise balancing. Tie Rods EN19 Round Bar used for Tie Rods in heavy-duty mechanical linkages. Camshafts EN19 Round Bar used for Camshafts with high surface hardness and strength. Reamer Bodies EN19 Round Bar used for Reamer Bodies and Boring Tools. Bearing Housings EN19 Round Bar used for Bearing Housings and Support Frames. Axles & Shafting EN19 Round Bar used for Axles and Power Transmission Shafting. Pump Shafts EN19 Round Bar used for Pump Shafts and Rotors under fluid pressure. Lathe Spindles EN19 Round Bar used for Lathe Spindles providing stability and smooth rotation. Die Holders EN19 Round Bar used for Die Holders and Press Tool Components. Brake Dies & Trim Dies EN19 Round Bar used for Brake Dies, Trim Dies, and Press Dies. Tooling Back-Up Plates EN19 Round Bar used for Back-Up Plates in Tooling Applications. Forming & Forging Dies EN19 Round Bar used for Forging Dies and Forming Tools requiring toughness. Hydraulic Press Parts EN19 Round Bar used for Hydraulic Press Columns, Rams, and Guides. Marine Shafts EN19 Round Bar used for Marine Propeller Shafts & Deck Equipment. Aerospace Tooling EN19 Round Bar used for Aerospace Fixtures and Assembly Tooling. Defence Components EN19 Round Bar used for Defence Hardware, Launch Tubes & Armament Parts. Power Plant Equipment EN19 Round Bar used for Turbine Shafts and Rotating Components in Power Plants. Oil & Gas Equipment EN19 Round Bar used for Oilfield Equipment, Wellhead Components & Drilling Tools. Construction Machinery EN19 Round Bar used for Excavator Pins, Loader Shafts & Heavy Construction Parts. Railway Components EN19 Round Bar used for Railway Axles, Brackets & Suspension Pins. Mining Equipment EN19 Round Bar used for Mining Shafts, Crusher Pins & Wear Parts. Windmill Shafts EN19 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)
1. What are EN19 / EN19 / 42CrMo4 Round Bars used for?
These alloy steel round bars are used in manufacturing high-stress components such as crankshafts, gears, axles, spindles, bolts, and machine shafts. They are widely used in the automotive, aerospace, defense, and heavy engineering industries due to their excellent strength and wear resistance.
2. Are EN19, EN19, and 42CrMo4 the same material?
Yes. EN19 (British standard), AISI EN19 (American standard), and 42CrMo4 (European standard) refer to the same alloy steel with slightly different naming conventions and specifications according to regional standards.
3. What is the hardness of EN19 / EN19 / 42CrMo4 bars after heat treatment?
After quenching and tempering, these bars can achieve a hardness of around 28 to 34 HRC, depending on the heat treatment process and section size. This makes them suitable for components requiring high wear and impact resistance.
4. What sizes and finishes are available for EN19 / EN19 / 42CrMo4 round bars?
They are available in a wide range of diameters from 16 mm up to 800 mm or more, and in various finishes such as hot rolled, forged, cold drawn, peeled, or ground, depending on the supplier and application requirement.
5. Can EN19 / EN19 / 42CrMo4 round bars be welded?
Yes, they can be welded, but special care must be taken due to the high hardenability of the alloy. Preheating and post-weld heat treatment are usually recommended to avoid cracking and ensure proper weld strength.
| Application / Component | Use of EN19 Round Bar |
|---|---|
| Holder Blocks | EN19 Round Bar used for Holder Blocks requiring high strength and dimensional stability. |
| Mold Bases | EN19 Round Bar used for Mold Bases offering toughness and wear resistance. |
| Axle Shafts | EN19 Round Bar used for manufacturing durable and impact-resistant Axle Shafts. |
| Bolts & Fasteners | EN19 Round Bar used for high-strength Bolts and Heavy-Duty Fasteners. |
| Crankshafts | EN19 Round Bar used for Crankshafts in engines due to superior fatigue strength. |
| Couplings | EN19 Round Bar used for Couplings where high tensile strength is required. |
| Gears & Pinions | EN19 Round Bar used for Gears, Pinions, and Sprockets in heavy machinery. |
| Spindles | EN19 Round Bar used for Machine Spindles and Lathe Spindles offering rigidity and precision. |
| Piston Rods | EN19 Round Bar used for Hydraulic Piston Rods and Rams due to toughness and machinability. |
| Tool Holders | EN19 Round Bar used for Tool Holders and Fixture Components in machining setups. |
| Jigs & Fixtures | EN19 Round Bar used for Jigs and Fixtures requiring high dimensional accuracy. |
| Guide Rods | EN19 Round Bar used for Precision Guide Rods and Linear Shafts. |
| Collets & Chuck Bodies | EN19 Round Bar used for Chuck Bodies, Collets, and Clamping Components. |
| Hydraulic Shafts | EN19 Round Bar used for Hydraulic Shafts & Components under high-pressure conditions. |
| Logging Parts | EN19 Round Bar used for Logging & Drilling Equipment due to its impact resistance. |
| Conveyor Pins & Rolls | EN19 Round Bar used for Conveyor Pins, Rolls, and Bearing Supports. |
| Drill Collars & Tool Joints | EN19 Round Bar used in Oilfield Tools such as Drill Collars and Tool Joints. |
| Machine Components | EN19 Round Bar used for Heavy Machine Components and Shafts. |
| Gear Racks | EN19 Round Bar used for Gear Racks and Power Transmission Systems. |
| Forks & Levers | EN19 Round Bar used for Forks, Levers, and Steering Components. |
| Motor Shafts | EN19 Round Bar used for Electric Motor Shafts requiring precise balancing. |
| Tie Rods | EN19 Round Bar used for Tie Rods in heavy-duty mechanical linkages. |
| Camshafts | EN19 Round Bar used for Camshafts with high surface hardness and strength. |
| Reamer Bodies | EN19 Round Bar used for Reamer Bodies and Boring Tools. |
| Bearing Housings | EN19 Round Bar used for Bearing Housings and Support Frames. |
| Axles & Shafting | EN19 Round Bar used for Axles and Power Transmission Shafting. |
| Pump Shafts | EN19 Round Bar used for Pump Shafts and Rotors under fluid pressure. |
| Lathe Spindles | EN19 Round Bar used for Lathe Spindles providing stability and smooth rotation. |
| Die Holders | EN19 Round Bar used for Die Holders and Press Tool Components. |
| Brake Dies & Trim Dies | EN19 Round Bar used for Brake Dies, Trim Dies, and Press Dies. |
| Tooling Back-Up Plates | EN19 Round Bar used for Back-Up Plates in Tooling Applications. |
| Forming & Forging Dies | EN19 Round Bar used for Forging Dies and Forming Tools requiring toughness. |
| Hydraulic Press Parts | EN19 Round Bar used for Hydraulic Press Columns, Rams, and Guides. |
| Marine Shafts | EN19 Round Bar used for Marine Propeller Shafts & Deck Equipment. |
| Aerospace Tooling | EN19 Round Bar used for Aerospace Fixtures and Assembly Tooling. |
| Defence Components | EN19 Round Bar used for Defence Hardware, Launch Tubes & Armament Parts. |
| Power Plant Equipment | EN19 Round Bar used for Turbine Shafts and Rotating Components in Power Plants. |
| Oil & Gas Equipment | EN19 Round Bar used for Oilfield Equipment, Wellhead Components & Drilling Tools. |
| Construction Machinery | EN19 Round Bar used for Excavator Pins, Loader Shafts & Heavy Construction Parts. |
| Railway Components | EN19 Round Bar used for Railway Axles, Brackets & Suspension Pins. |
| Mining Equipment | EN19 Round Bar used for Mining Shafts, Crusher Pins & Wear Parts. |
| Windmill Shafts | EN19 Round Bar used for Wind Turbine Shafts and Mechanical Hubs. |