Details About En19 Bright Bar

En19 bright bar

EN19 bright steel round bar is also identified as AMERICAN SAE 4140 bright bar. EN 19 Bright Round Bar is a 1% chromium-molybdenum moderate hardenability multi-purpose, high tensile steel typically supplied solidified and cooled down in the 850 – 1000 Mpa tensile range (condition T). All 4140 Alloy Steel bars we supply have been thoroughly checked with ultrasound and MPI. EN19 bright bar is a tensile strength alloy steel of high quality. It is a premium medium carbon. EN19 black bar is a steel grade in the BS 970-1955 standard for wrought steels for mechanical and linked engineering purposes. 

EN19 bar and en 19 flat bar are ideal for applications with high loadings, such as engine gearboxes, due to their excellent flexibility and shock resistance. EN19 square bar is commonly used in the automotive industry because it can be precisely machined. The oil and gas industry is also interested in EN19 hollow bar material. Due to its high strength, the EN19 steel bar is an excellent choice. AISI 4140 Rod and DIN 1.7225/42crmo4 Bar are the EN19 rod’s equivalent grades.

EN19 steel bright round bar is a chromium and molybdenum-containing engineering alloy steel. EN19 welding rod is classified as low alloy steel. EN19 round bars are extremely fatigue-resistant, abrasion-resistant, impact-resistant, challenging, and torsionally strong.

EN19 black bars can be heat resistant in a variety of ways to achieve a variety of properties. The hardness of oil-quenched and tempered steel is 28-34 HRc. The delivery hardness of EN19 bright bar Heat treatment is less than 250HB. The tensile strength of the En19 round bar is 850-1000 Mpa.

Dhand Steels is a very well supplier and manufacturer of EN19 Bright Bar. Furthermore, to produce premium quality products, our company must create employees trying to cut methods and elevate raw materials under the supervision of highly skilled individuals. These items are available to our clients at the most competitive prices. We have an excellent source for EN19 Steel Bright Bar stockists and manufacturers. We offer our customers high-quality EN19 Bright Bar manufactured following industry standards.

Supply cities/states

Dhand Steels, a leading bar manufacturer in  Navi Mumbai, Nashik, Thane, Maharashtra, Aurangabad, Nagpur, Mumbai, and Pune, is known for its dimensional accuracy, high quality, and sturdy construction.

Our Export Market: Germany, Spain, Italy, the United Kingdom, France, the Netherlands, Denmark, Belgium, Poland, Finland, the Czech Republic, Brazil, and the United States.

  • 100% flaw-free bright bars
  •  Money-back guarantee
  •  Premium quality 
  • testing Surface finishing 
  • On-time delivery

Chemical Composition of EN19 bright bars

PhosphorusMax 0.40
SulphurMax 0.40

Mechanical Properties:

Hardness, Brinell197197
Yield strength414 MPa60250 psi
Bulk modulus (typical for steel)140 GPa20300 ksi
The shear modulus (especially for steel)80 GPa11600 ksi
Elastic modulus190-210 GPa27556-30457 ksi
Poisson’s ratio0.26-0.300.27-0.30
The shear modulus (particularly for steel)25.70%25.70%
Tensile strength654 MPa95000 psi
Hardness, Knoop (converted from Brinell hardness)220219
Rockwell B hardness (Brinnell hardness converted)9292
Hardness, Rockwell C (Brinnell hardness transformed.) Values below the normal HRC range are only for comparison purposes.)1313
Vickers, toughness (changed from Brinell hardness)207207
Machinability (based on AISI 1212 as 100 machinabilities)6565

Physical Properties:

(G/CM 3) DENSITY8.09
(LB/IN 3) DENSITY0.293

EN19 round bars Specifications:

  1. When machining shafts or long spindles, this material distorts, especially when hardened and tempered.
  2. In practice, the work parts should be harshly machined to plus acceptance and left in the open on the floor for 36 hours, following which the substance would have “aged,” and stress reassured itself and thus trying to minimize deformation on the completion of the good or service
  3. Machinability is good, but allow 6% on the outside diameter for active surface removal.
  4. This material can be welded, but only with the proper methods and materials as recommended by welding experts. Ideal for 60-tonne tensile uses up to 100mm max.
  5. Sizes greater than the restricted ruling section will be heat resistant only to hardness, with no guarantee of mechanical properties.

Round bar EN19 Applications:

  • When mechanical properties greater than those of carbon steel are required.
  • Axles, start-driving crankshaft, crankshaft joints, high tensile bolts, studs, shaft joints, rifle casings, and induction hard core pins are all common applications.
  • 9.8 (in condition “T”) bolt specification
  • Bolt size: 10.9 (in condition “U”).
  • Gears
  • Pinions
  • Shafts
  • Spindles
  • Industries of Oil and Gas

Heat treatment

 It can be normalized before hardening by heating at 913°C for an extended period of time and then air cooling.


Oil satiates from a temperature of 85°C/88°C Celsius for hardening.


En19 alloy steel can be mitigated at temperatures ranging from 205 to 649°C, following the desired toughness level. The hardness of the steel can be increased by tempering it at a lower temperature. Tensile strength of 225 ksi, for example, can be obtained by tempering at 316°C (600°F), and tensile strength of 130 ksi can be obtained by tempering at 538°C (1000°F).

Forging Qualities

Forge at temperatures between 125°C and 90°C Celsius.

Reliving Stress

600-650°C annealed Heat is required.

500-550°C hardened heat required


 By heating to 870°C – 900°C and cooling in still air.


Anneal at 85°C Celsius and continue to cool steadily.


EN19 Alloy steel material density: 7.85kg/cm3.


When annealed, EN19 alloy steel has good machinability.

Welding: EN19 steel can be welded using any standard technique. However, if welded in the heat-treated condition, the mechanical characteristics of this steel will be affected, and post-weld heat treatment should be performed.


These EN19 Carbon steel bars can be fashioned by heating up the alloy to temperatures ranging from 850 degrees Celsius to 1200 degrees Celsius and then cooling it with air. The achievement and characteristics of the EN19 hexagon bar are also affected by the allow effective, quenching medium, and furnace type. We’ve been making these bars for the last several years, and our customers trust us because of the high quality and low prices we offer. We sell these items all over the world. Because of our customers’ trust and prompt delivery, we have become one of the nation’s most excellent and reliable. EN19 semicircular bar manufacturers.

Also check – En8 Bright Bars- Compositions and Specifications

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