Tri Round Bars

EN19 ALLOY STEEL BRIGHT BAR

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DETAILED INFORMATION

Bright bars made from EN19 alloy steel are highly versatile and widely used in many industrial applications. A high-quality steel alloy, it exhibits excellent strength, toughness, and wear resistance. Bright bar made from EN19 has excellent mechanical properties, making it suitable for applications requiring high tensile strength and fatigue resistance.

EN19 alloy steel bright bars include iron, carbon, manganese, chromium, molybdenum, and vanadium. Carbon content ranges from 0.35% to 0.45%, contributing to strength and hardness. Manganese enhances hardenability, while chromium improves corrosion resistance. Vanadium and molybdenum enhance toughness, wear resistance, and temperature resistance.

The high tensile strength of EN19 alloy steel bright bar is one of its essential characteristics. With a minimum tensile strength of 700 MPa, it is suitable for heavy loads and stresses applications. EN19 bright bar can withstand challenging conditions and maintain its structural integrity due to its exceptional strength.

EN19 alloy steel bright bar is also known for its excellent toughness. It is suitable for applications that absorb sudden shocks and vibrations due to its good impact resistance. This property is essential, especially in indessentialuch as automotive, aerospace, and heavy machinery, where components are subjected to dynamic loads.

Despite harsh operating conditions, EN19 bright bar exhibits good wear resistance, allowing it to withstand abrasion and maintain its surface integrity. This makes it ideal for gears, shafts, and other components subject to sliding or rotating motion.

Moreover, EN19 alloy steel bright bar can be effectively heat-treated to achieve desired properties because of its good hardenability. It can be quenched and tempered for optimal hardness, strength, and toughness.

Bright bar refers to the finish of the steel, indicating that it has been precision ground to achieve a smooth, shining surface. This finish enhances aesthetics and improves dimensional accuracy in applications requiring a superior surface finish.

Various industries use EN19 alloy steel bright bars. In the automotive sector, high-strength components such as crankshafts, connecting rods, gears, and axles are commonly manufactured from it. Heavy-duty machinery components, such as shafts, spindles, and couplings, are also produced using it. Moreover, EN19 bright bar is used to construct oil and gas industry equipment, such as drill rods and collars.

EN19 alloy steel bright bar is a highly versatile material with exceptional mechanical properties. Due to its high tensile strength, toughness, wear resistance, and good hardenability, it is suitable for a wide range of demanding applications. EN19 bright bar is a reliable choice for manufacturing components that require high strength, durability, and performance in the automotive, aerospace, and heavy machinery industries.

Grade Introduction:

Generally supplied hardened and tempered in the tensile range of 850 – 1000 Mpa (condition T), EN 19 Bright Round Bar is a 1% chrome-molybdenum medium hardenability general purpose steel. Ultrasound and MPI inspections are performed on all 4140 Alloy Steel Bars we supply. The EN19 bright bar is a high-strength alloy—medium carbon steel of high quality. The EN19 black bar is one of the steel grades in the BS 970-1955 standard, which specifies wrought steels for use in mechanical and allied engineering. Good flexibility and shock resistance make the EN19 bar and EN19 flat bar suitable for applications with high loads, such as engine gearboxes. It is possible to machine EN19 square bar exceptionally accurately, which is why it is a popular material in the automotive sector. Oil & Gas industries also demand EN19 hollow bars. Due to its high strength, the EN19 steel bar is a great choice. EN19 rods are equivalent to AISI 4140 rods and DIN 1.7225/42crmo4 bars.

A bright round bar made of EN19 steel contains chromium and molybdenum. The EN19 welding rod belongs to the low alloy steel class. Round bars from EN19 have high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. There are several ways in which EN19 black bars can be heat treated to give them a combination of properties. The hardness of oil-quenched and tempered steel is 28-34 HRC.  The annealing delivery hardness of EN19 bright bars is less than 250HB. The tensile strength of EN19 round bars is 850-1000 MPa. 

In addition to other grades:

MS, EN1A, EN3B, EN8, EN8D, EN9, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, 2714, SKD-11, P20, P20+S, P20+Ni, SCM 420, ASTM SA-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE 52100, S40C, S355J2G3.

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Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Specification Chart Of En19 Alloy Steel

Grade en19
Specification BS 970 1955 EN
Round bar size Diameter: 3-~800mm
Hex Bar size 2-100mm A/F
Flat bar size Thickness: 2 -100mm
Width: 10 to 500mm
Square bar size 4 to 100mm
Angle bar size 3mm*20mm*20mm~12mm*100mm*100mm
Section 3.0 to 12.0mm thickness
Channel Bar 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Hollow Bar 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Billet Size 1/2″ to 495mm Diameter
Rectangles Size 33 x 30mm to 295 x 1066mm
Finish Cold (bright) drawn, centreless ground, smooth turned, peeled, slit rolled edge, hot rolled, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Surface Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Condition Hardened & tempered, annealed
Technique en19 Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Processing Bar cutting to 650mm
Form en19 Welding Rod, Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging, etc.
Our en19 round bar conforms to NACE MR0175/ISO 15156

Chemical Composition:

The following table shows the chemical composition of EN19 steel:

Element

 

C

 

Si

 

Mn

 

P

 

S

 

Cr

 

Mo

 

Fe

 

Content (%) 

 

0.35-0.45

 

0.15-0.30

 

0.50 – 0.80

 

0.035

 

0.040

 

0.90-1.50

 

0.20-0.40

 

96.78-97.77

 

 

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 machinabilities)

 

65

 

65

 

Hardness: 

Properties

 

Metric

 

Imperial

 

Hardness, Brinell

 

197

 

197

 

Heat treatment: 

Steel is heated at 845°C, followed by quenching in oil. Before hardening, it can be normalized by heating at 913°C for an extended period, followed by air cooling. 

Hardening:

The oil satisfies from a temperature of 85°C/88°C Celsius.

Tempering:

En19 alloy steel can be tempered at 205 to 649°C depending upon the desired hardness level. The hardness of the steel can be increased if it has a lower tempering temperature. For example, tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and a tensile strength of 130 ksi can be achieved by tempering at 538°C(1000°F).

Physical Properties:

DENSITY (G/CM 3)

 

8.08

 

DENSITY (LB/IN 3)

 

0.292

 

MELTING POINT (°C)

 

1425

 

MELTING POINT (°F)

 

2600

 

Thermal Properties: 

Average Coefficient of Linear Thermal Expansion (μm/m.K)

 

Temp. Range °C

 

20-100

 

20-200

 

20-400

 

20-600

 

Coefficient

 

12.2

 

12.6

 

13.7

 

14.6

 

Electrical Resistivity (  μΩ.m) and Thermal Conductivity (W/m.K)

 

Temp. Range °C

 

100

 

200

 

400

 

600

 

Electrical Resistivity

 

0.263

 

0.326

 

0.4575

 

0.646

 

Thermal Conductivity

 

42.6

 

42.2

 

37.7

 

33.0

 

Forging Properties:

Forge within the temperature range of 125°C/90°C Celsius.

Stress Reliving: 

Annealed: 600-650°c Heat is needed.

Hardened: 500-550°c Heat is required.

Normalizing: 

Heat 870°C – 900°C and cool in still air.

Annealing: 

Anneal at a temperature of 85°C Celsius and cool steadily.

Density: 

The density of EN19 Alloy steel material: is 7.85kg/cm3

Machinability: 

EN19 alloy steel has good machinability in the annealed condition.

Welding: 

EN19 steel can be welded using all conventional techniques. However, the mechanical properties of this steel will be affected if it is welded in the heat-treated condition, and post-weld heat treatment should be performed.

 

Equivalent grades:

Internal Standard

 

BS

 

Din

 

IS

 

EN

 

Sae/Aisi

 

EN19

 

709M40

 

42CrMo2

 

40Cr4Mo3

 

En19

 

4140

 

 

Surface Finish Of En19 Rod

CD

Cold drawn

P

Polished

BD

Bright drawn

SRE

Slit rolled edge

CG

Centreless ground

HF

Hot finished

CF

Cold finished

HRAP

Hot rolled, annealed, and pickled

P&T

Peeled and turned

RT

Rough turned/peeled

ST

Smooth turned

PR

Peeled and reeled

 

 

EN19 ALLOY STEEL BRIGHT BAR Application:

  • Utilized when higher than carbon steel mechanical properties are required
  • Commonly used for axles, drive shafts, crankshaft connecting rods, high tensile bolts, studs, propeller shaft joints, rifle barrels, and induction-hardened pins
  • Bolt specification: 9.8 (in condition “T”)
  • Bolt specification: 10.9 (in condition “U”)
  • Gears
  • Pinions
  • Shafts
  • Spindles
  • Oil & Gas Industries

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