EN19 Steel

EN19 material properties are high hardness and high tensile strength. EN19 comes under Alloy steel under the grades of steel. EN19 alloy steel is used to make machine parts like gears, nuts, bolts, structural materials, angles, channels, round bars, hex bars, etc. EN19 has an extreme tensile strength in EN19T condition.

Ready stock material of EN19 in sizes 20mm to 190mm dia. Over two decades of experience supplying EN19 round bars. We are one of the most trusted manufacturers and exporters of  EN19 grade Alloy Steel Bars. The heat treatment methods such as normalizing, tempering, and quenching can be applied to EN19. The EN19 material is tested for a variety of parameters such as impact testing, mechanical testing, chemical analysis testing, bent testing, etc. Heat Treated EN19 sheets and plates are of very tensile strength and are used to make steel products. We Supply EN19 sheets and plates, round bars , forged bars, hot rolled bars, cold forged bars, bright bars, flat bars, square bars, hex bars, and forged blocks.

Internal Standard
BS
Din
IS
EN
Sae/Aisi
EN19
709M40
42CrMo2
40Cr4Mo3
En19
4140

Available Types & Range

Form of Supply Size(mm) Length(mm)
Round bar Φ 16 -Φ 200 Standard or As your request
Forged Rounds Φ 140  – Φ 650 Standard or As your request
Forged Flats Thickness : 65 – 450
Width: 130 – 650		 Standard or As your request

EN – 19 ROLLED ROUNDS

6 mm to 200 mm Dia

Brand – JSW, VSP, ASP, SAIL, SLR

EN 19 – FORGED ROUND

Size – 140 mm to 670 mm Dia

Brand – Kolkatta& Punjab Main Make

Chemical Composition & Technical Specification EN 19

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

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 machinability)
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 a long period of time followed by air cooling.
Hardening:
Oil quench 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 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 in needed.
Hardened: 500-550°c Heat in needed.
 
Normalizing: 
Heat 870°C – 900°C and cool in still air.
Annealing: 
Anneal at a temperature of 85°C Celsius and cool steadily.
Density: 
Density of EN19 Alloy steel material: 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.