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EN19 Equivalent grades:

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

 

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, DIN-1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTM SA-105 , SAE1018, SAE1010, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.

 

EN19 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

EN19 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

EN19 Hardness:

Properties
Metric
Imperial
Hardness, Brinell
197
197

EN19 Heat Treatment Properties:

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.

EN19 Hardening:

En19 alloy steel can be hardened by cold working or heating and quenching.

EN19 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, a tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and tensile strength of 130 ksi can be achieved by tempering at 538°C(1000°F).

EN19 Physical Properties:

DENSITY (G/CM 3)
8.08
DENSITY (LB/IN 3)
0.292
MELTING POINT (°C)
1425
MELTING POINT (°F)
2600

EN19 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

EN19 Forging Properties:

En19 steel is forged at 926 to 1205°C.

EN19 Stress Relieving:

Annealed: 600-650°c Heat in needed.
Hardened: 500-550°c Heat in needed.

EN19 Normalizing:

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

EN19 Annealing:

EN19 steel is annealed at 872°C followed by slowly cooling in the furnace.

EN19 Density:

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

EN19 Machinability:

EN19 alloy steel has good machinability in the annealed condition.

EN19 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.