Steel grade EN19

EN19 (709M40T) Engineering steel

EN19 is a high quality alloy steel with tensile strength ideal for load bearing.

With a combination of good ductility and shock resistance, EN19 is suitable for applications with very high loading such as engine gear boxes. Popular in the automotive sector it is possible to machine the material extremely accurately, in recent years EN19 has become an established material in the Oil & Gas sector. The material lends itself well to any application where strength is a primary consideration.

EN19 (709M40T) Engineering Steel is a high tensile steel with good ductility and shock resistance. The alloy offers good wear resistance too and can be case hardened. It is a high quality alloy engineering steel.

Steel stock range

High Peak Steels stock EN19 in black steel round bar and bright steel round bar.

Associated standards

UK Standard EN19 | European Grades 42CrMo4 | Werkstoff 1.7225 | SAE/AISI 4140

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EN19 (709M40T) black steel

ProductMin sizeMax size
codes-round225mm dia600mm dia
codes-flat2
codes-square2
codes-hex2

EN19 (709M40T) bright mild steel

ProductMetric sizes
Min

Max
Imperial sizes
Min

Max
codes-round210mm dia75mm dia1/2" dia3" dia
codes-flat2
codes-square2
codes-hex2

EN19 (709M40T) Chemical Composition

 CSiMnSPCrNiMo
Min0.360.10.70.90.25
Max0.440.3510.040.0351.20.40.35

EN19 (709M40T) Mechanicals

 Yield
N/mm2
0.2% proof
N/mm2
UTS (Rm)
N/mm2
Elong (A)
%
Red of Area (Z)
%
Hardness
HB
Impact Test (KV)
J
Quenched & Tempered to condition R (min)
4957001520128
Quenched & Tempered to condition R (max)
850255
Quenched & Tempered to condition S (min)
5857751522350
Quenched & Tempered to condition S (max)
925277
Quenched & Tempered to condition T (min)6808501324850
Quenched & Tempered to condition T (max)1000302
Quenched & Tempered to condition U (min)7559251226942
Quenched & Tempered to condition U (max)1075331
Drawn Quenched & Tempered to condition T
(min)
700850924850
Drawn Quenched & Tempered to condition T
(max)
1000302

Typical Applications of EN19 steel

  • AUTOMOTIVE GEARS AND PARTS
  • SHAFTS
  • TOWING PINS
  • LOAD BEARING TIE RODS
  • OIL & GAS INDUSTRY APPLICATIONS