EN19 Round Bars
EN19 Round Bars also known as 709M40, SAE 4140 & 42CrMo4. EN19 is a high quality alloy steel with tensile strength & 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 Steel is a high quality engineering alloy steel containing chromium and molybdenum. It falls in a class of low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. It can be heat treated in a number of ways to give it a combination of properties.
We New Arise Metal are Stockist & Supplier of EN19 Round Bars to a number of companies in Mumbai, Pune (eg Chakan, Bhosari, Ranjangaon, etc), Aurangabad, Ahmednagar, Rajkot, Thane, Nagpur, etc.
EN19 also known as 708M40 / 709M40 and AISI 4140 comes treated in the annealed as rolled or can be supplied in the T condition. We offer EN19 ia a high quallity alloy steel with good tensile strength. We can supply in diameters, squares, and flats from stock. Cut to length if required.
It is renown for its wear resistance properties and where high strength properties is required. Suitable for automotive applications such as gears, shafts, spindles, etc. If strength is a primary requirement for you application then EN19 should be considered.
When you need a High Quality steel with the hardness you depend on for a variety of projects, EN19 / SAE4140 / 42CrMo4 is the one you want. EN19 is a high-tensile alloy type of steel that you usually receive in a readily machinable “T” condition. It provides shock-resisting properties and is wear-resistant as well, and it always provides very good ductility. You can also harden it by heating it uniformly to 1500/1545° Fahrenheit until it is heated all the way through, then quenching it in oil.
EN19 Steel in the following forms :
- Rounds (As rolled) - 23.5mm to 80mm
- Hexagons (As rolled) - 23.5mm to 52.5mm
- Round Cornered Square (RCS) - 55mm to 75mm
- Bright Bars (Rounds) - 22mm to 63.5mm
For more Sizes Please contact us, We also Dia from 75 mm to 1300 mm in Ready Stock
EN19 Chemical Composition :
| Element | Content (%) |
| Iron, Fe | 96.785 – 97.77 |
| Chromium, Cr | 0.90 – 1.50 |
| Manganese, Mn | 0.50 – 0.80 |
| Carbon, C | 0.35 – 0.45 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.20 – 0.40 |
| Sulfur, S | 0.040 |
Phosphorous, P | 0.035 |
Key Features:
EN19 Engineering Steel is 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.
Typical Applications of EN19 Round Bars & Rods:
EN19 was originally introduced for the use in the machine tool and motor industries for gears, pinions, shafts, spindles and the like. Later its applications became much more extended and it is now widely used in areas such as the oil and gas industries. EN19T is suitable for applications such as gears, bolts, studs and a wide variety of applications where a good quality high tensile steel grade is suited
- Automotive gears and parts
- Shafts
- Towing pins
- Load bearing tie rods
- Oil & Gas industry applications
Related material specifications:
| BRITISH BS 970:1991 | 709M40 / 709M40T |
| BRITISH BS 970:1955 | EN19 / EN19T |
| GERMAN DIN | 42CrMo4 / 42CrMo2 |
| FRENCH AFNOR | 42CD4 |
| SWEDISH SS | 2244 |
| AMERICAN SAE | 4140 |
| EUROPEAN STEEL NO. | 1.7225 |
| EUROPEAN STEEL NAME | 42CrMo4 |
| EUROPEAN STANDARD | EN10277-5 |
| INDIAN STANDARD IS | 40Cr4Mo3 |
Forging :
Pre heat carefully, then raise temperature to 850-1200°C for forging. Do not forge below 850°C. After forging cool slowly in still air.
Annealing :
Heat the EN19 slowly to 680-700°C. Cool in air.
Hardening :
This steel grade is commonly supplied ready heat treated. If further heat treatment is required annealed EN19 should be heated slowly to 860-890°C and after adequate soaking at this temperature quench in oil. Temper as soon as tools reach room temperature.
Tempering :
Heat carefully to a suitable temperature selected by reference to a tempering chart or table. Soak at the temperature for 2 hours per 25mm of ruling section and then allow cooling in air. Tempering between 250-375°C is not advised as tempering within this range will reduce the impact value.
Heat Treatment :
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of EN19T alloy steel.
We “NEW ARISE METAL” offer EN19 (709M40) / SAE 4140 / 42CrMo4 Engineering Steel in Round Bars, Hollow Bar, Plate, Hexagon and Flat bar.
EN19, EN19T steel stockholders and suppliers, delivering to the whole of the India. You can Email us at