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En Series Steel

Leading Manufacturer and Exporter of En Series Steel such as EN 1A En Series Steel, EN 3 B Series Steel, En Series Steel EN 8 and EN 24 Series Steel from Chennai.
En Series Steel



EN 1A En Series Steel

EN 1A En Series Steel

  • EN1A is a very popular grade of low carbon-manganese free cutting steel, which is most suitable for the manufacture of repetition turned components, such as nuts, bolts, hydraulic fittings and studs, particularly where intricate drilling and machining operations are involved. It can be case-hardened, producing components with enhanced wear resistance.
  • EN1A, also known as 230M07. EN1A is low carbon mild steel. Properties: free cutting, suitable for machining using both automatic and CNC machines. Available in square, round, flat or hexagon form. Equivalent to AISI 1113.
Chemical composition
ElementMinMax
Carbon, C0.070.15%
Manganese, Mn0.801.20%
Silicon, Si-.--0.10%
Sulfur, S0.20.3
Phosphorous, P-.--0.07
Mechanical Properties
Max Stress370-480 n/mm2 Mindependent on ruling section
Yield Stress240-400 n/mm2 Mindependent on ruling section
0.2% Proof Stress225-360 n/mm2 Mindependent on ruling section
Elongation6-10% Mindependent on ruling section
EN1A Equivalents
BS970: 1955EN1A
BS970/PD970: 1970 onwards230M07
European9SMn28, BS En 11SMn30
Worst-off No.1.0715
US SAE (AISI)1213, 1215
Heat Treatment
  • Carbonisation of EN1A bright mild steel takes place at 900-950°C (1652°F- 1742°F) then it is furnace or air cooled.
  • En1A can be tempered at 180-210 °C (356 °F- 410°F) then should be left to cool in air.
  • The mild steel can be hardened at 780-800°C (1436°F- 1472°F) then quenched in oil or water. However this is difficult to do with EN1A and is not recommended.




EN 3 B Series Steel

  • EN3B, also known as 070m20, available in rounds, flats, squares & hexagons. En3b is a mild steel suitable for welding and general machining. AISI 1020
  • The term mild steel applies to all low carbon steel that does not contain any alloying elements in its makeup and has a carbon content that does not exceed 0.25%. The term “mild” is used to cover a wide range of specifications and forms for a variety of steel.
  • Mild steel is used in mechanical engineering applications for parts that will not be subject to high stress.
  • When in its bright cold drawn condition the steel is able to endure higher levels of stress, particularly on smaller diameters.
  • Compared to normal mild steel, bright mild steel provides tighter sectional tolerances, increased straightness, and a much cleaner surface. The main advantage of cold drawn steel is that steel can be bought closer to the finished machine size, providing reduce machining costs. Another benefit of bright steel bars is a marked increase in physical strength over hot rolled bars of the same section.
  • EN3B bright mild steel (070m20) used to be the most popular specification of bright mild steel available. It has since been replaced by steels that have a tighter chemical analysis.
  • EN3b Bright mild steel is now a general purpose steel that is suitable for welding, can be case-hardened and is good for general machining. EN3b is generally used in engineering applications that will not be heavily stressed.
Chemical Composition
PropertiesMetricImperial
Hardness, Brinell (typical)30033
Hardness, Rockwell C (typical)3030
Tensile strength, ultimate965-1030 MPa140000-150000 psi
Tensile strength, yield
827-862 MPa120000-125000 psi

Elongation at break (in 50 mm (2"))20.0%20.0%
Compressive strength862 MPa125000 psi
Charpy impact (V-Notch)27.1-33.9 J20.0-25.0 ft-lb
Poisson's ratio0.27-0.300.27-0.30
Elastic modulus190-210 GPa27557-30457 ksi
Mechanical Properties
ConditionTensile StrengthYield StrengthElongation %
MPa Min.MPa Min.
Cold drawn56044010
Turned & Polished43021521
International Comparisons
British BS 970:1991070M20
Swedish SS1370
German DINCK20
American SAE1021
French AFNORXC18
European StandardEN10083-1
European Steel No.1.1151
European Steel NameC22E



EN 3 B  Series Steel



En Series Steel EN 8

En Series Steel EN 8

  • EN8 also know as 080M40. Unalloyed medium carbon steel. EN8 is a medium strength steel, good tensile strength. Suitable for shafts, stressed pins, studs, keys etc. AISI 1040.
    Available as normalized or rolled. EN8 is supplied as round drawn/turned, round hot rolled, hexagon, square, flats and  plate.
  • EN8 is usually supplied untreated but can be supplied to order in the normalized or finally heat treated (quenched and tempered to ”Q” or “R”properties for limiting ruling sections up to 63mm), which is adequate for a wide range of applications.  Please refer to our selection guide for comparisons.
  • EN8 is a very popular grade of through-hardening medium carbon steel, which is readily machinable in any condition. (Refer to our machinability guide). EN8 is suitable for the manufacture of parts such as general-purpose axles and shafts, gears, bolts and studs.  It can be further surface-hardened typically to 50-55 HRC by induction processes, producing components with enhanced wear resistance.  For such applications the use of EN8D (080A42) is advisable.  It is also available in a free-machining version, EN8M (212A42)
  • EN8 in its heat treated forms possesses good homogenous metallurgical structures, giving consistent machining properties.
  • Good heat treatment results on sections larger than 63mm may still be achievable, but it should be noted that a fall-off in mechanical properties would be apparent approaching the centre of the bar.
  • It is therefore recommended that larger sizes of EN8 are supplied in the untreated condition, and that any heat treatment is carried out after initial stock removal.  This should achieve better mechanical properties towards the core.
Chemical composition
ElementMinMax
Carbon, C0.350.45%
Manganese, Mn0.601.0%
Silicon, Si0.50.35%
Sulphur-.--0.6
Phosphorus-.--0.6
Mechanical Properties
Max Stress700-850 n/mm 2 
Yield Stress465 n/mm 2  Min(up to 19mm LRS)
0.2% Proof Stress450 n/mm 2  Min(up to 19mm LRS)
Elongation16% Min(12% if cold drawn)
Impact KCV28 Joules Min(up to 19mm LRS
Hardness201-255 Brinell
EN8 Equivalents
BS970: 1955EN8
BS970/PD970:080M40
1970 onwards
EuropeanC40, C45, Ck40,Ck45, Cm40, Cm45
Werkstoff No.1.0511, 1.1186, 1.1189
US SAE (AISI)1039, 1040, 1042, 1043, 1045


Heat Treatment
  • EN8 or 080m40 can be tempered at a heat of between 550°C to 660°C (1022°F-1220°F), heating for about 1 hour for every inch of thickness, then cool in oil or water.
  • Normalizing of EN8 bright mild steel takes place at 830-860°C (1526°F-1580°F) then it is cooled in air.
  • Quenching in oil or water after heating to this temperature will harden the steel.
  • Chemical Composition of EN8 Steel
Analysis
Carbon0.35-0.45%
Manganese0.60-1.00%
Silicon0.05-0.35%
Phosphorous0.06% max
Sulphur0.06% max

 





EN 24 Series Steel

  • BS970: 1955 EN24, BS970/PD970: 1970 onwards 817M40. Related European grades: 34CrNiMo6, Werkstoff No. 1.6582 US Grade: SAE (AISI) 4340.
  • EN24 is usually supplied in the finally heat treated condition (quenched and tempered to “T” properties) up to a limiting ruling section of 250mm, which is superior to grades 605M36, 708M40 or 709M40 – see properties below. Please refer to our selection guide for comparisons.
  • EN24 is a very popular grade of through-hardening alloy steel, which is readily machinable in the “T” condition. (Refer to our machinability guide). EN24T is most suitable for the manufacture of parts such as heavy-duty axles and shafts, gears, bolts and studs. EN24T can be further surface-hardened typically to 58-60 HRC by induction or nitride processes, producing components with enhanced wear resistance.
  • In addition to the above, EN24T is capable of retaining good impact values at low temperatures, hence it is frequently specified for harsh offshore applications such as hydraulic bolt tensioners and shipborne mechanical handling equipment.
  • EN24 sections larger than 250mm may still be available in the quenched and tempered condition, but it should be noted that a fall-off in mechanical properties may be apparent approaching the centre of the bar.
  • It is therefore recommended that larger sizes are supplied in the annealed (softened) condition, and that quenching and tempering is carried out after initial stock removal. This should achieve better mechanical properties towards the core.
Chemical composition
GradeMinMax
Carbon, C0.350.45%
Manganese, Mn0.450.70%
Silicon, Si0.100.35%
Nickel, Ni1.31.8
Molybdenum, Mo0.200.35
Chromium,Cr0.901.40%
Sulfur, S-.--0.05%
Phosphorous, P-.--0.05%
Carbon(C)Directly influences the hardness and strength of the steel, decreases toughness.
Chromium(Cr)Improves Hardenability, high temperature strength, wear resistance and even corrosion resistance(Cr>14%).
Cobalt(Co)Improves retention of hardness at high temperatures.
Molybdenum(Mo)Increases yield point and strength. Improves Hardenability and wear resistance. Manganese Lowers effects of Iron sulphides, increases hardenability, wear resistance.
Nickel(Ni)Increases toughness at lower temperatures, slows the corrosion process. Improves toughness, grain structure, high temperature strength, wear resistance, etc.
Vanadium(V)Increases wear resistance, high temperature strength, retention of hardness etc.
Silicon(Si)It is a deoxidizing agent. Increases strength and wear resistance. It is of importance that certain elements are as low as possible. Elements like Hydrogen, Oxygen, Nitrogen, Phosphorous, Sulphur create defects inside & also reduce the mechanical properties of steels.
EN24 Equivalents
BS970: 1955EN24
BS970/PD970:817M40
1970 onwards
European34CrNiMo6
Werkstoff No.1.6582
US SAE (AISI)4340


EN 24 Series Steel



 



Saaj Steel Corporation
Mohamed Javith (Managing Partner)
No. 102, Mugapair Road, Mannurpet
Chennai - 600050, Tamil Nadu, India


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