EN19
Alloy Steel Round Bar is a high quality alloy steel with tensile strength. 709M40 (EN19) Low Alloy 1%
Chromium-Molybdenum Through-Hardening Steel. 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.
Material description:
A through-hardening steel capable of surface hardening by nit riding. Material can be supplied
untreated, annealed or Q & T. Bars commonly supplied in the heat treated condition. A low alloy steel
that possesses good tensile and shock resistance properties. Wear resistance can be increased by flame
hardening and is suitable for nit riding. Applications axles, shafts, gears and induction harden pins
Key Features:
EN19 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.
Typical Applications:
Automotive gears and parts
Shafts
Towing pins
Load bearing tie rods
Oil & Gas industry applications.
EN24
Engineering Steel
EN24 is a very high strength steel alloy which is supplied hardened and tempered.
The grade is a nickel chromium molybdenum combination – this offers high tensile steel strength, with
good ductility and wear resistance characteristics. With relatively good impact properties at low
temperatures, EN24 is also suitable for a variety of elevated temperature applications.
Key Features:
EN24 Engineering Steel is easy to treat and temper and is supplied hardened and tempered. The alloy
offers a good combination of strength, ductility and wear resistance. It is a very high strength alloy
engineering steel.
Typical Applications:
High strength shafts
Punches & dies
Drill bushings
Retaining rings
Gears.
EN31
EN31 is a very high strength steel alloy which is hardened and tempered before supplying and has nickel,
chromium, molybdenum making it high tensile steel strength, with good ductility and wear resistance.
With relatively good impact properties at low temperatures, EN31 is also suitable for a variety of
elevated temperature applications. EN31 round bars have good internal strength and high external
strength, which makes it highly wear resistant. EN31 steel round bars offer good combination of
ductility, strength and wear resistance. EN31 is a very high strength alloy engineering steel.
Equivalent grades of EN31 round bars
BRITISH BS 970:1991 535A99
BRITISH BS 970:1955 EN31
GERMAN DIN 100CR6
FRENCH AFNOR 100C6
SWEDISH SS 2258
AMERICAN SAE 52100.
EN353
EN353 is a very high strength steel alloy which is hardened and tempered before supplying and has
nickel, chromium, molybdenum making it high tensile steel strength, with good ductility and wear
resistance. With relatively good impact properties at low temperatures, EN353 is also suitable for a
variety of elevated temperature applications. EN353 round bars have good internal strength and high
external strength, which makes it highly wear resistant.
EN353 steel round bars offer good combination of ductility, strength and wear resistance. EN353 is a
very high strength alloy engineering steel. EN 353 steel has carbon content material of 0.17 % &
probably the most usual form of steel, because the carbon content material raises, the material
becomes tougher & harder. This grade is in general used for a lot of automobiles functions comparable
to heavy duty tools, shaft, pinion, cam shafts and gudgeon pins.
Equivalent grades of EN353 round bars
BRITISH BS 970:1991 815M17
BRITISH BS 970:1955 EN353
GERMAN DIN 20NiCrMo5
FRENCH AFNOR 20NCD5
SWEDISH SS 2523
EUROPEAN STEEL NAME 17NiCrMoS6-4
EUROPEAN STANDARD EN10277-4.
Application
Acceptable for many automobile applications such as heavy duty gear, shaft, pinion, camshafts, and
gudgeon pins. / machining components.
SAE 4140
AISI 4140 steel is an 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.
Mach-inability
AISI 4140 alloy steel has good mach inability in the annealed condition.
Forming
AISI 4140 alloy steel has high ductility. It can be formed using conventional techniques in the annealed
condition. It requires more pressure or force for forming because it is tougher than plain carbon steels.
Welding
AISI 4140 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.
Heat Treatment
AISI 4140 steel is heated at 845°C followed by quenching in oil. Before hardening, it can be normalised
by heating at 913°C for a long period of time followed by air cooling.
Forging
AISI 4140 steel is forged at 926 to 1205°C.
Hot Working
AISI 4140 steel can be hot worked at 816 to 1038°C.
Cold Working
AISI 4140 alloy steel can be cold worked using conventional methods in the annealed condition.
Annealing
AISI 4140 steel is annealed at 872°C followed by slowly cooling in the furnace.
Tempering
AISI 4140 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).
Hardening
AISI 4140 alloy steel can be hardened by cold working, or heating and quenching.
SAE 8620
Alloy steels contain a wide range of steels whose compositions exceed the limitations of C, Mo, Cr, Va,
Mn, Ni, Si, and B fixed for carbon steels. These steels are more responsive to mechanical and heat
treatments than carbon steels. AISI 8620 alloy steel is a common, carburizing alloy steel. This alloy steel
is flexible during hardening treatments, thus enabling improvement of case/core properties. The
following datasheet will provide more details about AISI 8620 alloy steel.
Applications
The AISI 8620 can be used for a number of medium-strength applications such as camshafts, fasteners,
gears, and chains/chain pins.
16MNCR5
16MnCr5 steel are alloyed case hardening engineering steels for parts which require core tensile
strength of 800 – 1100 N/mm² and good wearing resistance. It is an engineering material typically used
to manufacture piston bolts, camshafts, levers and other vehicle and mechanical engineering
components.
Soft Annealing
Heat to 650-700oC, cool slowly.
Intermediate Annealing
Temperature: 650-680oC.
Normalising
Temperature: 850-880oC.
Carburizing
Temperature: 880-980oC.
Case Hardening
Temperature: 780-820oC.
Core Hardening
Harden from a temperature of 860-980oC followed by water, oil or thermal bath quenching.
Tempering
Tempering temperature: 150-200oC.
Forging
Hot forming temperature: 1100-850oC.
20MNCR5
20MnCr5 steel are low alloyed engineering case hardening steel for parts which require core tensile
strength of 1000 – 1300 N/mm² and good wearing resistance. It is used in boxes, piston bolts, spindles,
camshafts, gears, shafts and other mechanical controlling parts.
Equivalent other international grades similar to 20MnCr5 steel
AFNOR : 20MC5
SAE : 5120
Soft Annealing of 20MnCr5 steel
Heat to 650-700 oC.
Carburizing
Temperature 900-950 oC . Cooing from carburizing temperature: water, oil, air, thermal bath, cooling
box.
Hardening
Core hardening 850 – 880 oC. Case hardening: 810 -8400C. Quenching media: water, oil, air, thermal
bath.
Tempering
Tempering temperature: 170-200 oC.
Forging
Hot Forming temperature: 1100-850 oC.
20MnCr5 grade steel is a case hardening steel used extensively for both carburizing and carbonitriding,
demonstrating reasonably high harden-ability and excellent forge ability.
This grade also has excellent weld ability, however care should be taken to avoid weld cracking.
Mach inability is approximately 80% that of mild steel.
Typical applications
Gears
Pins
Shafts
Camshafts
Drive wheels
Clutch plates.
42CRMO4
42CrMo4 Steel – SAE-AISI 4140 is classified as low alloy steel. Medium carbon steels are high strength
steels which include EN19 as an important member in low alloy category. These steels show positive
response to all variety of heat treatments. 42CrMo4 is a 1% chromium – molybdenum medium
hardenability general purpose high tensile steel – generally supplied hardened and tempered in the
tensile range of 850 – 1000 Mpa (condition T).
42CrMo4 is a high quality, high tensile alloy steel usually supplied readily machine able in ‘T’ condition,
giving good ductility and shock resisting properties combined with resistance to wear. We specialise in
the supply of EN19, 4140, 42CrMo4 Hot Rolled Steel Round Bars.
Equivalent grades of 42CrMo4 round bars:
AISI 4140, SAE 4140, 42CrMo4, 42CrMoS4, Din 1.7225
Equivalent grades of 42CrMo4 round bars:
EN Name En19
EN Number 1.0503, 1.1191, 1.1193, 1.1194
DIN C45, CK45, CF45, CQ45
BS 970 060A47, 080A46, 080M46
UNI C45 1C45, C46, C43
JIS S45C, S48C.
SCM420
SCM420 steel is a low carbon chrome moly steel used to manufacture surface carburized parts used in
auto parts, machinery, capital goods, shafts, fasteners, etc. which work in non-corrosive environments
usually below 250C.
It has high quench harden ability. SCM420 has good weld ability
PRODUCT ADVANTAGES
It has high strength and toughness
It has high harden ability
It has good thermal strength property
It has good mechanical properties.
SAE 52100
Alloy steels contain different varieties of steels that exceed the composition limits of Mn, C, Mo, Si, Ni,
Va, and B set for carbon steels. They are designated by AISI four-digit numbers. They respond more
quickly to mechanical and heat treatments than carbon steels. AISI 52100 alloy steel is known as a high
carbon, chromium containing low alloy steel. The following datasheet gives an overview of AISI 52100
alloy steel.
Fabrication and Heat Treatment
Mach inability
AISI 52100 alloy steel can be machined using conventional techniques. The mach inability of this steel
can be improved by performing shepherding annealing process at 649°C (1200°F) before machining.
Forming
AISI 52100 alloy steel can be formed using all conventional techniques such as cold forging or stamping
and hot or cold upset forming techniques.
Heat Treatment
AISI 52100 alloy steel is heated at 816°C (1500°F) followed by quenching in oil. Before performing this
process, it is subjected to normalising heat treatment at 872°C (1600°F) followed by slowly cooling in
order to reduce the machining stress.
Forging
AISI 52100 alloy steel is forged at 927 to 1205°C (1700 to 2200°F).
Hot Working
AISI 52100 alloy steel can be hot worked at 205 to 538°C (400 to 1000°F).
Cold Working
AISI 52100 alloy steel can be cold worked using conventional techniques in the annealed or normalised
conditions.
Annealing
AISI 52100 alloy steel is annealed at 872°C (1600°F) followed by slowly cooling to reduce cold working or
machining stress.
Hardening
AISI 52100 alloy steel is hardened by cold working, or heating and quenching. It can be carburized at
913°C (1675°F) followed by quenching. It is again heated at 788°C (1450°F) followed by quenching for
the second time.
Applications
AISI 52100 alloy steel is used in bearings in rotating machinery
