28 Years Factory BS EN 42CrMo4 | 1.7225 Alloy Engineering Steel Denver
BS EN 42crmo4 Alloy Steel is a common chromium-molybdenum steel that usually used after quenchedand tempered, with high intensity, high hardenability. BS EN 42CrMo4round steel has better performance than 34CrMo4 steel due to the carbonand chromium content is higher. 42CrMo4 alloy steel has higher strength and hardenability. The 42CrMo4 alloy material alsohas high fatigue strength and good low-temperature impact toughness. The temper brittleness is not obvious. Although 42CrMo4 steel is mo...
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BS ENAlloy Steel
is a common chromium-molybdenum steel that usually used after quenched
and tempered, with high intensity, high hardenability. BS EN 42CrMo4
round steel has better performance than 34CrMo4 steel due to the carbon
and chromium content is higher.
has higher strength and hardenability. The 42CrMo4 alloy material also
has high fatigue strength and good low-temperature impact toughness. The
temper brittleness is not obvious.
Although 42CrMo4 steel is more expensive than 41Cr4 steel, it is more
preferable in terms of material properties. EN 42CrMo4 alloy
engineering steel materials have been widely used in automotive driving
elements. Otai Steel is able to supply you prime quality of 42CrMo4
alloy steel materials with wide range.
1.42CrMo4 Alloy Steel Supply Range
42CrMo4 Round bar Sizes: 80mm – 1200mm
Steel 42CrMo4 Flat and Plate: 10mm-1500mm thickness x 200-3000mm width
Other steel shape and sizes available according to your requirements.
Surface condition: Black, rough machined, peeled, turned or other requirements according to your requirements.
2.BS EN 42CrMo4 Alloy Steel Relevant Specifications and Equivalents
|BS EN 10250||Material No.||DIN||-3-1991||BS 970-1955||AS 1444||AFNOR|
3.42CrMo4 Alloy Steel Chemical Composition
|0.38-0.45||0.60-0.90||0.40 max||0.035 max||0.035 max||0.90-1.20||0.15-0.30|
4. DIN 42CrMo4 Alloy Steel Mechanical Properties
|Size Ø mm||Yield stress
|Ultimate tensile Stress,
KV, Joule, min.
|<40||750||1000-1200||11||295-355||35 at 20ºC|
|40-95||650||900-1100||12||265-325||35 at 20ºC|
|>95||550||800-950||13||235-295||35 at 20ºC|
5. Heat Treatment of 42CrMo4 Steels
Annealing of 42CrMo4 Steels
Heat steel 42CrMo4 forged steel slowly and thoroughly to 800-850°C;
Cool slowly in the furnace to the temperature 480°;
Complete annealing the steel in the air.
Quenched and Tempered (Q+T)
Heat 42CrMo4 steel slowly to 880°C;
Soak at this temperature then quench in oil;
Temper as soon as 42CrMo4 steel reach room temperature (20°C);
Heat uniformly to the suitable temperature of 560°C;
Withdraw the 42CrMo4 material from the furnace and cool in the air.
6. Forging of 42CrMo4 Alloy Steel
Preheat 42CrMo4 engineering steel uniformly and slowly;
Increase the forging temperature up to 1150-1200°C.
Always keep the forging temperature above at least 850°C
steel 42CrMo4 has only limited weldability. Preheating to 200-300°C is
strongly recommended; the upper limit should not be exceeded because of
risk for deterioration of the chrome layer.
Alloy steel 42CrMo4
can be friction welded. However, precautions are necessary so as to
limit the formation of undesirable microstructures in the welded zone.
8.Application of 42CrMo4 Alloy Steels
42CrMo4 alloy steel is widely used for engineering steel purpose, such
as: making various kinds of machinery, automobile, mining spare part,
the gearwheel of the engine, the driving gear of supercharger, the
connecting rob, the pinchock under the high pressure, parts for power
train applications, cold formed fastener components, shafts, gears,
drill collars for the oil exploration, etc.
Forged bars-Sorel Forge
Forging is the process of shaping metal using extreme forces. The standard mode of classification of forged metals is by the heat at which they were manipulated: cold, warm or hot. Hot forging is normally performed at about 1200 degrees, warm forging at 650-700 degrees centigrade and cold forging at room temperature.
Forging dates back to the 12th century, when hammers and anvils were used to shape metals for various purposes. Nowadays, industrial presses or hammers are the main tools, powered by compressed air, electricity, steam or hydraulics. Forging has the ability to create bars that are better than those machined or from cast steel. During the forging process, the grain of the metal is shifted to follow the contours of the shape of the steel. This can lead to improved strength characteristics and reduced brittleness.
Sorel Forge produces forged bars sizes from 10 inches (255 mm) up to 36 inches (915 mm) in diameter in carbon and medium alloy steel grades.
There are many types of forged steel bars. Some of the most common types are Carbon and Alloy Steel Hot Forged Bars, Cold Rolled Bright Bars and Carbon and Alloy Steel Hot Rolled Round Bars. The grade of manufacture is dictated by the cost and the application of the bars. Common grades of steel used include but are not limited to; 1045, 1018, 1020, 1030, 1035, 1070, 4130, 4140, 4145, 4150, 4320, 4330, 4330, 4340, 8620, 8630, 9310, A182F22, A350LF2, H13, SS410 etc . (PER AISI, SAE, ASTM A688, ASTM A322 and ASTM A182 as example).
The quality of forged steel is described in terms of surface quality, internal quality, a uniform and fine austenitic grain size, good response to heat treatment, good toughness on impact and cleanliness. Normally, forged steel products require some finishing and the forging process is the first step in a two or more step process.
Forged steel parts vary in size from less than a kilogram to over 500 metric tonnes. Huge steel bars are used a great deal in the oil and energy exploration sector where they need to be resistant to extreme forces.
Other applications of forged steel bars are for steel plants, dam gates and crane manufacture, cable machine manufacture, hydraulic press manufacture, shafts and axles for drives in diverse industries, and the car manufacture industry. In many sectors, steel bars have become indispensable to standard operational processes.
Sorel Forge adheres to strict quality control processes and we carry out a battery of regular tests on all our forged steel bars.
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