Massive Selection for BS EN 42CrMo4 | 1.7225 Alloy Engineering Steel in Slovakia
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.
This video shows some experiments I did do learn the sources of noise coming from my typical portable generator (genset), and to learn some methods by which the sources of noise could be attenuated.
The video shows only the experiments, NOT a finished method or recommendation.
I put the genset in a garage temporarily to see whether, and how much, high frequency attenuation I could realize from such a large enclosure. This is not an endorsement of putting a genset permanently in a garage, whether attached or detached from a house (a detached shed might be used instead, for just one example).
A great many viewers have added their thoughts, experiences, wisdom and concerns. These were most welcome.
Unfortunately, a much greater number of self-proclaimed experts, and outright idiots, most of them offering no information of their own, have taken to deluging me with slanderous comments on a daily basis, and I have had enough of it. Hence, the comments have been disabled for this video.
A Wright Sheffield Knives, Barlow pocket knife 60B Flat Bolsters
Made in Sheffield, England.
7 cm (2.8 inches) long, high polish, C70 carbon steel blade.
Flat nickel silver bolsters, polished flat buffalo horn handle scales.
Carbon steel knives need to be cleaned and oiled after use to prevent corrosion. Surface corrosion can be removed with fine emery cloth.