Quick Details
- Processing Service:Bending, Welding, Decoiling, Cutting, Punching
- Surface:Black Pickled HL Brushed Polished
- Payment Term:L/C T/T (30% Deposit)
- Package:Standard Seaworthy Packging
- Processing Time:7-30 days
- Port:Shenzhen,Tianjin,Shanghai.China
- Supply Ability: 100000 Tons Per Year
- Technique:Hot Rolled
- Type:Steel Round Bar
- Steel Grade:4140
- Standard:AISI/ASTM/DIN/NF/JIS/GB/BS
- Special Use:Mould Steel
- Place of Origin:China
- Dimensions:Can be negotiate
- Model Number:4140
- Brand Name:Songshun
- Application:Structural Steel Bar
- Alloy Or Not:Yes
- Brand Name:SongShun
What is AISI 4140 Steel?
AISI 4140 alloy steel round bar sheet plate belongs to medium hardenability steel.AISI 4140 steel has high fatigue strength and low notch sensitivity. Low-temperature impact toughness is also very high, no obvious temper
brittleness. AISI 4140 steel round bar is mainly used after quenching and tempering
state. it is used to manufacture high-strength parts under impact loads and the fittings with
large cross-sections and other stressed members. Such as the horizontal eccentric shaft of the horizontal forging machine, the crankshaft of the forging press, and etc.
Its equivalent grade is JIS SCM440 and DIN 1.7225. The properties and composition of 4140 steel round bar sheet plate as below.
4140 Steel Grade Equivalent Chart
Country
USA
Germany/UK/France
JAPAN
Standard
ASTM A29 / A29M-05
EN 10083/3-2006
JIS G4053-2008
Grades
4140
42CrMo4(1.7225)
SCM440
4140 Steel Chemical Composition
Grade
C (%)
Si (%)
Mn(%)
P (%)
S (%)
Cr (%)
Mo (%)
4140
0.38-0.45
0.17-0.37
0.50-0.80
≤0.035
≤0.035
0.90-1.20
0.15-0.25
1.Surface Treatment
Plate: Origin
Black, Orign cold rolled bright, Machined, Grinded
Bar: Origin
Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded
2.Heat treatment
specification
Heat treatment standard:
quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling;
It is used to
manufacture forgings that require higher strength and larger quenched and tempered sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear
axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m, and can be used for molds of bending
machines, etc.
Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company
with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of
over 20000 tons. In those years, we offer a wide range of steels to our customers from all over the world. And we enjoy high praise among them.
Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and
etc.Welcome your contact 24 hours a day!!!
Skype/Whatsapp/Wechat:+86-18269260283
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