• SAE4140 Steel Round BarBoard with Good Quality System 1
  • SAE4140 Steel Round BarBoard with Good Quality System 2
  • SAE4140 Steel Round BarBoard with Good Quality System 3
SAE4140 Steel Round BarBoard with Good Quality

SAE4140 Steel Round BarBoard with Good Quality

Ref Price:
get latest price
Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
2000 m.t./month

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Item specifice

Standard:
AISI,GB,JIS,GB,BS,DIN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,Forged
Shape:
Round
Surface Treatment:
Polished,Black,Peeling/Machined
Steel Grade:
SAE4140
Certification:
ISO,API
Thickness:
20-800mm
Length:
3000-9000mm
Net Weight:
custom

Quick Details

Steel Grade:  Alloy                   Steel Standard:  AISI, ASTM, BS, DIN, GB, JIS

Dimensions:  DIA: Max 800mm         Technique:  Hot Rolled or Forged    

Application:  Die Steel Bar             Alloy Or Not:  Is Alloy             

Special Use:  Mold Steel               Shape:  Round bars/Flat bar/Plate  

Heat treatment:  Annealing/Q+T        Test:  SGS/UT100%/Elements testing

Certificate:  ISO/Mill certificate

Technology:  Hot Rolled/Forged/Clod Drawn

Surface treatment:  Black/Peeling/Polishing/Machined     

Model Number:  4140/1.7225/42CrMo/SCM44/42CrMo4

 

Delivery condition:  Hot rolled or forged/ Peeled or black surface/annealed or QT

Packaging Details: seaworthy packing; 20ft: GW:17.5T; (5.80mX2.13mX2.18m,) 40ft: GW:22T; (11.8mX2.13mX2.18m,)

 

Description:

1,Size of 4140 Steel Round Bar

Round bar

Diameter(mm)

Length (mm)

20~800

3000~9000

Plate

Thickness(mm) 

Width (mm)  

Length (mm)   

Max:800

Max:2200

Max:9000

The specification can be customized.

 2,Chemical Compositions

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

42CrMo

0.38~0.45

0.17~0.37

0.50~0.8

≤0.035

≤0.035

0.9~1.2

0.15-0.25

≤0.3

4140

0.40~0.45

0.15~0.35

0.75~1.0

≤0.035

≤0.040

0.8~1.1

0.15-0.25

-

SCM44

0.38~0.43

0.15~0.35

0.60~0.9

≤0.030

≤0.030

0.9~1.2

0.15-0.30

≤0.25

1.7225

0.38~0.45

≤0.40

0.60~0.9

≤0.025

≤0.035

0.9~1.2

0.15-0.30

3,Features of 4140 alloy steel

1, Chromium molybdenum alloy steel 

2, Slightly higher carbon content then 4130

3, Greater strength and heat treatment 

4,Typical Applications 

1, Applications in the oil and gas sector

2, Connection rods, collets, conveyor pins, 

3, Gears, stem assemblies, 

4, Pump shafts and tool holders

Reference picture

SAE4140 Steel Round BarBoard with Good Quality

SAE4140 Steel Round BarBoard with Good Quality

 

Q:What are the common coil finishes available for steel coils?
The common coil finishes available for steel coils are hot-dip galvanized, galvannealed, electro-galvanized, and organic coated finishes such as painted or coated with polymer films.
Q:How are steel coils used in the production of agricultural irrigation systems?
Steel coils are used in the production of agricultural irrigation systems to create the pipes and tubing that transport water to crops. These coils are formed into various designs to meet specific irrigation needs, ensuring efficient and reliable water distribution for optimal crop growth.
Q:How are steel coils stored and transported?
Steel coils are typically stored in large warehouses or outdoor storage yards. They are stacked horizontally on top of each other, with wooden or steel supports placed between each coil to prevent damage. When it comes to transportation, steel coils are usually loaded onto flatbed trucks, railcars, or shipping containers. Specialized equipment such as coil racks or coil cradles may be used to secure and stabilize the coils during transport.
Q:I need new sprockets on my GSX-R1, I've heard that alumnium sprockets wear out twice as fast as steel and the difference is not noticable
The solution to your problem lies in what the purpose is of going up three teeth in the back... Are you hoping to gain more low end power and thus be able to race from 0-60 faster? If thats the case, Id go with aluminum and a 520 conversion on the chain. You WILL notice the difference in how fast the bike builds steam, because it will be easier for the engine to rotate the rear wheel having a lighter chain and sprocket set. Of course, this will wear out faster than steel - but the real question is, are you interested in going faster, or saving money? Speed aint cheap. Either pay for it, or stick with steel. Be careful going up three teeth on the rear without getting a new chain as well - your current chain may not have enough slack left in it...
Q:How are steel coils used in the production of electrical transformers?
Steel coils are an essential component in the production of electrical transformers as they provide the core structure that allows for efficient magnetic coupling and energy transfer within the transformer. The steel coils are wound tightly to create the primary and secondary windings, which are responsible for stepping up or stepping down the voltage levels in the transformer. This allows for the safe and efficient distribution of electrical energy.
Q:How are steel coils used in the production of steel chains?
Steel coils are used in the production of steel chains by being unwound and fed into a machine that shapes and forms the individual links of the chain. The steel coils provide the raw material needed to create the strong and durable chains, ensuring they have the necessary strength and integrity for various applications.
Q:Is Carbon Steel strong for swords?
Depends on the sword design. Some swords are high carbon, some a low carbon, some are made from a billet of alternating high and low carbon ('Damascus' steels). It all depends on what characteristics you want for your sword. Softer steels won't hold an edge as well but they offer great flexibility so your sword won't shatter when they make impact with armor or shields. Harder steels hold better edges but they're prone to binding in wooden shields and then being broken as soon as a bending force is applied along the weak axis of the blade. Japanese Katanas have both hard and soft steels to allow the blade to bend yet still hold strong edges. If you're making the sword from raw materials on your own, look up some different recipes for crucible steel. It's probably the most fun and involved process.
Q:given the buoyant economic growth of india, what you guys think about steel industry? what can be the major issues in this industry in the coming days
Since2003, India has been the largest sponge iron producer in the world. In 2005, out of total global production of 56.05 mt of sponge iron, India produced around 11.1 mt (19.8%). In line with production target of 110 mt of steel (National Steel Policy) by FY20, many steel producers have announced their capacity expansion plans by signing MOUs with various state governments like Chattisgarh, Orissa and Jharkhand. The steel producers are expected to add around 8 mt of capacity by FY 08. CARE estimates that during 2006-09, demand for steel in the domestic market would grow at a CAGR of 8.4%. HR steel because of its widespread applicability is expected to grow at a CAGR of 17.5%. During this period, major demand drivers would be Consumer durables, Automobiles and Construction. Domestically, steel prices of flat products follow the international trend. Globally, steel prices are expected to firm up with continued growth in steel consumption. Further, the winds of consolidation have gathered pace with Arcelor-Mittal merger and latest acquisition of Corus by Tata Steel. The Indian steel industry has announced huge capacity expansions. With commissioning of these capacities demand-capacity ratio is expected to decline in FY 09 due to excess capacity. Will this lead to a drop in prices with commissioning of these capacities? With China and India becoming the focus of major global steel companies, will the consolidation of steel industry in these countries continue? For comprehensive analysis and CARE’s future outlook on the sector, please refer to the exhaustive report on the Indian Steel Industry by CARE Research.
Q:What are the common methods of cutting-to-length steel coils?
The common methods of cutting-to-length steel coils include shearing, slitting, and sawing.
Q:What are the different methods of steel coil surface cleaning?
Some of the different methods of steel coil surface cleaning include pickling, shot blasting, and chemical cleaning. Pickling involves immersing the steel coil in an acid solution to remove oxides and scales. Shot blasting uses high-speed particles to remove rust, scale, and paint from the surface. Chemical cleaning involves using specialty chemicals to dissolve contaminants and restore the steel coil's surface.

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