Product Description

ASTM 4130 4140 Alloy Steel Round Bar

Product Description

1.	Production Name	Alloy Steel Round Bar
2.	Standard	AISI,ASTM,JIS,DIN,EN,GB,GOST.
3.	Material	C10,S10C,AISI1571,EN1.1121,C15,S15C,C20,S20C,AISI1571,C22, C25,S25C,C30,S30C,AISI1030,C35,S35C,AISI1035,EN1.0401,S40, S40C,AISI1040,C45,S45C,AISI1045,EN1.1191,C50,S50C,AISI1050, C55,S55C,AISI1055,EN1.1203,C60,S60C,AISI1060,20Mn,AISI1571, 25Mn,AISI1026,30Mn,AISI1033,40Mn,AISI1 0571 0Mn,AISI1053, 30Mn2,AISI1330M35Mn2,AISI1335,40Mn2,AISI1345,15Cr,AISI5115, 17Cr3,20Cr,30Cr,34Cr4,37Cr4,40Cr,AISI5140,41Cr4,EN1.7035, AISI5145,AISI5147,15CrMo,20CrMo,AISI4118,30CrMo,AISI4130, 35CrMo,AISI4135,42CrMo,AISI4140,AISI4142,42CrMo4,EN1.7225, AISI3410,30CrNi3,ST52-3,A283 Gr.A,A283 Gr.B,EN1.0035,SS400, SM400A,A283Gr.C,S235JO,EN1.0114,S235JR,EN1.0038,S235J2, EN1.0017,SS490,SS5410,A572 Gr.50,A572 Gr.60,A572 Gr.65, A572Gr.70,A572,GR.80,S355JO,SM570,E335,EN1.0060,S235J2W, Q345,Q345B,etc.
4.	Specifications	Diameter	Φ10~Φ812mm,or as required.
		Length	2m,3m,5.8m,6m,8m,12m, or as required.
5.	Surface	Polished, Black, Grinding or as demand

AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.

SUPPLY RANGE OF AISI ALLOY 4140 STEEL BAR

-Dimension: Diameter4-1600mm, length below 16m

-Delivery Conditions

       Cold drawn 4-100mm

       Hot rolled 12-320mm

       Hot forged 130-1600mm

       Peeled: 30-160mm

       Grind: 4-600mm

Turned: 130-1200mm

-Surface: Black, smooth, turned, peeled, grind, polished, oiled and painted surface or other anti-corrosive treatment per customers’ requests

-End: Beveled, plain end, vanished or plastic caps can be provided if necessary

APPLICATION OF AISI ALLOY ROUND 4140 STEEL BAR

ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades.

Typical applications for 4140 tool steel uses include:

Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Xihu (West Lake) Dis. Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.
 

COMMON 4140 STEEL EQUIVALENCY

Country	USA	German	British	Japan	China	Australia
Standard	ASTM A29	DIN 17200	BS 970	JIS G4105	GB/T 3077	AS 1444
Grades	4140	1.7225/ 42crmo4	42CrMo4	SCM440	42CrMo	4140

 

4140 STEEL BAR CHEMICAL COMPOSITION

Standard	Grade	C	Mn	P	S	Si	Cr	Mo
ASTM A29	4140	0.38-0.43	0.75-1.00	0.035	0.040	0.15-0.35	0.8-1.10	0.15-0.25
EN 15710	42CrMo4/ 1.7224	0.38-0.45	0.6-0.9	0.035	0.035	0.4	0.9-1.2	0.15-0.30
JIS G4105	SCM440	0.38-0.43	0.60-0.85	0.03	0.03	0.15-0.35	0.9-1.2	0.15-0.30

 

MECHANICAL PROPERTIES OF AISI ALLOY 4140 STEEL BAR

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	65710 psi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-3 0571 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, CZPT (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinability)	65	65

 

Detailed Photos

Packaging & Shipping

Package:
Normal Packing:In Bundles or In Bulks or seaworthy package Special Packing:according to customers’ requirements.
Pipe End:Plain\Beveled\Thread with Coupling or cap.

Shipment:
a.length:≤5.8m loaded in 20FT Container with 25-27tons
b.length:≤11.8m loaded in 40FT Container with 25-27tons
Trade Terms: FOB / CIF / CFR
Payment Terms: L\C T\T
Loading Port: ZheJiang or ZheJiang port ,China
Delivery: within 15 days after received the 30% deposit of T/T.
We can produce special specification of the galvanized steel pipe products according to your requirement.

Application

Company Profile

Based on “Honesty Always be rewarded. ” to do steel export business. Our company already has done steel exports business for 10 years. Specializing in steel plate, steel bar, steel tubes, steel plate cutting parts, and steel deep processing service. With our competitive price and best service, we are committed to your one-stop service of steel material. Our clients are all over the world, USA, Canada, Brazil, Mexico, Venezuela, Australia, Greece, Middle East, Southeast Asia, and Africa.

In 2016, ZheJiang Steel Guang International Trade Co., Ltd is separated from the export department of ZheJiang Rongshenghui Trading Co.,Ltd. After long-term efforts, now we have a steel plate cutting factory, with 18 CNC cutting machines and 3 punching machines, and a heat treatment factory with 3 electric heat furnaces. Set up 2 offices in HangZhou City and HangZhou City. The company has developed into an integrated trader and manufacturer with the ability to export, import, process, logistics and distribution. The dvanced management brings high quality to automobile and wins good reputation from market and clients.

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Workshop

Our factory is located in Xihu (West Lake) Dis. City, ZheJiang Province, founded in 2009, is a set of steel plate research and development,manufacturing, sales in 1 of the professional manufacturers. The factory covers an area of more than 50,000 square meters, the existing workers more than 300 people, including more than 200 senior technical personnel, engineers more than 20 people, with an annual production of more than 100,000 tons of processing parts. 
our factory after more than 10 years of expansion has always been adhering to the integrity, mutual benefit and CZPT business philosophy, Based on the wide and thick steel plate production and scientific research base of HangZhou HangZhou, we are committed to becoming a first-class steel supplier and equipment supplier in China. 
With high quality products help “iron power” of the Chinese dream is our common vision, we have customers throughout Europe, north and South America, Middle East, southeast Asia, South Africa, Australia and other regions, we regard product quality as the lifeline, always adhere to the “quality first, service first” sales principle and “focus on professional, really sincere” the service idea, By the majority of customers praise and trust.

Forging

Preheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.

Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.

AISI 4140 Steel Grade Heat Treatment

• Annealing
  Heat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
• Normalizing
  Heat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
• Tempering
  Re-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

Hardening of AISI Alloy Steel 4140

AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.

SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC – 875 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.

OUR OTHER PRODUCTS ARE LISTED BELOW

 

Our Service

Pre-sale Service:
1.Good quality + Factory price + Quick response + Reliable service
2.100% responsible for the quality:all the products are produced by our professional workman and we have a high-work-effect foreigh trade team.
3.We have enough stock and can deliver in short time.
4.Customized designs,colors,sizes and logos are welcome,responsiveness to customers’ requirements.

After-sale Service:
1.We will count cheapest shipping cost and make invoice to you at once.
2.On time delivery.
3.Provide real pictures of loading container,email you the tracking NO. and help to CZPT the products until the goods arrive you.
4.24 hours online service,if any question,please contact us at anytime in your convenience.

Why Choose Us

1. More than 10 years Professional steel export service. Have own production line.
2. Advanced CNC machine.
3. Low cost&Quick Delivery&High quality.
4. Integrity, strength and quality of products recognized by the industry.
5. Most of our clients are international, the domestic well-known enterprises.
6. Has a complete scientific quality management system.
7. Can meet any requirements for all kinds of sheet metal processing with advanced equipment.

FAQ

Q1: How can I get a sample to check your metal work quality?
Answer: After price confirmation, you can require for samples to check our quality. We will provide you sample for free (value under USD35), as long as you afford the express freight.

Q2: How long can I expect to get the metal work sample?
Answer: After you pay the sample charges(if there is) and send us confirmed drawings, the sample will be ready for delivery in 5-7 working days. The samples will be sent to you via DHL, FedEx,UPS,TNT or EMS. It should arrive in 3-5 workdays. You can use your own express account or prepay us if you don’t have any account.

Q3: What about the leading time for metal work mass production?
Answer: Honestly, it depends on the order quantity. Normally, 15 workdays to 30 workdays after your deposit if no the samples are confirmed.

Q4: What will we do if the metal work quality is not ok ?
Answer: If the quality problem is caused by our mistake, we will make replacement order for free or pay the back product charge and handling charge back to you.
 

More questions, please send the email to us!
 

Standard Length Splined Shafts

Standard Length Splined Shafts are made from Mild Steel and are perfect for most repair jobs, custom machinery building, and many other applications. All stock splined shafts are 2-3/4 inches in length, and full splines are available in any length, with additional materials and working lengths available upon request and quotation. CZPT Manufacturing Company is proud to offer these standard length shafts.

Disc brake mounting interfaces that are splined

There are 2 common disc brake mounting interfaces, splined and center lock. Disc brakes with splined interfaces are more common. They are usually easier to install. The center lock system requires a tool to remove the locking ring on the disc hub. Six-bolt rotors are easier to install and require only 6 bolts. The center lock system is commonly used with performance road bikes.
Post mount disc brakes require a post mount adapter, while flat mount disc brakes do not. Post mount adapters are more common and are used for carbon mountain bikes, while flat mount interfaces are becoming the norm on road and gravel bikes. All disc brake adapters are adjustable for rotor size, though. Road bikes usually use 160mm rotors while mountain bikes use rotors that are 180mm or 200mm.

Disc brake mounting interfaces that are helical splined

A helical splined disc brake mounting interface is designed with a splined connection between the hub and brake disc. This splined connection allows for a relatively large amount of radial and rotational displacement between the disc and hub. A loosely splined interface can cause a rattling noise due to the movement of the disc in relation to the hub.
The splines on the brake disc and hub are connected via an air gap. The air gap helps reduce heat conduction from the brake disc to the hub. The present invention addresses problems of noise, heat, and retraction of brake discs at the release of the brake. It also addresses issues with skewing and dragging. If you’re unsure whether this type of mounting interface is right for you, consult your mechanic.
Disc brake mounting interfaces that are helix-splined may be used in conjunction with other components of a wheel. They are particularly useful in disc brake mounting interfaces for hub-to-hub assemblies. The spacer elements, which are preferably located circumferentially, provide substantially the same function no matter how the brake disc rotates. Preferably, 3 spacer elements are located around the brake disc. Each of these spacer elements has equal clearance between the splines of the brake disc and the hub.
Spacer elements 6 include a helical spring portion 6.1 and extensions in tangential directions that terminate in hooks 6.4. These hooks abut against the brake disc 1 in both directions. The helical spring portion 5.1 and 6.1 have stiffness enough to absorb radial impacts. The spacer elements are arranged around the circumference of the intermeshing zone.
A helical splined disc mount includes a stabilizing element formed as a helical spring. The helical spring extends to the disc’s splines and teeth. The ends of the extension extend in opposite directions, while brackets at each end engage with the disc’s splines and teeth. This stabilizing element is positioned axially over the disc’s width.
Helical splined disc brake mounting interfaces are popular in bicycles and road bicycles. They’re a reliable, durable way to mount your brakes. Splines are widely used in aerospace, and have a higher fatigue life and reliability. The interfaces between the splined disc brake and BB spindle are made from aluminum and acetate.
As the splined hub mounts the disc in a helical fashion, the spring wire and disc 2 will be positioned in close contact. As the spring wire contacts the disc, it creates friction forces that are evenly distributed throughout the disc. This allows for a wide range of axial motion. Disc brake mounting interfaces that are helical splined have higher strength and stiffness than their counterparts.
Disc brake mounting interfaces that are helically splined can have a wide range of splined surfaces. The splined surfaces are the most common type of disc brake mounting interfaces. They are typically made of stainless steel or aluminum and can be used for a variety of applications. However, a splined disc mount will not support a disc with an oversized brake caliper.