Hot Selling Forged Carbon Alloy Steel Round Rod Diameter 250mm Structure Mild Carbon Steel Round Bar

Product Description

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Product Description

Round steel is a kind of hollow cylindrical metal material, which is widely used in construction, machinery manufacturing, automobile manufacturing, energy, transportation and other industries.
Round steel is mainly made of carbon steel, alloy steel and tool steel.
Among them, carbon steel round steel refers to steel with carbon content within the range of 0.20% to 0.55%.
Carbon steel round steel is an economical and practical structural material with good weldability, plasticity and machinability

Alloy steel round steel refers to the steel with a certain amount of alloying elements (chromium, manganese, cobalt, boron, molybdenum, vanadium, etc.), which can obtain higher strength, hardness, corrosion resistance and wear resistance.
Tool steel Round steel is a kind of high-speed tool steel material, which has the advantages of high hardness, high red hardness and wear resistance.
Therefore, the material characteristics of round steel are very different from the scope of application.
 

 

1. 42CrMo4  steel equivalent grade:

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	SCM440	42CrMo	4140
		42crmo4

2. 42CrMo4 steel chemical composition:

Standard	Grade	C	Mn	P	S	Si	Ni	Cr	Mo
ASTM A29	4140	0.38-0.43	0.75-1.00	0.035	0.04	0.15-0.35	-	0.8-1.10	0.15-0.25
EN 10250	42CrMo4/	0.38-0.45	0.6-0.9	0.035	0.035	0.4	-	0.9-1.2	0.15-0.30
	1.7225
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

 
3. 42CrMo4 steel mechanical properties:
(Different Property canbe catched by adjusting Quenched and Temepering tempreture and time )

Yield Strength (MPa)	Tensile Strength (MPa)	Elongation	Reduction of area	AKV (J)
930 min	1080 min	12% min	45% min	63 min

4. 42CrMo4 steel applications:

high strength stud bolt, threaded rods, wind power bolt, prestressed anchor bolts, post stressed anchor bolt, steel tie rod, tie bar, tension rod, tension bar etc. Shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive shaft, mandrel shaft, transmission shaft, screw rod etc. CNC machines, precision CNC machines etc. Ejector pins and Ejector rods
 

5.Supply Size range

Delivery condition	Diameter ranges
Hot tolled	M12-M310
Hot rolled+Q&T(Quenched and tempered)	M12-M310.
Cold drawn +Q&T(Quenched and tempered)	M10-M100
Peeled / Peeled+Q&T	M10-M100
Forged/Forged+Heat treatment.	M250-M1000

6.Product Features:

1. High strength and toughness.
2. Great property of quenching and can be deep hardened.
3. Less tempering brittleness tendency.
4. Great machining performance under high temperature and nice appearance after machining.
5. Good performance in weld ability.
6. Excellent performance in impact absorption, such as where the hammer may bounce back and has barely any damage caused upon impact.

Special Steel Round Bar	Grade	Spec	Dimension	Steel Grade	Application industry
	Quality carbon structural steel	GB/T699  JIS G 4051 ASTM A29  SAE,EN10083 (Others)	12-260	10# ,20#,45#, 65Mn,SAE1080,S45Cetc	,,,For Manufacturing of All Kinds of Bearing  Parts,  Connecting Rod. Rigging Metal Tools etc.
	Low alloy high-strength steel	GB/T1591,(Others	13-260	Q355 series,Q460Cetc	,, Mechanical,Car,Engineering machinery
	Alloy structural steel	GB/T3077,JIS,ASTM A29, EN10083,(Others)	13-260	20Mn2-45Mn2,25MnV,27SiMn-42SiMn,20Cr-40Cr,12CrMo-42CrMo,20CrMn,40CrMn,SCr420,SCr440,SCM420,SCM440,41Cr4,20CrMoA,30CrMoA,20Cr2MoA,20CrNiMo,20Cr2Ni4A,SAE4340,20Cr2Ni4A,30CrMnSiA etc	,,, Mechanical,Car,Bridge,Petrochemical industry
	Bearing steel	GB/T 18254,(Others)	14-200 5-25        wire rod and cold drawn wire	GCr15,GCr15SiMn,C&U1,C&U2,GCr15-JN,SCP52100,SCPSS52100,GCr15S700,100CrMn6,SUJ2,SUJ2S1,SAE1055,S55C,G20CrNiMoA(SAE8620),GCr15etc	,,, Mechanical ,Car ,Electric machinery,Engineering machinery etc
	Spring Steel	GB/T1222,JIS,SAE,EN,(Others)	13-120	60Si2MnA,60Si2CrA,60Si2CrVA,55CrMnA,50CrVA,SUP9, SUP9A ,SUP11A, 55Cr3 ,51CrV4 ,52CrMoV4 ,SAE5160 SAE6150 ,SAE9254, 60SiCrVAT, 52CrMoV4 ,55SiCr etc	,, Car,High Speed railway,Locomotive
Round billet	300mm-600mm ( According to the different requirement)
Large section bar	80mm-350mm ( According to the different requirement)
Forging	180mm-1500mm ( According to the different requirement)

 

 

 

Packing & Delivery

 

Company Profile

 

Liaocheng Huajian Steel Co.,Ltd is located in Liaocheng, Shandong Province, which is known as "the Water City of Jiangbei", and our company was established in the year 2012. We are a modern private enterprises which are specialized in processing and exporting steel materials in China and win high reputations from our customers.

Our main items are:
1. Steel plate, steel sheet, wear resistance steel plate, high strength steel plate, HRC MS plate, checkered steel plate, alloy steel plate /coil etc..
2. Cold rolled steel coil/sheet,galvanized steel coil/sheet, galvalume steel coil/ sheet, prepainted steel coil/ sheet,corrugated roofing steel sheet
3. steel profiles, such as, steel angle section, H beams, I beams, Channel section etc..
4. Carbon steel pipe, seamless steel pipe, welded steel pipe,spiral welded pipe, galvanized steel round and square tubes, and stainless steel etc.

 

Hot Sale

 

 

FAQ
1) why you chose us ?
Because we have large stocks and we have long term cooperative factories. We can get the lowest ex-factory prices. The price are quite reasonable and it is lower than our commercial peers. Also, we can guarantee the quality of our products.
2) Our minimum order quantity:
15 Metric Tons
3) How about the Delivery Time?
The steel pipe will be produced since we getting your deposit by T/T or original L/C, and delivery to the port of loading within 25~30 days. 
For normal size, some stocks in our factory now, we can shipment within 7~10 days after receive the deposit.
4) What kind of payment does your company support?
T/T, 100% L/C at sight.
5) Do you charge for the samples?
No, we provide samples free, you pay for the freight charge.
6) Main market:
Mid East South America South Asia Africa Southeast Asia Northern Europe Western Europe etc.


If you are interested in our products, please contact with me freely !