Factory Pricesae 5115 20crmnti 20crmntia Smnc420h 5120 20mncr5 1.7147 1.8401 30crmnti Carbon Steel Round Bar

• Type: Alloy Carburizing Steel
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Black/Peeling/Polishing/Machining/Grinding/Turning
• Alloy: Alloy
• Model NO.: 5115 20CrMnTi 1.7147 SMnC420H 5120 20MnCr5
• Special Use: Mold Steel
• Transport Package: Standard Packaging or Customized
• Specification: 100-12000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 72141000
• Production Capacity: 1000 Ton/Month

Product Description

Product Description

Carburized steel usually refers to steel that needs to be carburized, quenched and tempered at low temperature. It is generally low-carbon high-quality carbon structural steel and alloy structural steel, which can also be called carbon carburizing steel and alloy carburizing steel respectively. Alloyed carburized steel can improve the process properties of carburized steel because it is based on low-carbon carbon steel and added with various alloy elements with different chemical compositions, such as Cr, Mo, Ni, Mn, Ti, V, etc., which can inhibit the growth of austenite grain, improve hardenability and increase tempering stability. This kind of alloyed carburized steel is mainly used to make parts bearing heavy loads such as shafts, gears, pin rods and sprockets. According to the degree of hardenability, alloy steel carburized steel can also be divided into the following three categories: carburized steel with general hardenability, such as 15Cr, 20Cr and 20MnV; Carburizing steel with good hardenability, such as 20CrMo, 20CrMnTi, etc; Carburizing steel with the best hardenability, such as 12CrNi3A, 12Cr2Ni4A and 18Cr2Ni4WA.

chemical composition

 

composition	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
5140/40Cr/SCr440/SCr440H/41Cr4/ 1.7035/41Cr4	0.37-0.44	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	≤0.15
15CrMo/SCM415/15CrMo5/1.7262	0.12-0.18	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.4-0.55
20CrMo/SCM420/4118/18CrMo4/20CrMo5/ 1.7264/1.7243	0.17-0.24	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0 .25
30CrMo/4130/SCM420/25CrMo4/1.7218	0.26-0.34	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0.25
35CrMo	0.32-0.4	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0.25
4140/4142/42CrMo/SCM440/42CrMo4/ 1.7225/42CrMoS4	0.38-0.45	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.9-1.2	≤0.3	≤0.3	0.15-0.25
4150	0.48-0.53	0.15-0.35	0.75-1	≤0.035	≤0.04	0.8-1.1	≤0.25	≤0.25	0.15-0.25
4340/34CrNi3Mo/SNCM447/ 36CrNiMo6/1.6582	0.38-0.43	0.15-0.35	0.6-0..85	≤0.035	≤0.04	0.7-0.9	1.65-2	-	0.2-0.3
5120/20Cr/SCr420 /SCr420H /20Cr4/1.7027/20CrMn/20CrMnTi	0.17-0.22	0.15-0.35	0.7-0.9	≤0.035	≤0.035	0.7-0.9	≤0.25	≤0.35	≤0.06

 

Product Parameters

Item	Hard Chromed Rod	Induction Hardened Chromed	Nickel and Chrome Plating Bars
Tolerance	ISOf7	ISOf7	ISOf7
Roundness	Diameter tolerance / 2	diameter tolerance / 2	diameter tolerance / 2
Standard Length	-for Ø ≤ 60 mm: 5600 -6200mm -for Ø≥60 mm: 5800 -7200mm  Upon request: special lengths on all diameters	- for Ø ≤ 60 mm: 5600 - 6200 mm - for Ø ≥ 60 mm: 5800 - 7200mm  Upon request: special lengths on all diameters	Up to 6000 mm  Upon request: special lengths on all diameters
Surface Roughness	Ra max. 0.20 µm  (statistic average: 0.05-0.15 µm)	Ra max. 0.20 µm  (statistic average: 0.05- 0.15 µm)	Ra max. 0.20 µm (statistic average: 0.05-0.15 µm)
Chrome Layer Thickness	min. 900 HV (0.1)	min. 900 HV (0.1)	min. 25 µm
Straightness	≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm	≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm	max.0.20 mm/1000 mm

Application

Carburizing steel is mainly used for manufacturing gear, cam, piston pin and other parts.
Carburizing steel is mainly used to manufacture important parts requiring high wear resistance, bearing high contact stress and impact load, such as the gear of automobiles and tractors, camshafts and piston pins on internal combustion engines, etc.

heat treatment

The heat treatment of carburized steel is generally quenching and low temperature tempering after carburizing to obtain a surface layer with high hardness and a strong and tough core. According to the difference of steel composition, the commonly used heat treatment methods are as follows.
(1) Pre-cooling direct quenching and low temperature tempering after carburizing
This method is applicable to steels with low alloying element content and not easy to overheat, such as 20CrMnTi, 20CrTi, etc.
(2) Primary quenching
After carburizing, slowly cool to room temperature, reheat and quench and temper at low temperature. It is applicable to carbon steel and low alloy steel parts that are easy to overheat during carburization and parts after solid carburization.
(3) Double quenching
After carburizing, slowly cool to room temperature, reheat twice, quench and temper at low temperature. It is applicable to essential coarse grain steel and workpieces with high performance requirements, but it has long production cycle, high cost, and is easy to decarburize, oxidize and deform.
For 18Cr2Ni4WA and other steels with high alloying degree, if pre-quenched after carburizing, there will be a large amount of residual austenite in the carburized layer, which will reduce the hardness. For this reason, carburizing and air cooling are used in production to conduct high temperature tempering to decompose residual austenite, and then heating quenching and low temperature tempering are carried out

FAQ

1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.

2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;

3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.

5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese

6. How can we get your price?
A. We need the following information to quote for you:
1).  Product Name
2).  standard
3).  Material grade (chemical composition)
4).  dimension
5).  amount
6).  Special part drawing