20MnCr5 Alloy Hot Rolled Round Steel Bar

20MnCr5 Alloy Hot Rolled Round Steel Bar

1: 20MnCr5 Steel Introduction

20MnCr5 steel is a common alloy carburizing steel which has a wide range of applications in industrial manufacturing. This steel is characterized by high surface hardness, maintaining high toughness in the core, good hardenability and good wear resistance. Its chemical composition includes carbon, silicon, manganese, chromium, molybdenum and other elements, of which carbon is one of the most important elements in steel, which, together with alloying elements, forms an alloy carburizer, which improves the surface hardness and wear resistance of steel. Silicon and manganese can refine the organization of steel and improve the strength and toughness of the material. Chromium and molybdenum further enhance the wear and corrosion resistance of steel.

20MnCr5 Steel Stock in Warehouse

2: 20MnCr5 Quality Standard

20MnCr5 steel according to EN 10250.

3: 20MnCr5 Steel Equivalent

4: 20MnCr5 Steel Chemical Composition

5: 20MnCr5 Steel Mechanical Properties

The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment will cause different mechanical properties, for example, normalized, tempered, QT. If you want to know the properties, please kindly contact the salesman.

6: Qilu Company Profile

Hunan Qilu was engaged in steel exporting since 2008 year, the former was the sales company for Qilu Special Steel co.,ltd which was founded in 1986 year. Now Hunan Qilu Metal is one of most professional steel manufacturer and exporter in China. We already exported steel material to Germany, UK, Ireland, Greece, Italy, Poland,Belgium, Estonia, Latvia, Spain, France, Netherlands, Portugal, Czech republic, Finland, Russia, Belarus, Canada, Mexico, Brazil, Chile, Colombia, Peru, Argentina, Venezuela, Thailand, Indonesia, Vietnam, Singapore, Malaysia, Philippines, UAE, South Africa, Zambia, Australia etc.

7: Production Equipment

The company owns advanced special steel smelting facilities and forging processing equipment, the main steel-making equipment include 2 set of 50t and 25t ultra-high power electric arc furnaces, 2 set of 60t and 30t LF refining furnaces, 2 set of 60t and 30t vacuum degassing refining furnace. 4 sets of 1-20t electroslag re-melting furnaces.

The main forging equipment mainly include:3 sets of 3t 5t and 8t electro-hydraulic hammers, 3 sets of high-speed forging units of 1600t, 2000t and 4500t respectively.

8: Our Company Certificate

We already passed ISO 9000 : 2015 certificate of quality system, and we could supply steel forging material with all kinds of Classification Society Certification, such as ABS, ,DNV, BV, CCS etc. We also supplied steel material to oil industry with API certificate, such as API20B, API6A etc.

9: Stock&Warehouse

Besides forging material, we also supply hot rolled material from Dongbei special steel, Tiangong, Changcheng special steel, Lihuai Special Steel, Laisteel, Juneng steel, Yongsteel, Xinxin steel, Shijiazhuang steel etc. We have two warehouses for hot rolled material. Further processing such as heating treatment, rough machining and milled are also provided by us.

10: 20MnCr5 Steel Overviews

11: 20MnCr5 Steel Tolerance

12: Packing& Delivery

For the delivery, we will choose LCL, FCL and Bulk carrier according to order quantity. Usually if the quantity is less than 10tons, we will recommend LCL. If the quantity is more than 100tons, we will recommend bulk carrier. Usually FCL will be the most common for delivery.

In order to better ensure the safety of your goods, we will provide professional, environmentally friendly, convenient and efficient packaging services. Such as pallet, wooden box, package with woven bag etc.

13: 20MnCr5 Steel Heat Treatment

Preheating

First, the workpiece is heated to an appropriate temperature of 550-650 degrees Celsius, a step that prepares it for subsequent hardening and tempering treatments.

Hardening

Subsequently, the workpiece is quickly cooled by immersing it in oil or water to rapidly cool the steel and achieve high hardness.

Tempering

After quenching, the workpiece is heated to an appropriate temperature of 150-250 degrees Celsius, held for a period of time and then cooled. This step is designed to remove quenching stresses while improving toughness.

14: 20MnCr5 Steel Application

20MnCr5 is widely used in mechanical parts that require high wear resistance and high surface hardness, mainly including:

Automobile industry: used to manufacture gears, bearings, camshafts, crankshafts and other important parts.

Mechanical manufacturing: used to produce high wear-resistant mechanical parts, such as gear teeth, connecting rods, bushings and so on.

Other fields: applied to sprockets, pins and other parts with high surface hardness and wear resistance requirements.

15: Delivery Condition

For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed or QT, black surface or rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed or QT, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed or QT, black surface.