18CrNiMo7-6 Hot Rolled Alloy Steel Bar

18CrNiMo7-6 Hot Rolled Alloy Steel Bar

1: 18CrNiMo7-6 Steel Introduction

18CrNiMo7-6 structural steel is a widely used alloy structural steel in Europe with high flexural strength and wear resistance. The heart of this steel also has high hardness and toughness, resulting in high overall mechanical properties. Its chemical composition includes the elements carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, and molybdenum, with specific contents ranging from 0.15% to 0.21% of other elements.

18CrNiMo7-6 Steel Stock in Warehouse

2: 18CrNiMo7-6 Quality Standard

18CrNiMo7-6 steel according to EN 10250.

3: 18CrNiMo7-6 Steel Equivalent

4: 18CrNiMo7-6 Steel Chemical Composition

5: 18CrNiMo7-6 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, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, 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: 18CrNiMo7-6 Steel Overviews

11: 18CrNiMo7-6 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: 18CrNiMo7-6 Steel Heat Treatment

Hot Forging

To be carried out between 1150°C and 1150°C to ensure that the material has good plasticity and uniform heating.

Annealing

Annealing temperatures range from 650°C to 700°C. This step helps to reduce the hardness of the material and improve its plasticity and toughness.

Carburizing

Carburizing temperatures range between 880°C and 980°C. This process increases the carbon content on the surface of the steel part, thus improving its hardness and wear resistance.

Hardening

It consists of two stages, i.e., Hardening I (heart hardening) is carried out at 830°C to 870°C and Hardening II (surface hardening) is carried out at 780°C to 820°C, usually using oil as the cooling medium.

Tempering

Tempering is carried out at temperatures between 150°C and 200°C. Tempering is done to stabilize the material and reduce internal stresses generated during heat treatment.

14: 18CrNiMo7-6 Steel Application

18CrNiMo7-6 is widely used in the machinery manufacturing industry, especially in the field of manufacturing large gears, transmission shafts, turbine shafts and other high-load and high-speed working parts. The alloy steel has good wear resistance and impact resistance, and can meet the requirements of use in a variety of complex working conditions.

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.