Hot Rolled QT 42CrMo4 Alloy Steel Round Bar

Hot Rolled QT 42CrMo4 Alloy Steel Round Bar

1: 42CrMo4 Steel Introduction

42CrMo4 steel belongs to the ultra-high strength steel, with high strength and toughness, hardenability is also good, no obvious tempering brittleness, tempering treatment has a high fatigue limit and resistance to multiple impacts, low temperature impact toughness is good. The steel is suitable for the manufacture of large and medium-sized plastic molds requiring certain strength and toughness. Strength, high hardenability, good toughness, quenching deformation is small, high temperature has high creep strength and enduring strength.

42CrMo4 Steel Stock in Warehouse

2: 42CrMo4 Quality Standard

42CrMo4 steel according to EN 10250.

3: 42CrMo4 Steel Equivalent

4: 42CrMo4 Steel Chemical Composition

5: 42CrMo4 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: 42CrMo4 Steel Overviews

11: 42CrMo4 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: 42CrMo4 Steel Heat Treatment

Annealing
Heat 42CrMo4 steels to 800 ℃ – 850℃, hold until temperature is uniform throughout the section and cool in furnace.
Normalizing
Heat steel alloy 42CrMo4 to 870 ℃ – 900 ℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
Tempering
Re-heat 42CrMo4 grade steel to 550 ℃ – 700 ℃ 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
alloy 42CrMo4 steel bar, plate and square can be hardened by cold working, or heating and quenching.

42CrMo4 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 ℃ – 875 ℃, 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.

14: 42CrMo4 Steel Application

42CrMo4 steel is used in the machinery manufacturing industry, it is commonly used in the production of high-precision parts such as cutting tools, cold/hot deformation molds and measuring tools. In addition, 42CrMo4 is also widely used in the manufacture of key components such as pistons, valves and valve seats for diesel fuel pumps, as well as cutlery for medical equipment, cutting tools, machine parts, pneumatic hammer tools and piercing tools.

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.