21MnCr5 (1.2162) Custom Forged Parts | ISO Certified Open Die Forging Manufacturer In China

21MnCr5 (1.2162) Case Hardened Steel Overview

21MnCr5 (also known as 1.2162 in the DIN EN standard system) is a manganese-chromium case hardening steel defined in DIN EN 10084, with a carbon content of 0.18–0.24%, manganese 1.1–1.4%, and chromium 1.0–1.3%. After carburizing and quenching heat treatment, it has a surface hardness of 60-62 HRC with a tough impact-resistant core, making it the best material for cold forming dies, plastic molds, automotive parts and hydraulic parts.

Custom 21MnCr5 (1.2162) Forged Product Shapes

We could make a full range of 21MnCr5 forged steel parts out of 21MnCr5, and we can make them in any size and shape. All of the products are made as per all clients' drawings and technical manuals. Following is the shapes of forging products in grade 1.2162 that we could supply:

• 21MnCr5 forged shafts: step shafts, gear shafts, spindle shafts, pump shafts, rotor shafts, pinion shafts and custom machined shafts
• 21MnCr5 forged bars & rods: round bars, square bars, flat bars, rectangular bars and step bars, with diameter range from 50mm to 1200mm, max length up to 12000mm
• 21MnCr5 seamless rolled rings: forged rings, gear rings, flange rings, slewing bearing rings, valve body rings and contoured rolled rings, max outer diameter up to 5000mm
• 1.2162 forged hollow parts: sleeves, bushes, bushings, hubs, housings, shells, cases and thick-walled hollow bars
• 1.2162 forged solid parts: discs, disks, blocks, plates, flanges, die blocks and mold bases
• 21MnCr5 forged pipes & tubes: seamless forged pipes, tubing shells, casings, barrels and high-pressure vessel parts

Our production capacity covers single-piece weights ranging from 30 kg to 30,000 kg. We support both one piece sample order and mass production orders.

Chemical Composition of 1.2162 (21MnCr5) Forged Steel

Our 21MnCr5 forging steel meets the DIN EN 10084 international standard for chemical composition. We also have strict production plan and full traceability from steel ingot to finished parts. This means that every custom forging material will have stable and consistent quality

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We also could supply the chemical composition within the standard range based on your mechanical property and heat treatment needs, to help the final delivery products can work well for a long lifetime.

21MnCr5 (1.2162) Mechanical Properties & Heat Treatment

All of our 21MnCr5 forged parts are made with strictly heat treatment methods and will finally have great mechanical properties.Following is the detailed heat treatment method and mechanical property that we could supply.

Main Hardness Reference Data

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Surface Hardness After Quenching & Tempering

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Room Temperature Mechanical Properties (Normalized Condition)

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Advanced Melting & Refining

We use advanced ladle metallurgy (LF) for refining, vacuum degassing (VD) and vacuum oxygen decarburization (VOD) to melt all raw material. This will make sure that all our delivery products have high steel cleanliness, low gas content and minimal internal inclusions.

Forging & Heat Treatment Control

We have strictly forging production plans to make sure that all finished products have internal stable quality and fine grain structures.The forging temperature is between 1150 °C and 850 °C.We offer all types of heat treatment, including annealing, normalizing, quenching, and tempering, to meet all clients' mechanical properties. All heat treatment method are recorded and can be traced. Temperature is constantly monitored and recorded.

21MnCr5 (1.2162) Forgings Industry Uses & Cases Study

As this material has good case-hardening performance, great wear resistance and great core toughness, 21MnCr5 (1.2162) forged parts are widely used in many global industries. We have rich experiences in manufacturing custom 21MnCr5 forgings for the following main uses, with successful project references for buyers from Germany, USA, Italy, Australia, UAE, and other industrial countries.

1. Cold Forming Tooling & Die Manufacturing

21MnCr5 is the best choice material for cold metal forming tooling, including precision dies, punches, stamping molds and burnishing tools. Our custom 1.2162 forged die blocks and punch shafts are widely used by fastener manufacturers, gear producers and precision metal parts makers across Germany, Italy and other European countries. The carburized surface has a stable hardness of 60 HRC, which makes it very resistant to wear over time. The tough core effectively prevents cracking under high impact loads during cold forging, cold heading and cold stamping. We also supply pre-machined die blocks that are ready for your final machining and heat treatment.

2. Precision Plastic Injection Moulds (Molds)

We provide custom 21MnCr5 forged mould blocks, mould plates, and mould inserts for small and medium-sized plastic injection moulds.Our materials work well with both thermoplastic and thermosetting plastics. These 1.2162 steel mould parts are widely used in producing automotive interior parts, home appliance parts and consumer electronics. Our customers are mainly from the United States, Canada and Mexico. The material offers good size stability ,high polish ability and a high-quality surface .It also has good machinability, which can help our clients shorten production time.

3. Automotive Powertrain & Transmission parts

21MnCr5 forgings are widely used in the global automotive industry. These parts always have requirements on high surface hardness and good fatigue resistance. Our main 1.2162 automotive forgings include transmission shafts, gear blanks, bushings, sleeves, valve parts, shift forks and steering parts. These parts are made to handle heavy loads and fast rotation in powertrain and transmission systems. So that the passenger cars, commercial vehicles, and new energy vehicles (NEV) spare parts will last a long time and work well.All our automotive forgings are produced according to strict automotive industry quality standards.

4. Hydraulic & Pneumatic System parts

Our custom 21MnCr5 forgings include sleeves, hollow bars, valve bodies, piston rods and spool shafts. They are widely used in high-pressure hydraulic and pneumatic systems. The quenched surface of 1.2162 steel has great wear resistance for high-frequency sliding parts. And also has great resistance to hydraulic shock loads. These parts are used worldwide by makers of industrial hydraulic stations, construction machinery, agricultural equipment and pneumatic systems. We can custom hollow forgings of different wall thickness to meet your requirements on pressure rating.

5. General Engineering High-Wear Parts

Our 21MnCr5 forgings include sleeves, hollow bars, valve bodies, piston rods and spool shafts. These parts are suited for high-pressure hydraulic and pneumatic systems.The quenched surface of 1.2162 steel offers good wear resistance for high-frequency sliding parts. The tough core provides great resistance to hydraulic shock loads. These parts are widely used in manufacturers of hydraulic stations, construction machinery, agricultural equipment and pneumatic systems around the world.We can produce hollow forgings with suitable wall thickness to meet your requirements on pressure rating.

Quality & Inspection for 21MnCr5 Forged Parts

We control the quality strictly of every batch of 1.2162 / 21MnCr5 forgings ,from raw material melting, forging, heat treatment to final machining .All mechanical tests and inspections are conducted strictly follow international standards such as ASTM A370, ASTM E8, ISO 6892-1, ISO 6506-1, ASTM E10, ISO 6508-1, ASTM E18.Our quality management system is ISO 9001:2015 certified and our inspectors monitor carefully at every production stage.

Full-Scope Inspection & Certification

Every batch of our finished 21MnCr5 forged steel parts is supplied with a complete, traceable inspection report, including but not limited to:

• Material identification number, material grade & designation, order number, and drawing number
• Unique heat number, full heat chemical analysis report, melting method, and product verification analysis
• Complete heat treatment certificate, including cooling method, actual treatment temperature, holding time, cooling conditions, and full temperature-time graphic records for all re-heat-treatments
• Full non-destructive testing (NDT) records and certification of NDT inspectors, including ultrasonic testing (UT), magnetic particle testing (MT), penetrant testing (PT), and radiographic testing (RT) as required
• Complete mechanical properties test results, including tensile strength, yield strength, elongation, reduction of area, impact toughness, and hardness test results
• Metallographic examination results, including grain size, microstructure, and inclusion rating reports
• Residual stress measurement results (for process qualification and special use requirements)
• Sizes inspection report, including 3D measurement records for complex geometric parts
• Visual inspection report and surface finish verification
• Cleaning verification report, anti-rust treatment record and packaging confirmation
• Any other reports for non-standard requirements and special approval records

We can provide EN 10204 3.1 mill test certificates (MTC) for every order, and EN 10204 3.2 certification issued by a third inspection party (such as BV, SGS, TUV) is also acceptable upon request.

In-House Inspection Capabilities

Our in-house quality control laboratory is equipped with a full range of advanced inspection equipment to ensure 100% qualified delivery of your 21MnCr5 forgings. Our inspection capabilities include direct-reading spectrometer for chemical analysis, universal tensile testing machine, impact testing machine with low temperature chamber, Brinell, Rockwell and Vickers hardness testers, ultrasonic flaw detectors, magnetic particle testing equipment, coordinate measuring machine (CMM), and metallographic microscope. All inspection equipment is regularly calibrated and certified to make sure that all test results are accurate.

Why Choose Our 21MnCr5 (1.2162) Forging Parts from China

Jiangsu Liangyi is a professional open die forging manufacturer that mainly produces high-quality custom 21MnCr5 forged parts. Here are our main advantages:

• Full Custom Capability: We can make anything you need, from small precision parts weighing 30KGS to heavy large forgings weighing 30,000KGS. We only make forged material according to all clients drawing and technical manual.
• Strict Material Quality Control: We can produce high-quality steel ingots with advanced melting and refining methods. There is a full set of traceable materials from ingot melting, forged, heat treatment to finished part, which ensures that we can deliver every order with stable quality
• Advanced Production Equipment: We have 2000T–6300T hydraulic forging presses, 1–5T electro-hydraulic forging hammers, 5M CNC ring rolling machines, and over 10 computer-controlled heat treatment furnaces in our workshop.
• Professional Process Control: Our team has over 20 years of experience in 21MnCr5 forging and heat treatment. We could do proper forged and heat treatment methods to make sure that all our delivery material have good internal structure and mechanical properties and thus all of our parts can meet your technical manual.
• Comprehensive Quality Inspection: Full in-house inspection equipment and strict QC system. We will check the sizes and properties of all the parts to make sure they are in good condition.
• Rich Experiences: We have exported parts to more than 50 countries and regions. We have a lot of experience with international logistics, customs clearance, certification and global after-sales services.
• Competitive Prices & Flexible Delivery Time: We offer competitive prices for both small sample orders and mass production orders. Standard lead time: 15–30 working days, urgent order is also ok for us.
• One-Stop Service: We finish all the production in-house: melting, open die forging, ring rolling, heat treatment, rough/finish machining, surface treatment, inspection and delivery. Save your cost, time and management costs.
• Professional Technical Support: Our team can provide professional advice on material choice, forging process suggestion and heat treatment way. We can help you get the best performance and cost-effectiveness for your project.

21MnCr5 (1.2162) International Steel Equivalent Cross-Reference

21MnCr5 (1.2162) is an European standard case hardening steel. To help global buyers identify the equivalent grade in their regional standard, below is the official international cross-reference comparison table for 1.2162 / 21MnCr5 equivalent grades across major global standards:

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Note: Equivalent grades are based on similar chemical composition and mechanical properties.For mission-critical uses, we will verify the exact composition and your requirements Contact our technical team for support.

21MnCr5 vs Similar Surface-Hardening Steel Grades — Performance Comparison

According to DIN EN 10084, the manganese-chromium surface-hardening steel includes many grades with similar but different properties. Our engineers know the differences between 21MnCr5 (1.2162) and other hardening steels so that they can help you to choose the best material for your use.

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Why choose 21MnCr5 (1.2162)? 21MnCr5 has the highest carbon content among Mn-Cr surface hardening steels.It can reach 60–62 HRC surface hardness after carburizing, with good core toughness. It is the best choice for parts that need high wear resistance and have strong core strength at the same time. This includes cold forming dies, punch tools, plastic mold blocks and high-load automotive parts.

Frequently Asked Questions (FAQ) About 21MnCr5 (1.2162) Forgings

About Jiangsu Liangyi — Our Professional Knowledge and Qualifications

According to DIN EN 10084, 21MnCr5 (1.2162) is a surface hardening steel with strict chemical and metallurgical standards. To produce qualified 21MnCr5 forgings, we have professional knowledge in steel making, thermomechanical processing and heat treatment. Jiangsu Liangyi has more than 25 years of experience in this material.