42CrMo is a kind of medium-carbon alloy structural steel with good comprehensive performance and good hardenability. It is often used to manufacture gear, connecting rod, high strength bolt and other important parts in machining process. The engineers often saw a material of 42CrMo4 mentioned in the European standard drawings. Is it be alternative with 42CrMo?

What are the differences between them and their characteristics? We hereby discuss in depth from the terms of chemical analysis, mechanical properties and hardenabilit to find out the conclusion.

1. They come from different standards from different counties. 42crmo is the material in Chinese standard GB/T 3077, specification of alloy structural steel. The material of 42CrMo4 belong to EN 10083 series, hardened and tempered steel.
2. Chemical composition difference. There are tiny difference in content of element Si shown in the figure below, the Si content in 42CrMo is small than that in EN10083. In addition, according to GB3077, P and S content can be divided into three levels, while EN10083 only limits its maximum content.Different hardenability requirements. The hardenability of GB3077 has no the specific value of the bandwidth of quenching. The buyer and the supplier may discuss a solution on their own if has special requirements. The specific value of hardened bandwidth is specified in EN10083, which is divided into three grades H,HL,HH for reference when ordering.
3. Different delivery condition. 42CrMo tubing is usually delivered in the condition of hot rolled and hot forging. If the customer needs the heat treatment condition (annealing, normal goods, high temperature tempering), it shall be specified in the contract. For EN10083 42CrMo4 tubing, there are five delivery conditions for choice: no heat treatment, heat treatment, softening annealing, quenching and high temperature tempering and other heat treatment.
4. From the analysis of the terms such as chemical composition, hardenability, mechanical properties, grain size and delivery condition of the two materials, we can conclude that the EN10083 standard is more strict and the testing requirements for mechanical properties are specified, which is convenient for the calculation of 42CrMo4 steel in actual us. More information bout 42CrMo4 steel pipe and 42CrMo4 bars, call for us or email

What’s The Difference Between 42CrMo And 42CrMo4最先出现在Bos-Hyd。

42CrMo is a Chinese standard chromium-molybdenum high strength steel with good hardenability and toughness. This steel usually adopts quenching after tempering as the heat treatment solution. After tempering, it has relatively high fatigue and impact resistance and no obvious temper brittleness.

42CrMo/4140 has good mechanical properties and machinability, mainly in the form of plate and round rod. In the processing industry, the 42CrMo plate for the mold processing production, the 42CrMo round rod for mechanical direct processing parts.

42CrMo bar and plate is mainly used for manufacturing important structural parts working under high load such as hydraulic shafts, transmission gear, supercharger gear, engine cylinder; Spring clip, oil drill pipe clamp first class parts. In the mold manufacturing industry, 42CrMo is also suitable for large and medium-sized plastic molds with certain strength and toughness.

The corresponding material of 42CrMo steel as per the European Union, Japan, Germany and the United States standards respectively are: 42CrMo4, SCM440, 42CrMo4, 4140. In most situation they can be alternative materials, unless there is a special note or used for special purpose. Their differences are mainly existed in chemical elements, details showed as follows:

42CrMo, 4140, SCM440, 42CrMo4 High Tensile Steel Bar最先出现在Bos-Hyd。

4140 Round Steel Rod is a Chromium-Molybdenum through-hardening steel rod of medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties.

Hardness is another key mechanical property of 4140 steel affected by temperature. Typical hardness of hot rolled 4140 round steel bar is about 28-32 HRC at room temperature. However, as the temperature increases, the hardness of the steel decreases. At 200°C the hardness drops to about 25-28 HRC and at 400°C to about 22-25 HRC. If by Induction hardened , 4140 round steel bar can be surface hardened to 58HRC.

Advantages Of Our 4140 Round Steel Rod and Chrome Rod

1. Precision material parts strictly according to customer&request drawing,packing and quality request
   2.Tolerance of 4140 chrome rod: can be kept in +/-0.01mm
   3.The most advanced inspector to ensure the quality
   4.Experienced technology engineers and well trained workers
   5.Fast and timely delivery. Speedily &professional service
   6.Give customer professional suggestion while in the process of customer designing to save costs

The Max Hardness For 4140 Round Steel Rod?最先出现在Bos-Hyd。

SCM440 quenched and tempered steel tube is used extensively in applications for automotive industry, Hydraulic, Mining and oil and gas drilling industry. scm440 Q&T tubes include scm440 Q&T seamless steel pipes and scm440 Q&T drilling hollow bars. scm440 steel pipe has higher strength than 4130 Pipe.

Heat Treated Steel Tube we produce are Round Steel Tubing such as Annealed Tubing, normalized tubing and quenched & tempered Steel Tubing.

SCM440 Q&T steel tube we supply includes following advantages:

Consistent mechanical properties
Even thickness on the whole bars
Deep mechanical properties
Even hardness on the whole bars
Tougher and Increased strength

1. scm440steel equivalent material:

2. scm440steel chemical composition:

3. scm440steel mechanical properties:

SCM440 quenched and tempered steel tube最先出现在Bos-Hyd。

Common 4140 Steel Specifications

4140 Steel Bar Chemical Composition

AISI 4140 Steel Grade Heat Treatment

• Annealing
  Heat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
• Normalizing
  Heat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
• Tempering
  Re-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

4140 steel bar is widely used in hydraulic field, as a professional hydraulic solution expert, Bos-Hyd specialized in 4140 hydraulic cylinder barrels, 4140 chrome plated bars, 4140 hollow chrome bars and other 4140 steel products.if you have any inquiry about AISI 4140 steel bars and tubes, please contact us here

42CrMo4 | SCM440 | AISI 4140 Steel Bar最先出现在Bos-Hyd。

42CrMo is a kind of medium-carbon alloy structural steel with good comprehensive performance and good hardenability. It is often used to manufacture gear, connecting rod, high strength bolt and other important parts in machining process. The engineers often saw a material of 42CrMo4 mentioned in the European standard drawings. Is it be alternative with 42CrMo? What are the differences between them and their characteristics? We hereby discuss in depth from the terms of chemical analysis, mechanical properties and hardenabilit to find out the conclusion.

1. They come from different standards from different counties. 42crmo is the material in Chinese standard GB/T 3077, specification of alloy structural steel. The material of 42CrMo4 belong to EN 10083 series, hardened and tempered steel.

2. Chemical composition difference. There are tiny difference in content of element Si shown in the figure below, the Si content in 42CrMo is small than that in EN10083. In addition, according to GB3077, P and S content can be divided into three levels, while EN10083 only limits its maximum content.

2. Different hardenability requirements. The hardenability of GB3077 has no the specific value of the bandwidth of quenching. The buyer and the supplier may discuss a solution on their own if has special requirements. The specific value of hardened bandwidth is specified in EN10083, which is divided into three grades H,HL,HH for reference when ordering.

3. Different delivery condition. 42CrMo tubing is usually delivered in the condition of hot rolled and hot forging. If the customer needs the heat treatment condition (annealing, normal goods, high temperature tempering), it shall be specified in the contract. For EN10083 42CrMo4 tubing, there are five delivery conditions for choice: no heat treatment, heat treatment, softening annealing, quenching and high temperature tempering and other heat treatment.

4. Impact test requirements difference. When doing the impact test according to GB/T2975, 42CrMo sampling in the 1/4 of the outer diameter of the bar as the center of bar when diameter is greater than 50mm. When the diameter of the sample rod is 25mm, it shall be modulated according to the requirements of heat treatment process, and then the tensile test specimen shall be tested. In the EN10083 standard, the bar is first tempered in accordance with the recommended heat treatment. And when the sampling the bar which diameter is greater than 25mm, the sampling position should be centered 12mm around the outer diameter of the bar. In addition, 42CrMo uses the Charpy U-notch toughness, while the 42CrMo4 uses the charpy V testing. The two notch has the same depth but the different radius of the notch bottom(U type 1mm,v type 0.25mm).

From the analysis of the terms such as chemical composition, hardenability, mechanical properties, grain size and delivery condition of the two materials, we can conclude that the EN10083 standard is more strict and the testing requirements for mechanical properties are specified, which is convenient for the calculation of 42CrMo4 steel in actual us. More information bout 42CrMo4 steel pipe and 42CrMo4 bars, call for us or email 

Difference between 42CrMo4 and 42CrMo最先出现在Bos-Hyd。

42Crmo4/4140 chrome cylinder rod is made of DIN 42CrMo4 / AISI 4140 /JIS SCM440 steel. Cr-Mo Alloy Chromium Plated Steel Bar has greater tensile strength, yield strength, and elongation than medium-carbon hard chrome shaft. other heat treatment can be added.Through heat treatment, induction, the bar achieves high degree of scalability. Applies to piston rod, hydraulic cylinder bar, pneumatic cylinder rod, mechanical guide bar, all kinds of machinery column rod, sport equipment, aerospace engineering, and various types of machinery.

Delivery Condition:
Hard Chrome Piston Rod ( HRC 15-20)
Quenched & Tempered (Q+T) Rod (HRC 28-32)
Induction Hardened Rod (HRC 55-62)
Q+T Induction Hardened Rod (HRC 60-65)
Corrosion resistance:
Test in natural salt spray according to ASTM B 117-96 hours.

Advantage Of Our 42Crmo4/4140 chrome cylinder rod/chrome bar/chrome shaft

1. Precision material parts strictly according to customer&request drawing,packing and quality request
   2.Tolerance: can be kept in +/-0.01mm
   3.The most advanced inspector to ensure the quality
   4.Experienced technology engineers and well trained workers
   5.Fast and timely delivery. Speedily &professional service
   6.Give customer professional suggestion while in the process of customer designing to save costs

What is the advantage of 42Crmo4/4140 chrome cylinder rod最先出现在Bos-Hyd。

36CrNiMo4 Alloy Steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. 36CrNiMo4 Alloy Steel is now available with improved machinability, which greatly increases feeds and/or speeds, while also extending tool life without adversely affecting mechanical properties.

DIN 36CrNiMo4 Alloy Steel has good shock and impact resistance as well as wear and abrasion resistance in the hardened condition. 36CrNiMo4 Alloy Steel steel properties offer good ductility in the annealed condition, allowing it to be bent or formed. Fusion and resistance welding is also possible with our 36CrNiMo4 alloy steel.

Application

36CrNiMo4 is an alloy structural steel used in gears, cylinder piston rod, piston parts and other special wear-resistant parts for automobiles and airplanes.

36crnimo4 Steel Chemical Composition

36crnimo4 equivalent

We are able to offer best hard chrome rods and chrome bars for our customers. If you are interested in our chrome plated bars, hard chrome rod, induction hardened chrome bars.

Want to purchase Our chrome plated rods ?

Please contact us through below methods for more information.

Email: sales@bos-hydraulic.com 
Tel & WhatsApp & Wechat  : +8613681801718

36CrNiMo4 Alloy Steel |1.6511| 4340|EN24 Steel最先出现在Bos-Hyd。

Medium carbon steels are high strength steels which include 42CrMo4 as an important member in low alloy category. These steels show positive response to all variety of heat treatments. 42CrMo4 is a 1% chromium – molybdenum medium hardenability general purpose high tensile steel – generally  supplied hardened and tempered in the tensile range of 850 – 1000 Mpa (condition T). 42CrMo4 alloy is a high quality, high tensile alloy steel usually supplied readily machineable in ‘T’ condition, giving good ductility and shock resisting properties combined with resistance to wear. 

What is 42CrMo4 Steel?

• EN19, AISI 4140, SAE 4140, 42CrMo4, 42CrMoS4, Din 1.7225

• EN-19, AISI-4140, SAE4140, 42CrMo4V, 42CrMoS4V, Din 1.7227

What is the Chemical Composition for 42CrMo4 Alloy Steel Bars?

What are the Mechanical Properties of 42CrMo4 Alloy Steel Bars?

We Can Supply The Following 42Crmo4 Steel Products

42CrMo4 Alloy Steel Bars

42CrMo4 Hard Chrome Bars

42CrMo4 Hollow Chrome Bars

42Crmo4 Hydraulic Cylinder Barrels

42CrMo4 Alloy Steel Bars Manufacturers and Suppliers最先出现在Bos-Hyd。

SCM440 cold drawn seamless steel tube is also called CDS tubes (Cold Drawn Seamless Tube). It’s is used widely in machine parts, shafts, bearings, cylinders having strength of 75000 PSD tensile. It is a solid carbon steel rod which is pushed on to the mandrel to form the shape of tube. It is available in different sizes.

SCM440 steel tube has better strength and good comprehensive mechanical properties after heat treatment, and is easier to process under heat treatment. It has excellent quenchability, can be deeply quenched and the temper brittleness tendency is less, widely used in the production of high strength steel fasteners such as engine, pressure vessle, gear, transmission parts, shaft, arm, cold forging parts, screw, etc..

Characteristic:

1. Better tensile strength and percentage of elongation than chromium steels.

2. Combine with Cr and Mo, high hardenability, good resistance to tempered -softening.

3. Good strength and toughness

Applications Of SCM440 cold drawn seamless steel tube

1)       Boiler, Superheater, Heat Exchanger;

2)       Petroleum;

3)       Aerospace;

4)       Chemical;

5)       Electric Power;

6)       Military.

7)      Hydraulic Cylinder Barrel

The Equivalent Standards:

Chemical composition

The Mechanical Properties

SCM440 cold drawn seamless steel tube最先出现在Bos-Hyd。