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Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block
Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block

Hot Die Forging AISI 4140 Forged Steel Block 42CrMo Forging Block

Product Name: AISI 4140 forged steel block, 42CrMo forging block, AISI 4130 forging block

Heigh: Max 1200mm

Length: 1200mm

Weight: 15Tons

Material: AISI4340, AISI4140, 42CrMo S45C, 100CR6, 34CRNIMO6, 316l, 304l, F22, F65, 4130, 4140, 4145, 4340, 8630; F51, 17-4PH, F55, F53, 904L, F44; monel 400, hastelloy C22, hastelloy c276....

Processing: Forging/casting- rough machining, heat treatment, finish machining,inspect

Application: Mainly suitable for cranes, mechanical parts...

Lengthmax. 6.000 mm
Widthmax. 1.800 mm
Thicknessmax. 1.000 mm (in case of smaller thickness greater length and width)
Weightmax. 30.000 kg


AISI 4140 / 42CrMo Information

42 CrMo steel belongs to ultra-high strength steel, with high strength and toughness, good quenability, no obvious tempering brittleness, high fatigue limit and multiple impact resistance after quality treatment, and good low temperature shock toughness.

Chemical Composition


Mechanical Property

Tensile strengthσb (MPa)Yield strengthσs (MPa)Elongation δ5 (%)Reduction of area ψ(%)Ballistic workAkv (J)Notched bar impact strength αkv (J/cm2)Hardness

The 42CrMo Forging Block or AISI 4140 forged steel block is a premium-grade industrial component meticulously designed to deliver exceptional performance and durability. Crafted from high-quality 42CrMo alloy steel, this forging block offers unparalleled strength, toughness, and wear resistance, making it a superior choice for demanding applications across diverse industries.



Nickel Forging Alloys:

Monel 400 (UNS N04400/W.Nr.2.4360); Monel K500 (UNS N05500/W.Nr.2.4375), Monel R405 (UNS N04405)

Inconel 718 (UNS N07718/W.Nr.2.4668); Inconel X-750 (UNS N07750/W.Nr.2.4669); Inconel 690 (UNS N06690/W.Nr.2.4642); Inconel 625 (UNS N06625/W.Nr.2.4856); Inconel 600 (UNS N06600/W.Nr.2.4816); Inconel 601 (UNS N06601/W.Nr.2.4851);

Hastelloy B (UNS N10001); Hastelloy C276 (UNS N10276/W.Nr.2.4819); Hastelloy C (NS333); Hastelloy C22 (UNS N06022/W.Nr.2.4602)

Incoloy 926 (UNS N08926/W.Nr.1.4529); Incoloy 800HT (UNS N08811/W.Nr.1.4959); Incoloy 825 (UNS N08825/W.Nr.2.4858); GH4169(Inconel 718)

Stainless Steel Forging Alloys:

F51(UNS S31803 W.Nr1.4462); 17-4PH(UNS S17400 SUS630 W.Nr1.4542); F55(UNS 32760 W.Nr1.4501); F53(UNS 32750 W.Nr1.4410 2205); 904L(UNS N08904 W.Nr1.4539); F44(UNS S31254 254SMo W.Nr1.4547)

Carbon Alloy Special Steels:

F22, F65, 4130(UNS G41300, 30CrMo), 4140(UNS G41400, 42CrMo, 42CrMo4) , 4145(UNS G41500, 50CrMo4, 1.7228), 4340(UNS G43400, 36CrNiMo4, 40NCD3, 40CrNi2MoA), 8630(UNS G86300)


Key Features

Premium Alloy: Forged from 42CrMo alloy steel OR AISI 4140 alloy, renowned for its outstanding mechanical properties, corrosion resistance, and heat stability.

Precision Forging: The block is manufactured using advanced precision forging techniques, ensuring consistent dimensions and structural integrity.

Optimized Heat Treatment: Subjected to a specialized heat treatment process to achieve optimal hardness and toughness, enhancing overall performance.

Precision Machining: Each block undergoes precise machining to meet strict tolerances, ensuring seamless integration into your machinery.

Versatile Design: The block's design allows for compatibility with a wide range of equipment and systems.

Processing Service

Machining: Turning / Milling / Planing / Drilling / Boring / Grinding / Gear Cutting / CNC Machining

Deformation processing: Bending / Cutting / Rolling / Stamping



Exceptional Strength: The use of 42CrMo alloy steel provides exceptional strength and load-bearing capacity, even under rigorous operational conditions.

Enhanced Durability: The advanced heat treatment process and precision forging contribute to the block's extended service life, minimizing downtime and replacement costs.

Reduced Maintenance: Its inherent wear resistance properties result in reduced maintenance needs, saving valuable time and resources.

Optimized Performance: Precision machining and meticulous engineering ensure consistent and reliable performance in critical applications.

Cost-Effective: Longevity and reliability translate to a cost-effective solution for your industrial requirements.



The 42CrMo Forging Block finds versatile application in a range of industries, including:

Heavy Machinery: Ideal for heavy-duty equipment such as construction machinery, cranes, and loaders.

Oil and Gas: Suitable for use in drilling equipment, pumps, and oil extraction machinery.

Manufacturing: Essential for various manufacturing processes and machinery components.

Transportation: Utilized in aerospace, automotive, and marine applications.

Renewable Energy: Applied in wind turbines, hydropower systems, and other renewable energy equipment.

Testing Machine

Jetvision have a certified quality management system which complies with the requirements of ISO 9001. This quality system encompasses every phase of our business. And we have kinds of testing machine to test our forging ring. That we offer top quality products.


Hunan Jetvision Industrial Co.,LTD is a professional production of forging flanges, forgings rings, forged shaft, forged bar, customized forgings, etc. , products are widely used in mechanical equipment, new energy equipment, petrochemical pressure vessel equipment, aerospace and military special equipment and other fields.

Our company has strong technical strength and fully implements lean production management, It is equipped with a full set of production lines integrating forging processing, heat treatment, machining and performance testing.The material covers alloy steel, stainless steel, aluminum alloy, titanium alloy and superalloy and other difficult deformation materials.

Forging Line:


After sales Service

Our commitment to your satisfaction extends beyond the point of purchase. We offer comprehensive after-sales support, including:

Technical Expertise: Expert guidance for proper installation and usage.

Warranty Coverage: Backed by a warranty to ensure the quality and performance of the product.

Replacement and Repair: Hassle-free replacement or repair in case of any manufacturing defects.

Frequently Asked Questions (FAQ)

Q1: What is the composition of 42CrMo alloy steel?

A1: 42CrMo alloy steel is composed of elements that provide remarkable mechanical and corrosion-resistant properties.

Q2: Can this forging block withstand heavy loads?

A2: Absolutely, the use of 42CrMo alloy steel ensures exceptional load-bearing capacity, making it suitable for heavy-duty applications.

Q3: Is the block compatible with various machinery brands?

A3: Yes, the versatile design allows for seamless compatibility with a wide range of equipment and systems.

Q4: What is the duration of the warranty period?

A4: The 42CrMo Forging Block is covered by a warranty to guarantee its quality and performance.

Q5: Is technical assistance provided during installation?

A5: Yes, we offer expert technical guidance to ensure proper installation and usage.

What is a forged block?

Forged alloy steel blocks are created through a manufacturing method that utilizes localized compressive force shaping processes. The process begins when steel blocks are compressed within a die and custom shaped to exact project specifications.

Is forging stronger than casting?

Forged steel is generally stronger and more reliable than castings and plate steel due to the fact that the grain flows of the steel are altered, conforming to the shape of the part. The advantages of forging include: Generally tougher than alternatives.

Can an engine block be forged?

Billet aluminum engine blocks are made from a different 6061 “aerospace” alloy that is more ductile than A356 or A357, and is highly resistant to cracking under extreme pressure. The 6061 alloy in forged billet blocks is often pressure treated to decrease porosity and increase density.

What is the difference between cast and forged?

The difference between casting and forging comes down to the shaping process. Casting reduces metals to a molten form while forging shapes the metal workpiece while in a solid state.

What is the process of block forging?

Closed Die Block Forging

Places a block of metal into a mold-like metal die which completely surrounds the block. This die is attached to an anvil and then the hot metal is hammered in quick, repeated strikes, causing the metal flow into the die and assume the shape of it.

Is a forged engine good?

We take a look at the difference between forged and cast pistons, and why forged parts are stronger and more reliable. Strong and reliable engine parts can make more of a difference than some of us realize for racers, riders, drivers, and mechanics alike.

What is a forging block?

The forging block is generally used to shape and press the material being processed in a forge. Regardless of wheter heavy metal or filigree material such as gold is forges, forging blocks are used.

What is a blocker impression in a forging sequence?

BLOCKER (BLOCKING IMPRESSION). The impression in the dies (often one of a series of impressions in a single die set) which imparts to the forging an intermediate shape, preparatory to forging of the final shape.

Is forging stronger than welding?

Forgings are stronger.

Welded structures are not usually free of porosity. Any strength benefit gained from welding or fastening standard rolled products can be lost by poor welding or joining practice. The grain orientation achieved in forging makes stronger parts.

What are the three types of forging presses?

Different Types of Forging Machines and Process

The three main types of forging presses used for press forging are listed below:

Mechanical Press–converts the rotation of the motor into linear motion of the ram.

Hydraulic Press–hydraulic motion of the piston moves the ram.

Screw press–screw mechanism actuates the ram movement.

What are the two important terms related to forging?

Impact velocity—The relative velocity of the forging dies just prior to impact. Impression—A cavity, or series of cavities (multiple), machined into a forging die to produce a desired configuration in the workpiece during forging.

Other Forgings are Available

Hunan Jetvision Industrial Co.Ltd is a professional supplier&manufacturer which offer kinds of alloy and stainless steel forging, such as forging ring, shaft forging, forged cylinder, forged discs, forged hollow, forging block, forged round bar, etc, with top quality and low factory price.

SIZE/ WEIGHTCarbon, Alloy & ToolStainlessAluminumTitanium
FLAT BAR/BLOCKSMAX. WIDTH120”120”27”60”65”
MAX. WEIGHT60,000#60,000#15,000#10,000#15,000#
MAX. LENGTH108”108”65”96”65”
DISCS/HUBSMAX. DIA.96”96”50”80”65”
MAX. WEIGHT75,000#75,000#20,000#15,000#10,000#
MAX. LENGTH65”65”40”65”65”
ROUNDS/SHAFTS (with steps or flanges)MAX. LENGTH420”220”144”220”144”
MAX. WEIGHT75,000#75,000#20,000#10,000#10,000#


Material are avalible:

Stainless Steel: ASTM A182、F304/304L、 F316/316L、 F316H、F310、 F321、JB4728-2000 、OCR18Ni10Ti、JB4728-2000、OCR17NI12Mo2、2205、2507、2103、904L、254SMD、304LN、316LN、1CR13、2cr13、3cr13、4cr13、321、302、W1813N、W2014N、W2018N、W2020N、P550、Cr18Mn18N、06Cr19Ni10(S30408)、022Cr19Ni10(S30403)、06Cr17Ni12Mo2(S31608)、022Cr17Ni12Mo2(S31603)、06Cr25Ni20(S31008)、06Cr18Ni11Ti(S32168)、022Cr19Ni13Mo(S31703)、0Cr17Ni4Cu4Nb、06Cr19Ni10N、14Cr17Ni2、13Cr13Mo、06Cr13, etc stainless steel forgings.

Alloy Steel: 40Cr、15CrMo、20CrMo、25CrMo、30CrMo、35CrMo、35CrMoV、42CrMo、20Cr2Ni4、20CrNiMo、40CrNiMo、30Cr2Ni2Mo、35CrMoV、12Cr1MoV、38CrMoAl、18Cr2Nio4W、40CrNi2Mo、30CrMnSi、25Cr2MoV、17Cr2Ni2Mo、20MnMo、20MnMoNb、34CrNi3Mo、20CrMnTi、40CrMnMo、30Cr2Ni2Mo、34CrMo1、20CrMnMo、24CrMoV、30Cr2MoV、34CrNi1Mo、17Cr2Ni2Mo、34CrNi3MoV、20CrMnTi、A182F1、F5、F9、F11、F22、12Cr2Mo1、10Cr9Mo1VNbN(F91)、10Cr9MoW2VNbBN(F92)、12CrMoV、4140、4340、4330、4130、4150、9CR2MO、17NiCrMo6-4、18CrNiMo7-6、30CrNiMo8、34CRNIMO、34CrNiMo6、36CrNiMo4、34CrNi3Mo、40CRNIMO、40CrNiMoA、50CrMo4、Q345D、300M、17-4PH、PH13-8Mo、15-5PH、AerMet100, etc alloy steel forgings.


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