ASTM B361 Nickel Silver Steel

special steel 18CrMo4/1.7243 Alloy Steel optimal manufacturer

According to industry experts, 18CrMo4/1.7243 Alloy Steel stands out for its excellent combination of strength, toughness, and hardenability. Its versatility and reliability make it a preferred choice for critical components in automotive, machinery, and manufacturing applications worldwide. With proper heat treatment and machining processes, 18CrMo4/1.7243 Alloy Steel can deliver optimal performance and durability in demanding operating conditions.


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Table of Contents

Unveiling the Marvels of 18CrMo4/1.7243 Alloy Steel: A Comprehensive Exploration


In the vast landscape of metallurgy, certain alloys stand out as shining examples of innovation and engineering excellence. One such marvel is 18CrMo4/1.7243 Alloy Steel, renowned for its exceptional strength, toughness, and versatility. Join us as we embark on a journey to uncover the intricacies and advantages of this remarkable alloy, delving into its composition, properties, applications, suppliers, pricing, and expert insights.

Overview of 18CrMo4/1.7243 Alloy Steel

18CrMo4/1.7243 Alloy Steel belongs to the family of chromium-molybdenum steels, characterized by their high strength, toughness, and wear resistance. Let’s dive into the key details of this alloy:

Chemical Composition

Carbon (C)0.15-0.21%
Silicon (Si)0.40% max
Manganese (Mn)0.60-0.90%
Phosphorus (P)≤ 0.035%
Sulfur (S)≤ 0.035%
Chromium (Cr)0.90-1.20%
Molybdenum (Mo)0.15-0.30%

Mechanical Properties

  • Tensile Strength: 780-930 MPa
  • Yield Strength: 580-720 MPa
  • Elongation: ≥ 14%
  • Hardness (Brinell): 197-235 HB


  • EN 10083-3: Technical delivery conditions for alloy steels
  • DIN 17200: Heat-treatable steels – Technical delivery conditions for steels for quenching and tempering

Exploring the Features and Advantages

18CrMo4/1.7243 Alloy Steel boasts a plethora of features and advantages that make it a preferred choice in various applications:


  • High strength with good ductility and toughness
  • Excellent hardenability and wear resistance
  • Good machinability and weldability
  • Resistant to thermal fatigue and cracking
  • Uniform hardness distribution after heat treatment


  • Ideal for gears, crankshafts, and other heavily stressed components
  • Offers reliable performance in elevated temperature environments
  • Provides excellent resistance to abrasion and impact loading
  • Suitable for induction hardening and surface coating processes
  • Ensures consistent mechanical properties for critical applications

Comparison Between 18CrMo4/1.7243 Alloy Steel and Competing Alloys

Let’s compare the advantages and disadvantages of 18CrMo4/1.7243 Alloy Steel with a competing alloy, 20CrMo5/1.7264 Alloy Steel:

Parameter18CrMo4/1.7243 Alloy Steel20CrMo5/1.7264 Alloy Steel
Carbon Content0.15-0.21%0.17-0.23%
Silicon Content0.40% max0.15-0.35%
Manganese Content0.60-0.90%0.40-0.70%
Chromium Content0.90-1.20%0.70-1.00%
Molybdenum Content0.15-0.30%0.15-0.30%
Tensile StrengthModerateModerate

Applications and Uses

From automotive to machinery, 18CrMo4/1.7243 Alloy Steel finds widespread application across diverse industries:

AutomotiveGears, crankshafts, connecting rods
MachineryShafts, axles, gears, spindles
ManufacturingTool holders, die blocks, mold bases

Navigating Suppliers and Pricing

Sourcing 18CrMo4/1.7243 Alloy Steel requires careful consideration of reliable suppliers offering quality products at competitive prices:

SupplierPrice Range (per kg)Description/Notes
Thyssenkrupp$2.80 – $4.50Leading global supplier of specialty steel, offering high-quality alloy steel products.
Voestalpine$2.60 – $4.20Renowned manufacturer of high-performance steel solutions for various industrial sectors.
ArcelorMittal$2.50 – $4.00Global steel giant providing a wide range of alloy steel products with global distribution.

FAQs about 18CrMo4/1.7243 Alloy Steel

Q: How is 18CrMo4/1.7243 Alloy Steel produced?
A: This alloy steel is typically produced through processes such as electric arc furnace melting, refining, and continuous casting, followed by hot rolling and heat treatment.

Q: What are the main advantages of using 18CrMo4/1.7243 Alloy Steel?
A: 18CrMo4/1.7243 Alloy Steel offers high strength, good toughness, and excellent hardenability, making it suitable for a wide range of demanding applications.

Q: What are the common applications of 18CrMo4/1.7243 Alloy Steel?
A: This alloy steel is commonly used in gears, crankshafts, shafts, axles, and other components subjected to high surface pressures and wear.

Q: Where can I buy 18CrMo4/1.7243 Alloy Steel?
A: You can source it from reputable suppliers such as Thyssenkrupp, Voestalpine, ArcelorMittal, and others.

Q: What specifications does 18CrMo4/1.7243 Alloy Steel conform to?
A: This alloy steel conforms to standards such as EN 10083-3, DIN 17200, and other industry-specific specifications, ensuring compliance with stringent quality requirements.

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