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Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods

Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods

95.0 INR/Kilograms
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Product Details:

  • Diameter 10 mm to 250 mm or custom
  • Processing Rolled, Forged, Peeled, Heat Treated
  • Technique Hot Rolled, Forged
  • Grade 38XC
  • Standard ASTM, DIN, JIS, EN, GB
  • Material Alloy Steel 38XC
  • Tolerance H9, H11, or as per requirement
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Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Price And Quantity

  • 95.0 INR/Kilograms
  • 1 Kilograms

Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods Product Specifications

  • ASTM, DIN, JIS, EN, GB
  • 38XC
  • Rolled, Forged, Peeled, Heat Treated
  • Hot Rolled, Forged
  • 10 mm to 250 mm or custom
  • H9, H11, or as per requirement
  • Alloy Steel 38XC
  • Construction, manufacturing, engineering components
  • Round Bar, Rod, Bar
  • Random or cut length (as required), typically 3-6 meters
  • Black, Bright, Peeled
  • Automobile parts, machine tools, shafts, fasteners
  • Approx. 7.85 g/cm3
  • Annealed, Normalized, or as per customer request
  • Polished or as rolled
  • Depends on condition, typically 241-280 HB
  • Annealing, Normalizing, Quenching, Tempering
  • Round
  • Bar, Rod, Custom Cut Lengths
  • Contains Carbon and Chromium

Product Description

38XC (also written as 38KhS or 38 in Cyrillic) is a high-strength, chromium-silicon ($text{Cr-Si}$) alloy structural steel designated under the GOST 4543 standard. Thanks to the unique synergy between chromium and high silicon levels, this grade exhibits remarkable fatigue life, exceptional wear resistance, elasticity, and high torsion limits.

It is primarily supplied as hot-rolled or forged round bars, rods, and flats for heavy-duty machinery.

Technical Specifications

1. Chemical Composition (GOST 4543)

The high silicon content ($approx 1.00% - 1.40%$) acts as a solid-solution strengthener, preventing softening during tempering and lending the alloy some characteristics shared with high-performance spring steels.

Element Min (%) Max (%)
Carbon (C) 0.34 0.42
Silicon (Si) 1.00 1.40
Chromium (Cr) 1.30 1.60
Manganese (Mn) 0.30 0.60
Phosphorus (P) 0.035
Sulfur (S) 0.035
Nickel (Ni) 0.30

2. Global Material Equivalents

If you are cross-referencing across international standards to source or substitute this grade, the nearest equivalent materials include:

  • China (GB/T): 38CrSi (A21382)

  • Germany / Europe (DIN, EN): 37HS / 38CrSi

  • Czech Republic (SN): 14 341 (14341)

  • USA (AISI/SAE): No exact direct ASTM match due to the high Si + high Cr combination, but it sits functionally between the 92xx spring series and 51xx/41xx structural series for heavy-duty shaft and gear work.

Mechanical Properties (Typical Heat-Treated State)

When quenched (typically in oil at around $880^circtext{C} - 900^circtext{C}$) and tempered, 38XC yields deep hardenability and uniform cross-sectional strength:

  • Tensile Strength ($R_m$): $ge 930text{ MPa}$

  • Yield Strength ($R_e$): $ge 740text{ MPa}$

  • Elongation ($A_5$): $ge 12%$

  • Reduction of Area ($Z$): $ge 50%$

  • Impact Toughness ($KU_2$): $ge 30text{ J}$

  • Annealed Supply Hardness: $le 255text{ HBW}$

Typical Applications

Because 38XC withstands severe cyclic stresses, high variable loads, and frictional wear, it is standard for components requiring deep core toughness and surface endurance:

  • Power Generation: Turbine fasteners, high-stress studs, and boiler support rods.

  • Automotive & Heavy Machinery: Camshafts, multi-diameter transmission shafts, heavy-duty axles, and connecting rods.

  • Drivetrain Components: Mechanical gears, pinions, clutch plates, and friction discs.

  • Machine Tool Parts: High-wear valve rods, main axes, and spindle drives.

Processing & Fabrication Notes

  Welding Warning: 38XC is categorized as difficult to weld due to its carbon and silicon levels, which elevate the risk of cold cracking.

  • Preheating: If welding or thermal cutting (oxy-acetylene/plasma) is mandatory, the stock must be preheated uniformly to $250^circtext{C} - 350^circtext{C}$ depending on the cross-sectional bar diameter.

  • Post-Heat Treatment: Slow cooling in calm air or insulation blankets following hot work is essential to prevent thermal shock and structural stress cracking.



Exceptional Performance and Adaptability

38XC alloy steel round bars and rods are engineered to deliver consistent mechanical properties in demanding environments. Their high carbon and chromium composition enhances hardness and strength, enabling reliable performance in construction, manufacturing, and machining. Versatile delivery conditions allow these steels to be tailored precisely to your process and performance requirements, making them a preferred choice in numerous industrial sectors.


Customizable Supply and Surface Options

Customers can choose from polished surfaces for improved aesthetics and finish or "as rolled" surfaces for functional industrial use. With custom cut lengths available, 38XC alloy steel products can be supplied to exact specifications, reducing wastage and fabrication time. Annealed or normalized delivery conditions further ensure ease of machining and flexibility during fabrication.

FAQ's of Alloy Steel 38XC Round Bar 38XC Bars 38XC Rods:


Q: How are Alloy Steel 38XC round bars typically used in industry?

A: Alloy Steel 38XC round bars are widely used in manufacturing automotive components, machine parts, shafts, and tools due to their strength and wear resistance. Their adaptability makes them ideal for both structural and mechanical engineering projects.

Q: What process is used to ensure the desired hardness of 38XC round bars?

A: The hardness of 38XC round bars, typically between 241-280 HB, is achieved through controlled heat treatment processes like annealing, normalizing, quenching, and tempering. The specific hardness can be customized based on the delivery condition requested by the customer.

Q: When should I choose a polished surface over an as-rolled surface for 38XC bars?

A: A polished surface is preferable when appearance or corrosion resistance is important, such as in visible components or precision assemblies. As-rolled surfaces are more suited for internal or structural applications where surface aesthetics are less critical.

Q: Where can I source Alloy Steel 38XC bars and rods in India?

A: You can obtain Alloy Steel 38XC round bars and rods from manufacturers, traders, suppliers, dealers, exporters, fabricators, and retailers across India. Many offer custom-cut services and varied delivery conditions to match your specific needs.

Q: What are the benefits of choosing 38XC alloy steel over regular carbon steel?

A: 38XC alloy steel offers enhanced hardness, strength, and wear resistance due to its chromium and carbon alloy content. This makes it suitable for more demanding applications where greater durability and performance are required compared to standard carbon steel.

Q: How do I choose the correct delivery condition for my application?

A: The choice between annealed, normalized, or custom delivery conditions depends on your application's machining requirements and desired mechanical properties. Annealed bars are softer and easier to machine, while normalized or quenched bars offer higher strength and hardness.

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