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Product Overview
Introduction To Engineering Steel 4130 / AISI 4130 Steel
MOKSH TUBES & FITTINGS LLP is a reliable supplier, exporter, importer, and stockist of EN 4130 steel products including pipes, tubes, bars, plates, and fittings.
4130 Alloy Steel, also known as AISI 4130, Chromium-Molybdenum Steel, or Cr-Mo Steel, is a versatile low-alloy steel known for its high strength, toughness, weldability, and fatigue resistance. Its excellent strength-to-weight ratio makes it ideal for aerospace structures, motorsport frames, high-pressure tubing, and critical engineering components.
Whether used in aircraft parts, roll cages, drill pipes, or high-stress mechanical components, 4130 alloy steel delivers consistent performance under load and offers exceptional durability after heat treatment. Its combination of strength, workability, and reliability makes it a preferred choice for OEMs, engineering companies, fabrication units, and industrial manufacturers.
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4340 Alloy Steel Specifications
| Category | Details |
|---|---|
| Grade | AISI 4340 / UNS G43400 / EN 24 / 1.6511 |
| Type | High-Strength Low Alloy Steel (Ni-Cr-Mo Alloy) |
| Typical Chemical Composition | C 0.38–0.43%, Mn 0.60–0.80%, Si 0.15–0.30%, Cr 0.70–0.90%, Ni 1.65–2.00%, Mo 0.20–0.30% |
| Conditions | Annealed, Normalized, Hardened & Tempered, Hot Rolled, Forged |
| Heat Treatment | Quenching & Tempering, Normalizing, Stress Relieving |
| Testing | Tensile, Hardness, Impact, Chemical Analysis, UT (Optional) |
| Certification | EN 10204 3.1 / 3.2 (Mill Test Certificate Available) |
Chemical Composition of 4130 Alloy Steel
| Element | Composition (%) |
|---|---|
| Carbon | 0.28 – 0.33 |
| Manganese | 0.40 – 0.60 |
| Phosphorus | 0.035 |
| Sulfur | 0.040 |
| Chromium | 0.80 – 1.10 |
| Molybdenum | 0.15 – 0.25 |
| Silicon | 0.15 – 0.35 |
Technical Composition
Physical Properties
| Property | Imperial | Metric |
|---|---|---|
| Density | 0.283 lb/in³ | 7.83 g/cm³ |
| Melting Point | 2500 – 2550 °F | 1370 – 1400 °C |
| Modulus of Elasticity(Tension) | 29,000 ksi | 200 GPa |
| Modulus of Elasticity(Torsion) | 11,600 ksi | 80 GPa |
| Poisson's Ratio | 0.29 | - |
| Thermal Conductivity | 42 W/m·K | 42 W/m·K |
| Specific Heat Capacity | 460 J/kg·K | 460 J/kg·K |
Heat Treatment of 1045 Steel
| Heat Treatment Process | Temperature Range | Cooling / Procedure |
|---|---|---|
| Annealing | 790–870°C | slow furnance cool |
| Normalizing | 830–860°C | Air cool |
| Hardening | 800–820°C | Quench in polymer or oil |
| Tempering | 400–650°C | Reheat depending on required hardness |
| Stress Relieving | 540–650°C | Hold for 1–2 hours |
After quenching & tempering, 4130 steel develops exceptional fatigue strength, improved hardness, and enhanced mechanical stability for high-stress engineering applications.
Mechanical Properties
| Property | Annealed | Hot-Finished | Cold Drawn | Hot-rolled | Sheet |
|---|---|---|---|---|---|
| Tensile Strength (ksi / MPa) | 85–105 ksi / 586–724 MPa | 90–115 ksi / 620–793 MPa | 95–130 ksi / 655–896 MPa | 85–110 ksi / 586–758 MPa | 80–105 ksi / 552–724 MPa |
| Yield Strength (0.2%) | 55–70 ksi / 379–483 MPa | 60–95 ksi / 414–655 MPa | 65–105 ksi / 448–724 MPa | 55–80 ksi / 379–552 MPa | 50–75 ksi / 345–517 MPa |
| Elongation (%) | 20–30 | 15–25 | 15–20 | 20–25 | 20–30 |
| Brinell Hardness (3000 kg) | 150–200 | 180–240 | 200–260 | 150–210 | — |
| Rockwell Hardness (B / C) | 80–90 B | 85–95 B | 85–95 B | 80–90 B | 80–90 B |
International Standards & Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | 25CrMo4 / EN 4130 |
| AISI / SAE | 4130 |
| DIN | 1.7218 |
| JIS | SCM430 |
| GB | 30CrMo |
Products in Engineering Steel 4130
Engineering Steel 4130 is typically available in:
✔
Seamless Pipes
✔
Welded Pipes (ERW & EFW)
✔
Tubes (Capillary, U-Bend)
✔
Sheets & Plates
✔
Coils & Strips
✔
Round Bars, Flat Bars, Hex Bars, Square Bars
✔
Pipe Fittings (Elbows, Tees, Reducers, Caps, Stub Ends)
✔
Flanges (Weld Neck, Slip-On, Blind, Socket Weld, Threaded)
✔
Fasteners (Bolts, Nuts, Screws, Washers, Studs)
✔
Custom Fabricated Components
Engineering Steel 4130 products are produced to the following global standards:
Uses and Advantages
Excellent strength-to-weight ratio
Good weldability and machinability
High fatigue resistance and toughness
meCan be heat-treated for enhanced mechanical properties
Applications of Engineering Steel 4130
Engineering Steel 4130 is widely used in:
Aerospace & Aviation
Aircraft structural components, engine mounts, and landing gear parts.
Automotive & Motorsport
Roll cages, chassis & suspension parts, Drive shafts and Racing frames.
Oil & Gas Industry
High-pressure tubing, Drill pipes, Downhole eruipment
Engineering & Fabrication
Fasteners, High-stress machine components, gears and shafts.
Uses and Advantages
High strength-to-weight ratio ideal for structural applications
Excellent machinability and weldability
Outstanding fatigue resistance
Heat treatable for superior mechanical performance
Reliable for aerospace, motorsport, and oilfield operations
WHY CHOOSE US?
4130 Steel Price per kg in India
Typical Price Range: ₹150 – ₹280 per kg (Varies by size, wall thickness, and heat-treatment condition).
Contact us for exact quotation based on size and quantity.
FAQ's
What is EN 4130 steel and why is it widely used?
EN 4130, also known as AISI 4130, is a low-alloy steel containing chromium and molybdenum, which provide excellent strength, toughness, and weldability. It is valued for its high strength-to-weight ratio and fatigue resistance, making it suitable for demanding structural and mechanical applications. Due to its ability to be heat-treated for enhanced mechanical properties, EN 4130 is extensively used in aerospace, automotive, and oil & gas industries.
What are the chemical and mechanical properties of EN 4130 steel?
EN 4130 steel has a chemical composition that includes carbon (0.28–0.33%), manganese (0.40–0.60%), chromium (0.80–1.10%), and molybdenum (0.15–0.25%), along with small amounts of silicon, phosphorus, and sulfur. Mechanically, it offers tensile strength between 552–896 MPa and yield strength between 345–724 MPa, depending on the product form and heat treatment. With elongation up to 30% and hardness ranging from 150–260 Brinell, EN 4130 is strong, ductile, and highly versatile.
What EN 4130 steel products are offered by MOKSH TUBES & FITTINGS LLP?
MOKSH TUBES & FITTINGS LLP supplies a complete range of EN 4130 steel products including seamless and welded pipes, tubes, sheets, plates, coils, strips, bars, pipe fittings, flanges, fasteners, and custom-fabricated components. All products are manufactured to international standards and can be customized in terms of dimensions, thickness, and heat treatment to meet specific industry requirements.
What are the key applications of EN 4130 steel?
EN 4130 steel is widely used in aerospace and aviation for manufacturing aircraft components, engine mounts, and landing gear parts. In the automotive and motorsport industry, it is used for roll cages, chassis, drive shafts, and suspension parts that require strength and fatigue resistance. It is also extensively used in the oil & gas industry for pipelines, high-pressure tubing, and equipment exposed to extreme environments, as well as in mechanical engineering for gears, bolts, and machinery components.
Why choose MOKSH TUBES & FITTINGS LLP for EN 4130 steel materials?
MOKSH TUBES & FITTINGS LLP is a trusted supplier of high-quality EN 4130 steel products with a wide inventory and the ability to provide customized solutions. The company has strong expertise in alloy steel manufacturing and ensures compliance with international standards. With global supply capabilities, timely deliveries, competitive pricing, and dedicated customer support, MOKSH TUBES & FITTINGS LLP is a reliable partner for industries requiring durable and high-performance EN 4130 steel materials.
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For inquiries or quotations on EN 4130 steel products, contact Moksh Tubes & Fittings LLP — your reliable partner for chromium-molybdenum alloy steels.
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