EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods

EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods

Name: EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods
Brand: JAYANT IMPEX
Price: 65.0 INR
Availability: InStock

65.0 INR/Kilograms

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Product Details:

Specific Use Shaft making, Transmission gears, Pinions, Automotive components
Processing Forged, Rolled, Peeled, Ground
Length 1000mm to 6000mm, or as required
Grade 20MnCr5
Application Engineering, Automobile, Construction, Gear components
Standard DIN, UNI, ISO
Finish Bright, Black, Peeled, Turned, Polished
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EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods Price And Quantity

Price 65.0 INR/Kilograms
Minimum Order Quantity 1 Kilograms

EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods Product Specifications

Material Alloy Steel (20MnCr5)
Tolerance h9, h11 or as required
Diameter 10mm to 300mm
Technique Hot Rolled, Cold Drawn
Type Bar, Round bar, Rod
Application Engineering, Automobile, Construction, Gear components
Finish Bright, Black, Peeled, Turned, Polished
Standard DIN, UNI, ISO
Specific Use Shaft making, Transmission gears, Pinions, Automotive components
Processing Forged, Rolled, Peeled, Ground
Length 1000mm to 6000mm, or as required
Grade 20MnCr5

Forging Ratio Min. 4:1
Delivery Condition Annealed / Rolled / Peeled / Polished
Shape Round, Square, Hex
Testing Ultrasonic Tested, Chemical & Mechanical Analysis
Hardness Max 229 HB (Annealed)
Heat Treatment Case Hardening, Carburizing possible
Surface Condition Annealed, Spheroidized, Pickled, or Raw
MOQ As per agreement or stock availability

Product Description

Whether specified under European (EN / DIN), Italian (UNI), or international (ISO 683-11) standards, 20MnCr5 is identical in chemical composition and mechanical purpose. It represents the global benchmark for a heavy-duty, chromium-manganese case-hardening (carburizing) steel.

Because you are looking at this material through the lens of international standardization bodies (EN, DIN, UNI, ISO), here is an industrial-grade breakdown of the harmonized procurement specifications, structural tolerances, and heat-treatment profiles for 20MnCr5 round bars and rods.

The Unified Standard: ISO 683-11 / EN 10084

Under modern international harmonization, the technical delivery conditions for 20MnCr5 are standardized across Europe and the ISO network.

When ordering, you will frequently see suffixes added to the name to specify the exact heat-treatment or design state of the round bar:

20MnCr5 +AR: As rolled (no special thermal treatment after rolling).
20MnCr5 +A: Soft annealed (maximum soft structure for easy machining).
20MnCr5 +FP: Treated to a ferrite-pearlite structure (the absolute "sweet spot" hardness for high-speed gear hobbing and automated CNC turning).
20MnCrS5: The controlled sulfur variant (Sulfur: $0.020% - 0.040%$ ). If you are doing high-volume machining, specifying the "S" variant is highly recommended to ensure clean chip breakage and extended tool life.

Harmonized Chemical Composition (%)

Element	Min (%)	Max (%)
Carbon (C)	0.17	0.22
Manganese (Mn)	1.10	1.40
Chromium (Cr)	1.00	1.30
Silicon (Si)		0.40
Phosphorus (P)		0.025 (Max)
Sulfur (S)	0.015	0.035 (Standard range)

Why Global Standards Favor 20MnCr5

The interplay between 1.20% Manganese and 1.15% Chromium gives this grade distinct advantages over lower-alloy carburizing steels like 16MnCr5 or 17Cr3:

Deeper Case Depth: It accepts a deeper carbon case profile during gas carburizing, making it highly effective for components with larger cross-sections.
Superior Core Strength: The core retains a high tensile strength ( $1000 - 1300text{ MPa}$ ) even after quenching, meaning the underlying material won't deflect or collapse under heavy shock loads.
High Fatigue Limits: Excellent resistance to rotational bending fatigue makes it perfect for dynamic powertrain components.

Typical Applications across EN/ISO Specifications

Automotive & Heavy Truck Powertrains: High-torque transmission gears, synchronizer hubs, drive pinions, crown wheels, and differential shafts.
Heavy Industry & Clamping: Heavy-duty double-bolted mechanical clamps, automated chuck jaws, splined power-take-off (PTO) shafts, and kingpins.
Earthmoving & Agricultural Machinery: Track rollers, high-wear bushings, and rotary actuator components.

Typical Bar Formats & Dimensional Tolerances

Depending on your downstream manufacturing equipment, 20MnCr5 round bars are supplied to distinct dimensional standards:

Bar Process Type	Surface Finish	Typical Diameter Tolerance	Best Used For
Hot-Rolled Bar	Black Oxide Scale	EN 10060 (Typically class Normal)	Closed-die forging or heavy rough milling/turning.
Peeled & Turned	Bright / Smooth	ISO h11 or h12	Standard CNC lathe machining; minimal outer-diameter clean-up required.
Cold-Drawn / Ground	Highly Polished / Mirror	ISO h9 or h8	High-precision automated Swiss-turning or direct use as linear guide pin

Versatile Surface and Processing Options

Choose from a range of surface conditions-annealed, spheroidized, pickled, or raw-to match application requirements. EUEN 20MnCr5 bars come processed via forging, rolling, peeling, or grinding, ensuring optimal properties for mechanical and engineering uses. Multiple finish options, including bright and polished, further support customization for varied industry needs.

Precision Engineering for Critical Applications

These 20MnCr5 alloy steel bars meet stringent hardening and finishing criteria, suitable for case hardening and carburizing. With a forging ratio of at least 4:1 and adherence to strict tolerance classes (h9, h11), they are tailored for applications in transmission shafts, automotive components, and gear manufacturing.

FAQ's of EUEN DIN UNI 20MnCr5 Bar ISO 20MnCr5 Round Bars 20MnCr5 Rods:

Q: How are EUEN DIN UNI 20MnCr5 Bars typically processed to meet quality standards?

A: EUEN 20MnCr5 bars undergo hot rolling, cold drawing, forging, peeling, or grinding to achieve desired dimensions and properties. They are delivered in conditions such as annealed, spheroidized, rolled, peeled, or polished, with ultrasonic testing and thorough chemical and mechanical analysis to ensure quality.

Q: What applications are suitable for 20MnCr5 bars and rods?

A: These bars and rods are widely used in engineering, automobile, and construction sectors for making transmission shafts, gears, pinions, and automotive components due to their high strength, case hardenability, and versatility in finishing options.

Q: When is case hardening or carburizing recommended for 20MnCr5 alloy steel?

A: Case hardening or carburizing is recommended when enhanced surface hardness and core toughness are needed, such as for gear components and pinions. EUEN 20MnCr5 bars are engineered for these heat treatments, making them ideal for wear-resistant parts.

Q: Where can I source EUEN 20MnCr5 round bars and rods in India?

A: You can obtain these products through authorized dealers, exporters, manufacturers, fabricators, suppliers, and retailers across India. Availability may depend on stock or agreement, with customizable sizes and finishes.

Q: What benefits do the ultrasonic tested EUEN 20MnCr5 bars provide in engineering projects?

A: Ultrasonic-tested bars ensure internal soundness, reducing the risk of subsurface flaws. This guarantees enhanced reliability and safety for critical applications like automotive parts and engineering structures, minimizing the chances of component failure.

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