Alloy Steel 16MnCr5 Round Bar

Name: Alloy Steel 16MnCr5 Round Bar
Brand: JAYANT IMPEX
Price: 70.0 INR
Availability: InStock

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Product Details:

Technique Hot Rolled
Processing Forged, Peeled, Turned, Polished
Tolerance h11
Length 5 to 6 Meters
Application Automobile Industry, Engineering Industry, Gears, Shafts, Transmission Components
Material Alloy Steel 16MnCr5
Finish Bright
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Alloy Steel 16MnCr5 Round Bar Price And Quantity

Minimum Order Quantity 1 Kilograms
Price 70.0 INR/Kilograms

Alloy Steel 16MnCr5 Round Bar Product Specifications

Diameter 20mm to 200mm
Grade 16MnCr5
Standard DIN 17210 / EN 10084
Type Round Bar
Specific Use Case Hardening Steel
Technique Hot Rolled
Processing Forged, Peeled, Turned, Polished
Length 5 to 6 Meters
Tolerance h11
Finish Bright
Application Automobile Industry, Engineering Industry, Gears, Shafts, Transmission Components
Material Alloy Steel 16MnCr5

Delivery Condition Annealed or as Rolled
Packaging Standard Export Seaworthy Packing
Yield Strength min 470 MPa
Hardness Max 241 HB
Heat Treatment Carburized, Quenched and Tempered
Tensile Strength 800 - 1100 MPa
Shape Round
Surface Treatment Polished, Rough Machined
Stock Availability Ready Stock Available
Elongation min 9%

Product Description

16MnCr5 (Material Number: 1.7131) is arguably the most widely specified case-hardening (carburizing) alloy steel in Europe for low-to-medium stress components.

It sits right between the cost-effective 17Cr3 and the heavier-duty 20MnCr5. By balancing a low carbon content ( $0.16%$ ) with a robust combination of manganese and chromium, it provides an exceptional blend of core toughness, excellent machinability, and a glass-hard, wear-resistant surface after case hardening.

Here is the complete technical layout for 16MnCr5 alloy round bars, bars, and rods:

Chemical Composition (%)

The deliberate pairing of Manganese and Chromium ensures good hardenability and deep carbon penetration during the carburizing cycle.

Element	Min (%)	Max (%)
Carbon (C)	0.14	0.19
Manganese (Mn)	1.00	1.30
Chromium (Cr)	0.80	1.10
Silicon (Si)		0.40
Phosphorus (P)		0.025
Sulfur (S)		0.035 *

* Procurement Tip: For high-volume automated CNC turning, always look for the free-machining variant 16MnCrS5 (Material 1.7139). It features a controlled sulfur range of 0.020% to 0.040% which breaks up chips beautifully and drastically extends tool life.

International Cross-Reference & Equivalents

16MnCr5 is universally recognized across global supply chains under these regional equivalents:

EN / DIN Standard: 16MnCr5 / 1.6MnCrS5 (EN 10084)
SAE / AISI (USA): AISI 5115 / AISI 5117 (Closest chemistry matches)
JIS (Japan): SMnC420 / SMnC420H
AFNOR (France): 16MC5
UNI (Italy): 16MnCr5

Mechanical Properties (Typical Core Values after Case Hardening)

Once machined, carburized, quenched, and low-temperature tempered, a 16MnCr5 round bar yields a resilient core paired with an intensely hard outer casing:

Core Tensile Strength ( $R_m$ ): $800 - 1100 text{ MPa}$ (Highly dependent on bar diameter)
Core Yield Strength ( $R_e$ ): $ge 550 - 650 text{ MPa}$
Elongation ( $A_5$ ): $ge 10%$
Impact Energy ( $KV$ ): $ge 41 text{ J}$
Typical Surface Hardness: 5963 HRC (Rockwell C), offering excellent resistance to adhesive wear, scuffing, and contact fatigue.

Typical Applications

Because it limits dimensional distortion during heat treatment while ensuring high surface durability, 16MnCr5 is a staple grade for rotating and sliding mechanism components:

Automotive & Powertrain: Small-to-medium transmission gears, splined shafts, selector forks, steering worms, and pinion shafts.
Precision Engineering: Piston pins, high-load bushings, cam tracks, guide pillars, and link pins.
Clamping Hardware: Heavy-duty mechanical toggle links, collet chuck bodies, and indexing pins.

Delivery Conditions & Heat Treatment Parameters

Available Finishes: Hot-rolled black bar, peeled/turned bright bar, and highly precise centerless ground rods.
Machining State (+TH / +FP): 16MnCr5 round bars are regularly delivered treated to a specific hardness structure (typically 140187 HB). This deliberate thermal treatment prevents the material from being too gummy during drilling or gear-hobbing.
Heat Treatment Flow:
- Carburizing: Typically performed at $880^circtext{C} - 980^circtext{C}$ in a carbon-rich gas atmosphere.
- Core Hardening: $860^circtext{C} - 900^circtext{C}$ (frequently bypassed via direct quenching from carburizing temperature to minimize distortion).
- Case Hardening: $780^circtext{C} - 820^circtext{C}$ followed by an oil or polymer quench.
- Tempering: Mandatory low-temperature soak at $150^circtext{C} - 200^circtext{C}$ for a minimum of 2 hours to stabilize the microstructure.

Precision in Performance and Quality

The Alloy Steel 16MnCr5 Round Bar delivers exceptional mechanical properties and surface finish for a variety of industrial applications. Expertly forged, peeled, turned, and polished, each bar is crafted to meet stringent international standards like DIN 17210 and EN 10084. Its bright, smooth finish and reliable hardness make it a preferred choice for use in the fabrication of critical gears, shafts, and transmission components.

Industry-Focused Applications

Designed for use in the automobile and engineering sectors, the 16MnCr5 Round Bar excels in environments that require high wear resistance and consistent performance. It is suited for precision case hardening, which enhances surface hardness while maintaining a tough core, ensuring longevity in gears and shafts. The bar's dimensional tolerance (h11) and availability in varied diameters offer flexibility for custom engineering needs.

FAQ's of Alloy Steel 16MnCr5 Round Bar:

Q: How is Alloy Steel 16MnCr5 Round Bar typically processed before delivery?

A: The round bar is processed using forging, peeling, turning, and polishing techniques. It is then heat treated through carburizing, quenching, and tempering to achieve the required mechanical properties and surface finish, making it suitable for demanding applications.

Q: What are the main benefits of using 16MnCr5 Round Bar in automotive and engineering industries?

A: This alloy steel provides excellent case hardenability, high tensile strength (800-1100 MPa), and good elongation (min 9%). These properties result in enhanced wear resistance and durability-ideal for gears, shafts, and transmission parts subjected to heavy loads and repeated stresses.

Q: When should I choose the annealed over the as-rolled delivery condition?

A: Choose the annealed condition when you require improved machinability, as annealing softens the steel for easier cutting and forming. The as-rolled condition is more suitable for applications needing higher initial strength and hardness without additional heat treatment.

Q: Where can Alloy Steel 16MnCr5 Round Bars be sourced in India?

A: These round bars are readily available from dealers, exporters, fabricators, manufacturers, producers, retailers, suppliers, and traders throughout India, often from stock for immediate dispatch, ensuring fast delivery for urgent projects.

Q: What is the typical usage process for 16MnCr5 Round Bars in case hardening applications?

A: The bar is first shaped and rough machined, followed by carburizing to enrich the surface with carbon. After quenching and tempering, the result is a hard, wear-resistant outer layer with a tough, ductile core-ideal for components like gears and shafts.

Q: How does the specified hardness and strength of 16MnCr5 Round Bar affect its suitability for engineering components?

A: With a maximum hardness of 241 HB and yield strength of at least 470 MPa, the round bar ensures good resistance to deformation and wear, making it particularly suitable for applications where both toughness and surface hardness are critical requirements.

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