GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods

GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods

Name: GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods
Brand: JAYANT IMPEX
Price: 255.0 INR
Availability: InStock

255.0 INR/Kilograms

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Product Details:

Length Custom Lengths Available
Tolerance H9-H13 or as required
Finish Bright, Black, Rough
Technique Hot Rolled
Specific Use Shafts, Gears, Fasteners, Pinions, Valves, Machinery Parts
Application Engineering, Auto Parts, Construction, Machinery, General Industrial uses
Processing Forged, Rolled, Peeled
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GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods Price And Quantity

Minimum Order Quantity 1 Kilograms
Price 255.0 INR/Kilograms

GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods Product Specifications

Grade 18KHG
Material GOST 18KHG Alloy Steel
Diameter 16mm - 350mm
Standard GOST
Type Round Bar / Rod
Processing Forged, Rolled, Peeled
Application Engineering, Auto Parts, Construction, Machinery, General Industrial uses
Specific Use Shafts, Gears, Fasteners, Pinions, Valves, Machinery Parts
Technique Hot Rolled
Finish Bright, Black, Rough
Tolerance H9-H13 or as required
Length Custom Lengths Available

Delivery Condition Annealed, Heat Treated or Customized
Shape Round
Supply Ability 100 Metric Ton/Month
MOQ As per client's requirement
Hardness 241-285 HBW
Surface Protection Oiled, Painted, or as per requirement
Packing Standard Export Packaging, Bundle with Strips
Heat Treatment Annealed, Quenched, Tempered

Product Description

The 18KhG (alternatively transliterated from Cyrillic 18 as 18KHG or 18HG) is a high-quality, chromium-manganese alloy structural steel specified under the Interstate standard GOST 4543.

It is engineered primarily as a case-hardening (carburizing) grade. With its balanced chromium and manganese contents, it offers strong core hardenability and high fatigue limits. It acts as the direct base version of the titanium-modified 18KhGT grade, providing high surface hardness alongside reliable core ductility after case treatment.

Chemical Composition (%)

The deliberate formulation of chromium ( $Cr$ ) and manganese ( $Mn$ ) enhances the steels depth of hardening during quenching.

Element	Minimum (%)	Maximum (%)
Carbon (C)	0.15	0.21
Chromium (Cr)	0.90	1.20
Manganese (Mn)	0.90	1.20
Silicon (Si)	0.17	0.37
Nickel (Ni)		0.30
Copper (Cu)		0.30
Phosphorus (P)		0.035
Sulfur (S)		0.035

International Equivalents

18KhG is functionally substituted by widely recognized European and American case-hardening alloy grades:

Germany / Europe (EN): 16MnCr5 (1.7131) or 20MnCr5 (1.7147)
USA (AISI/SAE): 5115 or 5120
China (GB): 15CrMn or 20CrMn
Japan (JIS): SMnC420 / SMnC420H
Poland (PN): 15HG / 16HG

Mechanical Properties (Typical Values)

The ultimate mechanical criteria depend heavily on workpiece diameter and the type of tempering utilized post-quench.

Hardened & Low-Temperature Tempered State (Typical for Case-Hardened Skins)

Tensile Strength ( $R_m$ ): $ge 880text{ MPa}$
Yield Strength ( $R_{e}$ ): $ge 735text{ MPa}$
Elongation ( $A_5$ ): $ge 10%$
Reduction of Area ( $Z$ ): $ge 40%$
Brinell Hardness (Annealed Supply State): $le 217text{ HB}$

Key Technical Features

Response to Carburization: Absorbs carbon efficiently along its outer boundary layers when exposed to a carbon-rich atmosphere, reaching a robust outer surface framework while the interior low-carbon core remains flexible.
Core Fatigue Strength: Highly resilient against intense torsional stresses and repeated shock, protecting high-vibration parts from sudden cleavage failures.
Machining Properties: Clean chip creation when processed in the conventional normalized or fully annealed condition, reducing tool wear before the component undergoes final case hardening.

Typical Applications

GOST 18KhG round bars and rod configurations are commonly used in machine construction, vehicle drive trains, and heavy manufacturing:

Power Transmission: Medium-load transmission gears, planet carrier components, splined input shafts, and synchronizer cones.
Friction Components: Bushings, high-wear pins, universal joint journals, and camshaft elements.
Fastener Tooling: Heavy-duty clamping studs, pins, and high-tensile connecting bolts exposed to cyclic physical loading.

Available Supply Forms

Finishes: Hot-rolled black bar, hot-forged blocks/bars, or centerless turned/ground bright rods.
Delivery Condition: Uniformly shipped in the annealed ( $+A$ ) or normalized ( $+N$ ) state to allow standard machining operations prior to final heat treating.

Versatile Alloy Steel for Demanding Applications

GOST 18KHG alloy steel bars and rods offer exceptional mechanical properties suitable for construction, engineering, automotive, and machinery industries. Their adaptability ensures reliable performance in making shafts, gears, fasteners, pinions, valves, and other critical machine parts.

Tailored Specifications for Maximum Flexibility

Clients can select from a range of diameters (16mm to 350mm), surface finishes, lengths, heat treatments, and tolerance options (H9-H13 or as required). Whether you need forged, rolled, or peeled processing, each order is customized to meet your exact specifications, maximizing performance and application efficiency.

Reliable Supply and Global Distribution

With a monthly supply ability of 100 metric tons, GOST 18KHG alloy steel bars are readily available for bulk orders. As a trusted manufacturer, exporter, fabricator, and supplier based in India, standard export packaging ensures safe and efficient delivery worldwide.

FAQ's of GOST 18KHG Alloy Steel Bar 18KHG Round Bars 18KHG Rods:

Q: How is the GOST 18KHG Alloy Steel Bar typically used across industries?

A: This alloy steel bar is commonly implemented in the production of shafts, gears, fasteners, pinions, valves, and a variety of machinery parts due to its high strength and durability, making it ideal for engineering, construction, automotive, and general industrial applications.

Q: What is the process for customizing 18KHG round bars according to client needs?

A: Clients can specify their required diameter, length, surface finish, heat treatment, tolerance, and processing method. The manufacturing team produces the bars using hot rolling, forging, or peeling, followed by tailoring the surface protection and packing as per the order requirements.

Q: When can clients expect delivery after placing an order for 18KHG alloy steel bars?

A: Delivery timelines depend on the order volume and customization details, with standard lead times determined during order confirmation. With a robust supply ability of 100 metric tons per month, most orders are processed and shipped efficiently to ensure timely delivery.

Q: Where are your GOST 18KHG alloy steel bars manufactured and shipped from?

A: Our alloy steel bars are manufactured and processed in India using advanced techniques, with global shipping capabilities and standard export packaging to ensure products reach clients in optimal condition.

Q: What protective measures are available for the surface of 18KHG steel rods?

A: Customers can choose between oiled, painted, or custom surface protections to enhance corrosion resistance and meet the specific environmental demands of their applications.

Q: What are the key benefits of choosing GOST 18KHG alloy steel rods?

A: The main advantages include robust mechanical strength, flexible design options, high-quality finishes, and adaptability to complex industrial uses, all engineered to GOST standards for reliability and performance.

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