PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods

PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods

Name: PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods
Brand: JAYANT IMPEX
Price: 125.0 INR
Availability: InStock

125.0 INR/Kilograms

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Product Details:

Length 3 to 6 meters (custom length available)
Tolerance H9, H11, as per requirement
Grade 18HGT
Processing Heat Treated, Annealed
Standard ASTM, DIN, JIS, EN, GB
Finish Bright, Black, Peeled, Polished
Diameter 20 mm to 400 mm (custom sizes available)
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PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods Price And Quantity

Minimum Order Quantity 1 Kilograms
Price 125.0 INR/Kilograms

PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods Product Specifications

Diameter 20 mm to 400 mm (custom sizes available)
Standard ASTM, DIN, JIS, EN, GB
Finish Bright, Black, Peeled, Polished
Processing Heat Treated, Annealed
Length 3 to 6 meters (custom length available)
Grade 18HGT
Tolerance H9, H11, as per requirement
Type Round Bar / Rod
Specific Use Shafts, Gears, Axles, Machinery Parts
Application Construction, Machinery, Engineering Components, Automotive
Material Alloy Steel
Technique Hot Rolled / Forged

Surface Condition Mill Finish
Delivery Condition Annealed / Hardened / Tempered
Hardness Customizable as per requirement
MOQ As per customer requirement
Packaging Standard Export Packing or as specified
Shape Round

Product Description

The 18HGT grade is a high-quality, chromium-manganese-titanium (Cr-Mn-Ti) alloy steel specified primarily under the Polish standard PN-H-84030 (and heavily mirroring the Soviet/GOST standard system).

It is specifically engineered as a carburizing (case-hardening) steel. The targeted addition of titanium ( $Ti$ ) acts as a grain-refining agent, ensuring that the steel retains an exceptionally fine microstructure even during long exposure to high carburizing temperatures. This translates to an incredibly hard, wear-resistant outer shell over a tough, shock-absorbing core.

Chemical Composition (%)

The precise synchronization of chromium and manganese boosts the core strength and hardenability, while titanium prevents grain growth.

Element	Minimum (%)	Maximum (%)
Carbon (C)	0.15	0.21
Chromium (Cr)	1.00	1.30
Manganese (Mn)	0.80	1.10
Titanium (Ti)	0.03	0.09
Silicon (Si)	0.17	0.37
Nickel (Ni)		0.30
Copper (Cu)		0.30
Phosphorus (P)		0.035
Sulfur (S)		0.035

International Equivalents

18HGT belongs to a specialized class of Eastern European case-hardening alloys, aligning closely with the following standards:

Russia / CIS (GOST): 18KhGT / 18 (Direct equivalent)
China (GB): 20CrMnTi (Very close match, slightly higher carbon allowance)
Germany / Europe (DIN EN): 20MnCr5 / 1.7147 or 16MnCr5 (Functional substitutes, though they lack the dedicated Titanium grain refinement)
USA (AISI/SAE): 5120 or 4118 (Approximate functional alternatives for case-hardening applications)

Mechanical Properties (Typical Heat-Treated State)

After undergoing standard heat treatmentconsisting of carburizing, quenching, and low-temperature tempering18HGT exhibits high core strength alongside its hardened surface.

Tensile Strength ( $R_m$ ): $ge 1180text{ MPa}$
Yield Strength ( $R_e$ ): $ge 830text{ MPa}$
Elongation ( $A_5$ ): $ge 10%$
Reduction of Area ( $Z$ ): $ge 40%$
Impact Energy ( $KV$ ): $ge 49text{ J}$
Typical Surface Hardness (Post-Carburization): $58 - 62text{ HRC}$

Key Technical Features

Grain Growth Resistance: The micro-alloyed titanium forms stable titanium carbides that pin grain boundaries, preventing embrittlement during prolonged high-temperature carburizing cycles.
Superb Core Toughness: Even when the exterior is hardened to resist severe abrasion, the core remains highly ductile to absorb sudden dynamic impacts and torsional shocks.
Good Machinability: In its annealed or normalized delivery state, 18HGT machines cleanly, making it ideal for high-speed gear cutting and spline broaching.

Typical Applications

18HGT round bars and rods are heavily favored in heavy machinery, automotive transmissions, and powertrain manufacturing:

Gears & Pinions: High-load transmission gears, bevel gears, spur gears, and starter ring gears.
Splined Shafts & Axles: Heavy-duty drive shafts, input shafts, and gearbox countershafts subjected to high torque.
Pistons & Bushings: Kingpins, piston pins, universal joint journals, and cam tracks requiring a highly wear-resistant armor skin.

Available Supply Forms

Finishes: Hot-rolled, forged black bars, turned, or centerless ground bright rods.
Delivery Condition: Most frequently supplied in the annealed ( $+A$ ) or normalized ( $+N$ ) state to allow end-users to perform final machining before case hardening.

Versatile Alloy Steel Round Bars for Custom Applications

18HGT Alloy Steel Bars are designed to cater to a wide array of industries, with customizable options in hardness, length, and diameter. Whether it's for robust construction projects or intricate machinery components, these bars offer superior mechanical properties and reliability. The availability in different delivery and surface conditions further enhances their applicability and suitability for specialized engineering and automotive uses.

Rigorous Standards & Exceptional Processing Techniques

Manufactured using advanced hot rolling or forging processes, the 18HGT bars adhere to strict international standards-ASTM, DIN, JIS, EN, and GB-guaranteeing consistent quality. Processing options such as heat treatment, annealing, and tempering are available to meet precise mechanical requirements. Multiple surface finishes, including bright, black, peeled, and polished, cater to diverse application needs and aesthetic preferences.

FAQ's of PN 18HGT Alloy Steel Bar 18HGT Round Bars 18HGT Rods:

Q: How can the hardness of the 18HGT Alloy Steel Bars be customized for my application?

A: The hardness of 18HGT Alloy Steel Bars can be tailored during the manufacturing process by selecting specific heat treatment methods such as annealing, hardening, or tempering. You can specify your required hardness value or application, and the supplier will process the material accordingly to meet those exact needs.

Q: What is the typical process used to manufacture 18HGT Round Bars and Rods?

A: These bars and rods are produced through hot rolling or forging, followed by heat treatment processes like annealing, hardening, or tempering. This ensures consistent mechanical properties and allows for customizable finishes, such as bright, black, peeled, or polished, according to customer requirements.

Q: When are 18HGT Alloy Steel Bars commonly used in the industry?

A: 18HGT Alloy Steel Bars are widely utilized in the manufacture of machinery parts, shafts, gears, axles, and various structural components due to their durability and adaptability. They are integral in engineering, automotive, and construction projects, especially where high strength and precision are essential.

Q: Where can I specify the size, finish, and packaging of my 18HGT Alloy Steel order?

A: When placing an order, customers can communicate their specific requirements for size (diameter and length), finish (e.g., bright, black, polished), and packaging. Suppliers in India typically offer standard export packing but will accommodate special packing requests as specified.

Q: What benefits does the 18HGT Alloy Steel Bar offer over other materials?

A: The primary advantages of the 18HGT Alloy Steel Bar include high strength, exceptional machinability, and versatility. Customizable hardness, a variety of available finishes, and conformity to international standards make it a preferred choice for demanding engineering and automotive applications.

Q: How are the 18HGT Rods delivered to ensure quality and safety?

A: 18HGT Rods are packed using standard export packing to safeguard against damage during transit. For special needs, customized packaging solutions are available, ensuring the bars reach your site in optimal condition, regardless of shipment size or destination.

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