JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods

JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods

Name: JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods
Brand: JAYANT IMPEX
Price: 275.0 INR
Availability: InStock

275.0 INR/Kilograms

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Product Details:

Type Round Bar / Rod
Diameter 12mm to 600mm (or custom sizes)
Length Custom Cut Lengths / Standard Lengths
Tolerance h9, h10, or as per requirement
Grade SNCM220
Application Automotive components, gears, shafts, bearings
Specific Use Manufacturing of high-strength, wear-resistant parts
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JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods Price And Quantity

Price 275.0 INR/Kilograms
Minimum Order Quantity 1 Kilograms

JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods Product Specifications

Type Round Bar / Rod
Diameter 12mm to 600mm (or custom sizes)
Tolerance h9, h10, or as per requirement
Grade SNCM220
Length Custom Cut Lengths / Standard Lengths
Technique Hot Rolled / Forged
Application Automotive components, gears, shafts, bearings
Specific Use Manufacturing of high-strength, wear-resistant parts
Finish Peeled / Polished
Standard JIS
Processing Heat Treated, Annealed, Normalized
Material Alloy Steel (SNCM220)

Ultimate Tensile Strength 780 MPa (typical, before further processing)
Supply Condition Annealed / Quenched & Tempered
Hardness Approx. 180 - 229 HBW (as rolled); can be adjusted by heat treatment
End Condition Cut, Sawed, or as specified
Yield Strength Approx. 590 MPa (can vary with heat treatment)
Surface Condition Bright / Black / Peeled
Shape Round

Product Description

JIS SNCM220 is a premium Nickel-Chromium-Molybdenum (triple-alloy) case-hardening (carburizing) steel grade defined under the Japanese Industrial Standards (JIS G4053).

Supplied as hot-rolled, cold-drawn, or turned round bars and rods, SNCM220 is highly valued in heavy engineering. The combination of nickel, chromium, and molybdenum gives it significantly deeper core hardenability and impact toughness than simpler chromium-manganese steels (like 16MnCr5 or AISI 5115), making it the gold standard for heavy-duty power transmission components.

Technical Specifications & Global Equivalents

SNCM220 is the direct Japanese equivalent to the globally ubiquitous AISI 8620. If you are cross-referencing materials for international manufacturing, use this table:

Standard	Designation / Grade
JIS (Japan)	SNCM220 / SNCM220H (H-band version for controlled hardenability)
AISI / SAE (USA)	8620 / UNS G86200
European (EN / DIN / WNr)	21NiCrMo2 / 20NiCrMo2-2 / 1.6523
British Standard (BS 970)	805M20 / EN206
GB (China)	20CrNiMo

Chemical Composition (JIS G4053)

The strategic "triple-alloy" blend leverages three elements to optimize performance: Nickel for extreme core toughness and low-temperature impact resistance, Chromium for depth of hardness, and Molybdenum to inhibit grain growth during long carburizing cycles.

Carbon (C): 0.17% 0.23%
Nickel (Ni): 0.40% 0.70%
Chromium (Cr): 0.40% 0.65%
Molybdenum (Mo): 0.15% 0.25%
Manganese (Mn): 0.60% 0.90%
Silicon (Si): 0.15% 0.35%
Phosphorus (P): max. 0.030%
Sulfur (S): max. 0.030%

Mechanical Properties & Processing characteristics

Core Toughness: Unlike simpler alloy steels that can become brittle in heavier section sizes, SNCM220 maintains an exceptionally tough core (tensile strength typically 8501150 MPa after heat treatment) even in ruling sections up to 2.5 inches / 63 mm.
Case Hardness: After gas carburizing, quenching (typically oil), and low-temperature tempering, the surface achieves a high wear-resistant hardness of 58 to 63 HRC.
Machinability: Usually supplied in the Annealed condition (max. 217 HBW) or Normalized state. It cuts cleanly with excellent surface finishes, which is crucial for high-speed gear cutting and splining operations.

Typical Engineering Applications

Because SNCM220 round bars absorb high cyclic shocks while resisting aggressive surface wear, they are widely used for:

Heavy-Duty Drivetrains: Automotive and industrial high-load gears, pinions, splined shafts, bevel gears, and differential spiders.
Oil & Gas / Mining: High-stress drilling bit shanks, drive collars, and heavy-duty universal joints.
Fasteners & Friction Parts: Heavy-duty gudgeon pins, piston pins, crankshaft pins, and specialized high-tensile clamping components.

Precision Performance and Versatile Applications

JIS SNCM220 Alloy Steel Bars are engineered for use in critical components requiring superior wear resistance and strength. With customizable dimensions and finishes, they are ideal for gears, shafts, bearings, and automotive parts. Our strict adherence to JIS standards ensures reliability and consistent quality, making these bars suitable for various industrial applications.

Custom Processing and Supply Options

Choose from round bars or rods with bright, black, or peeled finishes, and end conditions such as cut or sawed as per your specifications. Whether you require standard or custom lengths, our production capabilities and supply network across India guarantee prompt and tailored delivery to meet your unique manufacturing requirements.

FAQ's of JIS SNCM220 Alloy Steel Bar SNCM220 Round Bars SNCM220 Rods:

Q: How can the hardness and strength of SNCM220 alloy steel bars be adjusted?

A: The hardness (approx. 180-229 HBW as rolled) and mechanical properties of SNCM220 round bars can be modified by heat treatment processes, such as annealing, quenching, or tempering, to meet specific application needs. This flexibility allows manufacturers to achieve the desired hardness and yield strength for various uses.

Q: What are the main applications of SNCM220 alloy steel rods and bars?

A: SNCM220 steel bars and rods are extensively used in the manufacturing of automotive components, gears, shafts, and bearings. Their high strength and wear resistance make them a preferred choice for parts exposed to significant mechanical stress and demanding environments.

Q: When should I select a particular surface condition or finish for SNCM220 bars?

A: The choice of surface finish-such as bright, black, peeled, or polished-depends on the intended application and aesthetic or technical requirements. Peeled and polished finishes are often chosen for precision assemblies or where enhanced surface quality is needed, while black or bright finishes suit standard industrial uses.

Q: Where are JIS SNCM220 round bars and rods typically supplied from in India?

A: SNCM220 alloy steel bars are manufactured and distributed by a wide network of dealers, exporters, manufacturers, and fabricators throughout India. Major industrial hubs and specialized steel producers supply these products to both domestic and international markets.

Q: What is the typical process for producing SNCM220 steel bars?

A: Production of SNCM220 bars typically involves hot rolling or forging, followed by heat treatment processes like annealing, quenching, or tempering. Surface finishing (peeling, polishing) and cutting or sawing to length are carried out to meet client specifications and tolerance requirements.

Q: How does SNCM220 steel benefit high-strength component manufacturing?

A: SNCM220 alloy steel offers a robust combination of strength, toughness, and wear resistance, thanks to its balanced chemical composition and adaptable heat treatment options. These benefits translate into longer service life and reliable performance in high-stress mechanical components.

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