18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars

18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars

Name: 18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars
Brand: JAYANT IMPEX
Price: 150.0 INR
Availability: InStock

150.0 INR/Kilograms

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Product Details:

Processing Cutting, machining, grinding available
Material 18NiCrMo14-6 (EN 1.3533, AISI 3316, 20Ch2N4A)
Diameter 10 mm to 300 mm or customized
Length Random/Fix Lengths (3m to 6m and cut to size as required)
Technique Hot Rolled / Cold Drawn / Peeled
Grade 18NiCrMo14-6
Finish Bright/Smooth
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18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars Price And Quantity

Price 150.0 INR/Kilograms
Minimum Order Quantity 1 Kilograms

18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars Product Specifications

Application Automotive components, gears, shafts, high-stress parts, and engineering industries
Tolerance h9, h11, as per requirement
Type Round Bar
Grade 18NiCrMo14-6
Technique Hot Rolled / Cold Drawn / Peeled
Finish Bright/Smooth
Specific Use Case hardening steel for high strength engineering components
Standard B31 EN 1-3533, AISI 3316, 20Ch2N4A
Length Random/Fix Lengths (3m to 6m and cut to size as required)
Processing Cutting, machining, grinding available
Material 18NiCrMo14-6 (EN 1.3533, AISI 3316, 20Ch2N4A)
Diameter 10 mm to 300 mm or customized

Corrosion Resistance Medium (requires protection for harsh environments)
Density ~7.85 g/cm3
Elongation >12% (after treatment)
Heat Treatment Annealed, Hardened & Tempered, Case Hardening possible
Shape Round
Hardness 167 - 217 HB (Annealed)
Delivery Condition Annealed, Peeled, Turned, Polished, as rolled
Yield Strength ~600 MPa (after treatment)
Ultimate Tensile Strength 850 - 1100 MPa (after treatment)
Surface Condition Black, Peeled, Polished, Rough Turned

Product Description

The material string you provided references a ultra-high-performance Nickel-Chromium-Molybdenum (Ni-Cr-Mo) case-hardening steel. Packed with an unusually high nickel content (roughly $3.25% - 3.75%$ ), this specific alloy family is engineered for massive component cross-sections that must survive extreme dynamic stresses, shock loading, and fatigue.

Here is how your specific designations map across international material tracking systems to the same core material profile:

The Global Designation Matrix

Euronorm (EN): 18NiCrMo14-6
German Material Number: W.Nr. 1.3533 (specifically treated as a premium bearing quality grade)
USA Standard: AISI 3316 / SAE 3316 (frequently designated as AISI E3316 for electric-arc furnace melting)
Russian Standard (GOST): 20Ch2N4A (2024 / 20Kh2N4A)
Chinese Standard (GB): 20Cr2Ni4A
Internal Mill Designation: B31 (often used by regional European alloy mills)

Chemical Composition (Typical %)

The high combination of Nickel ( $text{Ni}$ ) and Chromium ( $text{Cr}$ ) provides incredible through-hardening depth, ensuring that even thick, heavy-diameter bars achieve uniform hardness down to their core.

Carbon (C)	Nickel (Ni)	Chromium (Cr)	Molybdenum (Mo)	Manganese (Mn)	Silicon (Si)
0.15% 0.22%	3.25% 3.75%	1.25% 1.65%	0.15% 0.25%	0.30% 0.60%	0.15% 0.40%

Mechanical Performance (Post Heat-Treatment Core Properties)

Because this is primarily a case-hardening steel, the raw core of the bar beneath the carburized "skin" retains massive tensile limits and high fracture toughness:

Tensile Strength ( $R_m$ ): $ge 1100 - 1270 text{ MPa}$
Yield Strength ( $R_e$ ): $ge 850 - 1080 text{ MPa}$
Elongation ( $A_5$ ): $ge 9% - 11%$
Impact Toughness (Charpy-V): $ge 60text{ J}$
Post-Carburization Surface Hardness: $58 - 62text{ HRC}$
Soft Annealed Delivery State: $le 255 - 269text{ HBW}$ (for pre-machining)

Critical Engineering Characteristics

Deep Hardenability: Thanks to the $3.5%$ nominal Nickel addition, large-diameter round bars do not experience the "soft center" phenomenon typical of lower-alloy steels. The core transforms reliably into high-strength tempered martensite.
Isotropic and Ultra-Clean Profiles: Under designations like 1.3533, this grade is frequently processed via vacuum degassing or ladle refining to satisfy bearing-grade cleanliness metrics, drastically lowering micro-inclusions and maximizing multi-axial fatigue limits.
Non-Weldable Warning: Due to the combination of high nickel/chrome levels and high hardenability, components made from this grade are not considered weldable. Attempting to weld them induces intense localized brittleness and cracking risks.

Typical Applications

These premium round bars are explicitly sourced for critical industrial components subjected to relentless, high-impact fatigue cycles:

Aerospace & Defense: High-stress aircraft engine gears, structural planetary shafts, and heavy-duty actuator arms.
Heavy Powertrains: Massive transmission sprockets, earthmover final drives, marine propeller shafts, and heavy-duty piston pins.
Industrial Fastening: High-tensile, heavy-duty structural screws and clamping bars operating under extreme dynamic strain.

Exceptional Mechanical Properties

18NiCrMo14-6 round bars deliver high tensile and yield strengths post heat treatment, ensuring reliable performance in automotive and engineering sectors. Their case hardening capability and medium corrosion resistance make them suitable for components that require wear resistance and durable service life.

Versatile Finishes and Delivery Conditions

These bars are available in varied surface conditions including black, peeled, polished, and rough turned finishes. Delivery conditions such as annealed or hardened and tempered accommodate diverse fabrication and performance needs, streamlining the manufacturing process for industry professionals.

Precise Sizing and Applications

Available in diameters from 10 mm to 300 mm and cut-to-size lengths, these round bars can be tailored to fit specific project requirements. They cater especially well to automotive parts, gears, shafts, and high-stress mechanical applications, meeting standards like B31 EN 1-3533, AISI 3316, and 20Ch2N4A.

FAQ's of 18NiCrMo14-6 - Round Bar B31 EN 1-3533 AISI 3316 20Ch2N4A Bars:

Q: How are 18NiCrMo14-6 round bars typically processed for use in engineering applications?

A: These bars can be processed through cutting, machining, and grinding. Further heat treatment, such as case hardening, enhances surface wear resistance and mechanical strength, making them ideal for gears, shafts, and other high-stress engineering parts.

Q: What are the primary benefits of using 18NiCrMo14-6 round bars in manufacturing?

A: The primary benefits include exceptional strength, toughness, and the ability to withstand wear and tear after case hardening. Their versatility in size, finish, and delivery condition makes them suitable for a broad range of engineering and automotive applications.

Q: When should case hardening be applied to these steel bars?

A: Case hardening is recommended when a combination of a tough core and a hard, wear-resistant surface is required, such as for gears and shafts exposed to high friction or impact during service.

Q: Where can these round bars be sourced, and in what sizes are they available?

A: 18NiCrMo14-6 round bars can be sourced through manufacturers, dealers, exporters, and suppliers in India. They are available in diameters ranging from 10 mm to 300 mm and in random or custom lengths between 3 to 6 meters, or cut to required sizes.

Q: What specific usage environments require additional corrosion protection for these bars?

A: While these bars have medium corrosion resistance, they require protective coatings or treatments when used in harsh, corrosive, or outdoor environments to ensure longevity and optimal performance.

Q: How does the material tolerance affect machining and final product quality?

A: Material tolerances like h9 or h11 ensure accurate sizing, facilitating precise machining and consistent outcomes in the final product, crucial for parts where tight fit and mechanical reliability are necessary.

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