Product Description
quivalences Standard de la Nuance BS 2S98
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Royaume-Uni (Commercial / BS 970) : 826M40 / Spcification historique EN26
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Allemagne (WNr) : 1.6745 (Alliage de type 40NiMoCr10-5)
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Type d'alliage : Acier 2,5 % de Nickel - Chrome - Molybdne haute teneur en carbone.
Composition Chimique Principale (Poids %)
Les proprits mcaniques suprieures du 2S98 proviennent d'une chimie rigoureusement contrle afin de minimiser les impurets :
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Carbone (C) : 0,36 0,44 % (Permet d'atteindre une duret et une rsistance de cur leves)
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Nickel (Ni) : 2,30 2,80 % (Confre une tnacit et une rsistance aux chocs exceptionnelles)
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Chrome (Cr) : 0,50 0,80 % (Augmente la pntration de la trempe et la rsistance l'usure)
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Molybdne (Mo) : 0,45 0,65 % (Empche la fragilit au revenu et maintient la tenue au fluage chaud)
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Manganse (Mn) : 0,45 0,70 %
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Phosphore et Soufre (P / S) : Max 0,025 % (P) / Max 0,020 % (S) (Limites strictes pour l'intgrit arospatiale)
Proprits Mcaniques (Condition standard Traite Hardened & Tempered : 2S98D)
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Rsistance la traction ($R_m$) : 1160 1310 MPa (quivalent 7585 tons/sq in)
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Limite d'lasticit ($R_{p0.2}$) : Min 1000 MPa (65 tons/sq in)
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Allongement (A %) : Min 10 %
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Duret Brinell : 341 388 HBW (Duret Vickers associe : ~360410 HV)
Conditions de Livraison et Formats Communs
Les barres rondes (Round Bars) et tiges (Rods) en alliage 2S98 sont gnralement dsignes par des suffixes de lettres indiquant leur tat thermique et leur tat de surface :
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2S98A : Demi-produits ou billets destins au forgeage, livrs l'tat adouci (softened).
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2S98B : Barres noires (brutes de laminage/forgeage) pour usinage, livres aprs traitement thermique final.
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2S98C : Pices forges, ayant subi le traitement thermique final.
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2S98D : Barres rectifies ou tires (Bright Bars), livres traites thermiquement (Hardened & Tempered) prtes pour l'usinage de haute prcision.
Applications Courantes
Grce sa rsistance au fluage et sa robustesse structurelle, le BS 2S98 est principalement utilis dans l'aronautique, les sports de comptition (Motorsport) et le secteur Oil & Gas pour la fabrication de :
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Arbres hydrauliques et broches de prcision
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Barres de torsion et essieux forte contrainte
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Bielles de moteurs haute performance
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Sockets et fixations de scurit de classe arospatiale
Versatile Engineering SolutionsBS 2S98 alloy steel bars offer exceptional versatility, making them ideal for a wide array of applications such as engineering components, shafts, fasteners, and structural frameworks. Their customizable lengths, finishes, and tolerance levels ensure an exact fit for every demanding project, from aerospace to construction.
Superior Strength and Heat TreatmentThese bars deliver high mechanical performance, with yield and tensile strengths varying according to heat treatment processes such as annealing and quenching & tempering. Their adaptability to different manufacturing needs provides engineers and designers with the flexibility to achieve optimal balance between strength and ductility.
Reliable Sourcing and PackagingSourced and manufactured in India, BS 2S98 alloy steel bars are available through reputable dealers, exporters, manufacturers, and suppliers. Secure export-standard packaging, custom bundling, and cut-to-size services ensure product protection and easy handling during transportation and delivery worldwide.
FAQ's of BS 2S98 Alloy Steel Bar 2S98 Round Bars 2S98 Rods:
Q: How is the hardness of BS 2S98 alloy steel bars determined?
A: The hardness of BS 2S98 round bars and rods is primarily influenced by their heat treatment process, typically ranging from 207 to 235 HB. Specific treatments like annealing or quenching and tempering can further refine their hardness to meet application requirements.
Q: What benefits do BS 2S98 alloy steel bars provide in engineering and structural applications?
A: These bars offer high yield and tensile strength, excellent machinability, and a moderate level of corrosion resistance. Such characteristics make them highly suitable for demanding uses in engineering, construction, aerospace, and automotive industries, ensuring reliability and safety in structural components.
Q: When should BS 2S98 round bars be selected over other steel grades?
A: BS 2S98 round bars are a preferred choice when high strength, precise tolerances, and specific mechanical properties (such as those required for fasteners, shafts, and load-bearing parts) are needed. Their performance under various heat treatments makes them suitable for critical engineering uses.
Q: Where are BS 2S98 alloy steel bars typically manufactured and supplied from?
A: These alloy steel bars are predominantly manufactured and supplied from India, with reputable dealers, exporters, fabricators, and suppliers providing global availability and customized solutions to meet project-specific demands.
Q: What are the standard sizes and tolerances available for BS 2S98 rods?
A: BS 2S98 rods are available in diameters ranging from 8mm up to 200mm, with custom sizes possible upon request. Tolerances can be supplied as H9, H11, H13, or tailored to specific project requirements, ensuring high precision and quality.
Q: How are BS 2S98 alloy steel bars processed and finished?
A: The processing options include hot rolled or forged techniques, with finishing choices such as polished, turned, bright, black, or peeled. Additionally, bars can be cut to size, heat treated, and further machined to suit individual specifications.
Q: What packaging and delivery options are available for these steel bars?
A: BS 2S98 alloy steel bars are packed using standard export packaging or bundled as per client requests. Products are securely prepared for transportation to ensure they arrive in excellent condition, no matter the destination.