CSN 14220 Alloy Steel Bar 14220 Round Bars 14220 Rods

Product Description

ÄŒSN 14 220 is a prominent Czech standard (ÄŒSN) structural alloy steel primarily utilized for case-hardening (carburizing). It is highly valued for engineering components that demand a exceptionally hard, wear-resistant surface profile combined with a tough, impact-resistant core.

Global Cross-Reference & Equivalents

When sourcing ÄŒSN 14 220 round bars or rods internationally, you will find it most frequently cross-referenced under the European standard 16MnCr5:

Chemical Composition (Typical wt.%)

The alloy chemistry relies heavily on a precise manganese-chromium balance to boost hardenability and core strength during case hardening.

• Carbon (C): 0.14% – 0.19%

• Manganese (Mn): 1.10% – 1.40%

• Chromium (Cr): 0.80% – 1.10%

• Silicon (Si): 0.17% – 0.37%

• Phosphorus (P): $\le$ 0.035%

• Sulfur (S): $\le$ 0.035%

Technical Specifications & Supply Conditions

ÄŒSN 14 220 round bars and rods are typically supplied in the following profiles:

1. Delivery States

• Annealed (+A): Soft-annealed for optimum machinability (typically $\le$ 207 HBW).

• Normalized (+N): Grain-refined structure to prepare for subsequent forging or machining.

• Treated for Machinability (+TH / +FP): Optimized microstructure for high-speed cutting.

2. Standard Mechanical Properties (Core Properties post Heat-Treatment)

• Tensile Strength ($R_m$): 780 – 1100 MPa (depending on cross-section diameter)

• Yield Strength ($R_{e}$): $\ge$ 440 MPa

• Elongation ($A_5$): $\ge$ 9% – 10%

• Impact Energy ($KV$): $\ge$ 32 J

Typical Applications

Because it responds exceptionally well to gas, powder, or salt-bath carburizing (at process temperatures around 900°C – 930°C), this material is standard for high-fatigue, high-load machinery components up to roughly 35 mm in critical cross-section:

• Power Transmission: Small-to-medium spur gears, bevel gears, pinion shafts, and spline shafts.

• Automotive & Engine Components: Camshafts, piston pins, valve lifters, and universal joint journals.

• Tooling & Workholding: Clamping jaws, heavy-duty guide bushes, jaw clutches, and positioning pins.